15269e87e5
When rendering large operators (e.g., sum, integral) with scripts in text
mode, the operator glyph was incorrectly positioned after its subscripts
and superscripts instead of before them. This caused expressions like
\sum_{i=1}^{n} i = \frac{n(n+1)}{2} to render with the equals sign
appearing visually misplaced.
Root cause:
The line-breaking refactoring introduced double-positioning of large
operators. makeLargeOp() internally sets the operator position, advances
currentPosition.x, and adds script displays. However, the calling code
then overwrote the position and advanced currentPosition.x again, causing:
- Double-advancement leading to incorrect width calculations
- Scripts positioned before the operator instead of after
Solution:
Save and restore typesetter state before/after line break dimension checks,
then call makeLargeOp() once at the correct position after handling line
breaks and inter-element spacing.
2609 lines
120 KiB
Swift
Executable File
2609 lines
120 KiB
Swift
Executable File
import XCTest
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@testable import SwiftMath
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//
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// MathTypesetterTests.swift
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// MathTypesetterTests
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//
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// Created by Mike Griebling on 2023-01-02.
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//
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extension CGPoint {
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func isEqual(to p:CGPoint, accuracy:CGFloat) -> Bool {
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abs(self.x - p.x) < accuracy && abs(self.y - p.y) < accuracy
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}
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}
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final class MTTypesetterTests: XCTestCase {
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var font:MTFont!
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override func setUpWithError() throws {
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// Put setup code here. This method is called before the invocation of each test method in the class.
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try super.setUpWithError()
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self.font = MTFontManager.fontManager.defaultFont
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}
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override func tearDownWithError() throws {
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// Put teardown code here. This method is called after the invocation of each test method in the class.
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try super.tearDownWithError()
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}
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func testSimpleVariable() throws {
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let mathList = MTMathList()
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mathList.add(MTMathAtomFactory.atom(forCharacter: "x"))
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display.hasScript);
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 1);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay)
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 1);
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// The x is italicized
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XCTAssertEqual(line.attributedString?.string, "𝑥");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 1)));
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XCTAssertFalse(line.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, line.ascent);
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XCTAssertEqual(display.descent, line.descent);
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XCTAssertEqual(display.width, line.width);
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XCTAssertEqual(display.ascent, 8.834, accuracy: 0.01)
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XCTAssertEqual(display.descent, 0.22, accuracy: 0.01)
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XCTAssertEqual(display.width, 11.44, accuracy: 0.01)
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}
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func testMultipleVariables() throws {
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let mathList = MTMathAtomFactory.mathListForCharacters("xyzw")
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 4)), "Got \(display.range) instead")
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XCTAssertFalse(display.hasScript);
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 1);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay);
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 4);
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XCTAssertEqual(line.attributedString?.string, "𝑥𝑦𝑧𝑤");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 4)));
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XCTAssertFalse(line.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, line.ascent);
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XCTAssertEqual(display.descent, line.descent);
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XCTAssertEqual(display.width, line.width);
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XCTAssertEqual(display.ascent, 8.834, accuracy: 0.01)
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XCTAssertEqual(display.descent, 4.10, accuracy: 0.01)
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XCTAssertEqual(display.width, 44.86, accuracy: 0.01)
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}
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func testVariablesAndNumbers() throws {
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let mathList = MTMathAtomFactory.mathListForCharacters("xy2w")
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular)
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero))
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 4)), "Got \(display.range) instead")
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XCTAssertFalse(display.hasScript)
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 1);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay);
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 4);
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XCTAssertEqual(line.attributedString?.string, "𝑥𝑦2𝑤");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 4)));
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XCTAssertFalse(line.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, line.ascent);
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XCTAssertEqual(display.descent, line.descent);
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XCTAssertEqual(display.width, line.width);
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XCTAssertEqual(display.ascent, 13.32, accuracy: 0.01)
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XCTAssertEqual(display.descent, 4.10, accuracy: 0.01)
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XCTAssertEqual(display.width, 45.56, accuracy: 0.01)
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}
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func testEquationWithOperatorsAndRelations() throws {
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let mathList = MTMathAtomFactory.mathListForCharacters("2x+3=y")
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 6)), "Got \(display.range) instead")
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XCTAssertFalse(display.hasScript);
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 1);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay);
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 6);
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XCTAssertEqual(line.attributedString?.string, "2𝑥+3=𝑦");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 6)));
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XCTAssertFalse(line.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, line.ascent);
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XCTAssertEqual(display.descent, line.descent);
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XCTAssertEqual(display.width, line.width);
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XCTAssertEqual(display.ascent, 13.32, accuracy: 0.01)
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XCTAssertEqual(display.descent, 4.10, accuracy: 0.01)
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XCTAssertEqual(display.width, 92.36, accuracy: 0.01)
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}
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// #define XCTAssertTrue(CGPointEqualToPoint(p1, p2, accuracy, ...) \
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// XCTAssertEqual(p1.x, p2.x, accuracy, __VA_ARGS__); \
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// XCTAssertEqual(p1.y, p2.y, accuracy, __VA_ARGS__)
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//
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//
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// #define XCTAssertTrue(NSEqualRanges(r1, r2, ...) \
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// XCTAssertEqual(r1.location, r2.location, __VA_ARGS__); \
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// XCTAssertEqual(r1.length, r2.length, __VA_ARGS__)
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func testSuperscript() throws {
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let mathList = MTMathList()
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let x = MTMathAtomFactory.atom(forCharacter: "x")
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let supersc = MTMathList()
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supersc.add(MTMathAtomFactory.atom(forCharacter: "2"))
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x?.superScript = supersc;
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mathList.add(x)
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display.hasScript);
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 2);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay);
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 1);
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// The x is italicized
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XCTAssertEqual(line.attributedString?.string, "𝑥");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(line.hasScript);
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let sub1 = display.subDisplays[1];
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XCTAssertTrue(sub1 is MTMathListDisplay)
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let display2 = sub1 as! MTMathListDisplay
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XCTAssertEqual(display2.type, .superscript)
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XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointMake(11.44, 7.26)))
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XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display2.hasScript);
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XCTAssertEqual(display2.index, 0);
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XCTAssertEqual(display2.subDisplays.count, 1);
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let sub1sub0 = display2.subDisplays[0];
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XCTAssertTrue(sub1sub0 is MTCTLineDisplay);
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let line2 = sub1sub0 as! MTCTLineDisplay
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XCTAssertEqual(line2.atoms.count, 1);
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XCTAssertEqual(line2.attributedString?.string, "2");
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XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
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XCTAssertFalse(line2.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, 16.584, accuracy: 0.01)
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XCTAssertEqual(display.descent, 0.22, accuracy: 0.01)
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XCTAssertEqual(display.width, 18.44, accuracy: 0.01)
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}
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func testSubscript() throws {
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let mathList = MTMathList()
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let x = MTMathAtomFactory.atom(forCharacter: "x")
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let subsc = MTMathList()
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subsc.add(MTMathAtomFactory.atom(forCharacter: "1"))
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x?.subScript = subsc
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mathList.add(x)
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display.hasScript);
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 2);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay);
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 1);
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// The x is italicized
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XCTAssertEqual(line.attributedString?.string, "𝑥");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(line.hasScript);
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let sub1 = display.subDisplays[1];
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XCTAssertTrue(sub1 is MTMathListDisplay);
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let display2 = sub1 as! MTMathListDisplay
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XCTAssertEqual(display2.type, .ssubscript);
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XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointMake(11.44, -4.94)))
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XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)))
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XCTAssertFalse(display2.hasScript);
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XCTAssertEqual(display2.index, 0);
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XCTAssertEqual(display2.subDisplays.count, 1);
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let sub1sub0 = display2.subDisplays[0];
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XCTAssertTrue(sub1sub0 is MTCTLineDisplay);
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let line2 = sub1sub0 as! MTCTLineDisplay
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XCTAssertEqual(line2.atoms.count, 1);
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XCTAssertEqual(line2.attributedString?.string, "1");
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XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
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XCTAssertFalse(line2.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, 8.834, accuracy: 0.01)
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XCTAssertEqual(display.descent, 4.940, accuracy: 0.01)
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XCTAssertEqual(display.width, 18.44, accuracy: 0.01)
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}
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func testSupersubscript() throws {
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let mathList = MTMathList()
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let x = MTMathAtomFactory.atom(forCharacter: "x")
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let supersc = MTMathList()
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supersc.add(MTMathAtomFactory.atom(forCharacter: "2"))
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let subsc = MTMathList()
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subsc.add(MTMathAtomFactory.atom(forCharacter: "1"))
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x?.subScript = subsc;
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x?.superScript = supersc;
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mathList.add(x)
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display.hasScript);
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XCTAssertEqual(display.index, NSNotFound);
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XCTAssertEqual(display.subDisplays.count, 3);
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTCTLineDisplay);
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let line = sub0 as! MTCTLineDisplay
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XCTAssertEqual(line.atoms.count, 1);
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// The x is italicized
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XCTAssertEqual(line.attributedString?.string, "𝑥");
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XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
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XCTAssertTrue(line.hasScript);
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let sub1 = display.subDisplays[1];
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XCTAssertTrue(sub1 is MTMathListDisplay);
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let display2 = sub1 as! MTMathListDisplay
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XCTAssertEqual(display2.type, .superscript);
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XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointMake(11.44, 7.26)))
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XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display2.hasScript);
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XCTAssertEqual(display2.index, 0);
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XCTAssertEqual(display2.subDisplays.count, 1);
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let sub1sub0 = display2.subDisplays[0];
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XCTAssertTrue(sub1sub0 is MTCTLineDisplay);
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let line2 = sub1sub0 as! MTCTLineDisplay
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XCTAssertEqual(line2.atoms.count, 1);
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XCTAssertEqual(line2.attributedString?.string, "2");
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XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
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XCTAssertFalse(line2.hasScript);
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let sub2 = display.subDisplays[2];
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XCTAssertTrue(sub2 is MTMathListDisplay);
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let display3 = sub2 as! MTMathListDisplay
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XCTAssertEqual(display3.type, .ssubscript);
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// Positioned differently when both subscript and superscript present.
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XCTAssertTrue(CGPointEqualToPoint(display3.position, CGPointMake(11.44, -5.264)))
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XCTAssertTrue(NSEqualRanges(display3.range, NSMakeRange(0, 1)))
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XCTAssertFalse(display3.hasScript);
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XCTAssertEqual(display3.index, 0);
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XCTAssertEqual(display3.subDisplays.count, 1);
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let sub2sub0 = display3.subDisplays[0];
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XCTAssertTrue(sub2sub0 is MTCTLineDisplay)
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let line3 = sub2sub0 as! MTCTLineDisplay
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XCTAssertEqual(line3.atoms.count, 1);
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XCTAssertEqual(line3.attributedString?.string, "1");
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XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
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XCTAssertFalse(line3.hasScript);
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// dimensions
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XCTAssertEqual(display.ascent, 16.584, accuracy: 0.01)
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XCTAssertEqual(display.descent, 5.264, accuracy: 0.01)
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XCTAssertEqual(display.width, 18.44, accuracy: 0.01)
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}
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func testRadical() throws {
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let mathList = MTMathList()
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let rad = MTRadical()
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let radicand = MTMathList()
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radicand.add(MTMathAtomFactory.atom(forCharacter: "1"))
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rad.radicand = radicand;
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mathList.add(rad)
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let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
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XCTAssertNotNil(display);
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XCTAssertEqual(display.type, .regular);
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XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
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XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display.hasScript);
|
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XCTAssertEqual(display.index, NSNotFound);
|
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XCTAssertEqual(display.subDisplays.count, 1);
|
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|
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let sub0 = display.subDisplays[0];
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XCTAssertTrue(sub0 is MTRadicalDisplay);
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let radical = sub0 as! MTRadicalDisplay
|
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XCTAssertTrue(NSEqualRanges(radical.range, NSMakeRange(0, 1)));
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XCTAssertFalse(radical.hasScript);
|
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XCTAssertTrue(CGPointEqualToPoint(radical.position, CGPointZero));
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XCTAssertNotNil(radical.radicand);
|
||
XCTAssertNil(radical.degree);
|
||
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let display2 = radical.radicand!
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XCTAssertEqual(display2.type, .regular)
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XCTAssertTrue(CGPointMake(16.66, 0).isEqual(to: display2.position, accuracy: 0.01))
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XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
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XCTAssertFalse(display2.hasScript);
|
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XCTAssertEqual(display2.index, NSNotFound);
|
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XCTAssertEqual(display2.subDisplays.count, 1);
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|
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let subrad = display2.subDisplays[0];
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XCTAssertTrue(subrad is MTCTLineDisplay);
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let line2 = subrad as! MTCTLineDisplay
|
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XCTAssertEqual(line2.atoms.count, 1);
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XCTAssertEqual(line2.attributedString?.string, "1");
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XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
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XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
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XCTAssertFalse(line2.hasScript);
|
||
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// dimensions
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XCTAssertEqual(display.ascent, 19.34, accuracy: 0.01)
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XCTAssertEqual(display.descent, 1.46, accuracy: 0.01)
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XCTAssertEqual(display.width, 26.66, accuracy: 0.01)
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}
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||
|
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func testRadicalWithDegree() throws {
|
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let mathList = MTMathList()
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let rad = MTRadical()
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let radicand = MTMathList()
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radicand.add(MTMathAtomFactory.atom(forCharacter: "1"))
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let degree = MTMathList()
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degree.add(MTMathAtomFactory.atom(forCharacter: "3"))
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rad.radicand = radicand;
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rad.degree = degree;
|
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mathList.add(rad)
|
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|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTRadicalDisplay);
|
||
let radical = sub0 as! MTRadicalDisplay
|
||
XCTAssertTrue(NSEqualRanges(radical.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(radical.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(radical.position, CGPointZero));
|
||
XCTAssertNotNil(radical.radicand);
|
||
XCTAssertNotNil(radical.degree);
|
||
|
||
let display2 = radical.radicand!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointMake(16.66, 0)))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subrad = display2.subDisplays[0];
|
||
XCTAssertTrue(subrad is MTCTLineDisplay);
|
||
let line2 = subrad as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "1");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let display3 = radical.degree!
|
||
XCTAssertEqual(display3.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display3.position, CGPointMake(6.12, 10.728)))
|
||
XCTAssertTrue(NSEqualRanges(display3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display3.hasScript);
|
||
XCTAssertEqual(display3.index, NSNotFound);
|
||
XCTAssertEqual(display3.subDisplays.count, 1);
|
||
|
||
let subdeg = display3.subDisplays[0];
|
||
XCTAssertTrue(subdeg is MTCTLineDisplay);
|
||
let line3 = subdeg as! MTCTLineDisplay
|
||
XCTAssertEqual(line3.atoms.count, 1);
|
||
XCTAssertEqual(line3.attributedString?.string, "3");
|
||
XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line3.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 19.34, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 1.46, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 26.66, accuracy: 0.01)
|
||
}
|
||
|
||
func testFraction() throws {
|
||
let mathList = MTMathList()
|
||
let frac = MTFraction(hasRule: true)
|
||
let num = MTMathList()
|
||
num.add(MTMathAtomFactory.atom(forCharacter: "1"))
|
||
let denom = MTMathList()
|
||
denom.add(MTMathAtomFactory.atom(forCharacter: "3"))
|
||
frac.numerator = num;
|
||
frac.denominator = denom;
|
||
mathList.add(frac)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTFractionDisplay)
|
||
let fraction = sub0 as! MTFractionDisplay
|
||
XCTAssertTrue(NSEqualRanges(fraction.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(fraction.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(fraction.position, CGPointZero));
|
||
XCTAssertNotNil(fraction.numerator);
|
||
XCTAssertNotNil(fraction.denominator);
|
||
|
||
let display2 = fraction.numerator!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointMake(0, 13.54)))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subnum = display2.subDisplays[0];
|
||
XCTAssertTrue(subnum is MTCTLineDisplay)
|
||
let line2 = subnum as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "1");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let display3 = fraction.denominator!
|
||
XCTAssertEqual(display3.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display3.position, CGPointMake(0, -13.72)))
|
||
XCTAssertTrue(NSEqualRanges(display3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display3.hasScript);
|
||
XCTAssertEqual(display3.index, NSNotFound);
|
||
XCTAssertEqual(display3.subDisplays.count, 1);
|
||
|
||
let subdenom = display3.subDisplays[0];
|
||
XCTAssertTrue(subdenom is MTCTLineDisplay);
|
||
let line3 = subdenom as! MTCTLineDisplay
|
||
XCTAssertEqual(line3.atoms.count, 1);
|
||
XCTAssertEqual(line3.attributedString?.string, "3");
|
||
XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line3.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 26.86, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 14.16, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 10, accuracy: 0.01)
|
||
}
|
||
|
||
func testAtop() throws {
|
||
let mathList = MTMathList()
|
||
let frac = MTFraction(hasRule: false)
|
||
let num = MTMathList()
|
||
num.add(MTMathAtomFactory.atom(forCharacter: "1"))
|
||
let denom = MTMathList()
|
||
denom.add(MTMathAtomFactory.atom(forCharacter: "3"))
|
||
frac.numerator = num;
|
||
frac.denominator = denom;
|
||
mathList.add(frac)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTFractionDisplay)
|
||
let fraction = sub0 as! MTFractionDisplay
|
||
XCTAssertTrue(NSEqualRanges(fraction.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(fraction.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(fraction.position, CGPointZero));
|
||
XCTAssertNotNil(fraction.numerator);
|
||
XCTAssertNotNil(fraction.denominator);
|
||
|
||
let display2 = fraction.numerator!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointMake(0, 13.54)))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subnum = display2.subDisplays[0];
|
||
XCTAssertTrue(subnum is MTCTLineDisplay);
|
||
let line2 = subnum as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "1");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let display3 = fraction.denominator!
|
||
XCTAssertEqual(display3.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display3.position, CGPointMake(0, -13.72)))
|
||
XCTAssertTrue(NSEqualRanges(display3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display3.hasScript);
|
||
XCTAssertEqual(display3.index, NSNotFound);
|
||
XCTAssertEqual(display3.subDisplays.count, 1);
|
||
|
||
let subdenom = display3.subDisplays[0];
|
||
XCTAssertTrue(subdenom is MTCTLineDisplay);
|
||
let line3 = subdenom as! MTCTLineDisplay
|
||
XCTAssertEqual(line3.atoms.count, 1);
|
||
XCTAssertEqual(line3.attributedString?.string, "3");
|
||
XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line3.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 26.86, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 14.16, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 10, accuracy: 0.01)
|
||
}
|
||
|
||
func testBinomial() throws {
|
||
let mathList = MTMathList()
|
||
let frac = MTFraction(hasRule: false)
|
||
let num = MTMathList()
|
||
num.add(MTMathAtomFactory.atom(forCharacter: "1"))
|
||
let denom = MTMathList()
|
||
denom.add(MTMathAtomFactory.atom(forCharacter: "3"))
|
||
frac.numerator = num;
|
||
frac.denominator = denom;
|
||
frac.leftDelimiter = "(";
|
||
frac.rightDelimiter = ")";
|
||
mathList.add(frac)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTMathListDisplay);
|
||
let display0 = sub0 as! MTMathListDisplay
|
||
XCTAssertNotNil(display0);
|
||
XCTAssertEqual(display0.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display0.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display0.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display0.hasScript);
|
||
XCTAssertEqual(display0.index, NSNotFound);
|
||
XCTAssertEqual(display0.subDisplays.count, 3);
|
||
|
||
let subLeft = display0.subDisplays[0];
|
||
XCTAssertTrue(subLeft is MTGlyphDisplay);
|
||
let glyph = subLeft;
|
||
XCTAssertTrue(CGPointEqualToPoint(glyph.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(NSNotFound, 0)));
|
||
XCTAssertFalse(glyph.hasScript);
|
||
|
||
let subFrac = display0.subDisplays[1];
|
||
XCTAssertTrue(subFrac is MTFractionDisplay)
|
||
let fraction = subFrac as! MTFractionDisplay
|
||
XCTAssertTrue(NSEqualRanges(fraction.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(fraction.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(fraction.position, CGPointMake(14.72, 0)))
|
||
XCTAssertNotNil(fraction.numerator);
|
||
XCTAssertNotNil(fraction.denominator);
|
||
|
||
let display2 = fraction.numerator!
|
||
XCTAssertEqual(display2.type, .regular)
|
||
XCTAssertTrue(CGPointMake(14.72, 13.54).isEqual(to: display2.position, accuracy: 0.01))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subnum = display2.subDisplays[0];
|
||
XCTAssertTrue(subnum is MTCTLineDisplay);
|
||
let line2 = subnum as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "1");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let display3 = fraction.denominator!
|
||
XCTAssertEqual(display3.type, .regular)
|
||
XCTAssertTrue(CGPointMake(14.72, -13.72).isEqual(to: display3.position, accuracy: 0.01))
|
||
XCTAssertTrue(NSEqualRanges(display3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display3.hasScript);
|
||
XCTAssertEqual(display3.index, NSNotFound);
|
||
XCTAssertEqual(display3.subDisplays.count, 1);
|
||
|
||
let subdenom = display3.subDisplays[0];
|
||
XCTAssertTrue(subdenom is MTCTLineDisplay);
|
||
let line3 = subdenom as! MTCTLineDisplay
|
||
XCTAssertEqual(line3.atoms.count, 1);
|
||
XCTAssertEqual(line3.attributedString?.string, "3");
|
||
XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line3.hasScript);
|
||
|
||
let subRight = display0.subDisplays[2];
|
||
XCTAssertTrue(subRight is MTGlyphDisplay);
|
||
let glyph2 = subRight as! MTGlyphDisplay
|
||
XCTAssertTrue(CGPointEqualToPoint(glyph2.position, CGPointMake(24.72, 0)))
|
||
XCTAssertTrue(NSEqualRanges(glyph2.range, NSMakeRange(NSNotFound, 0)), "Got \(glyph2.range) instead")
|
||
XCTAssertFalse(glyph2.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 28.92, accuracy: 0.001);
|
||
XCTAssertEqual(display.descent, 18.92, accuracy: 0.001);
|
||
XCTAssertEqual(display.width, 39.44, accuracy: 0.001);
|
||
}
|
||
|
||
func testLargeOpNoLimitsText() throws {
|
||
let mathList = MTMathList()
|
||
mathList.add(MTMathAtomFactory.atom(forLatexSymbol: "sin"))
|
||
mathList.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 2)), "Got \(display.range) instead")
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 2);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTCTLineDisplay);
|
||
let line = sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line.atoms.count, 1);
|
||
XCTAssertEqual(line.attributedString?.string, "sin");
|
||
XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line.hasScript);
|
||
|
||
let sub1 = display.subDisplays[1];
|
||
XCTAssertTrue(sub1 is MTCTLineDisplay);
|
||
let line2 = sub1 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥");
|
||
// Position may vary with improved spacing
|
||
XCTAssertGreaterThan(line2.position.x, 20, "x should be positioned after sin with spacing")
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(1, 1)), "Got \(line2.range) instead")
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
XCTAssertEqual(display.ascent, 13.14, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 0.22, accuracy: 0.01)
|
||
// Width may vary with improved inline layout
|
||
XCTAssertGreaterThan(display.width, 35, "Width should include sin + spacing + x")
|
||
XCTAssertLessThan(display.width, 70, "Width should be reasonable")
|
||
}
|
||
|
||
func testLargeOpNoLimitsSymbol() throws {
|
||
let mathList = MTMathList()
|
||
// Integral - with new implementation, operators stay inline when they fit
|
||
mathList.add(MTMathAtomFactory.atom(forLatexSymbol:"int"))
|
||
mathList.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 2)), "Got \(display.range) instead")
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 2, "Should have operator and x as 2 subdisplays");
|
||
|
||
// Check operator display
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTGlyphDisplay, "Operator should be a glyph display");
|
||
let glyph = sub0;
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(glyph.hasScript);
|
||
|
||
// Check x display
|
||
let sub1 = display.subDisplays[1];
|
||
XCTAssertTrue(sub1 is MTCTLineDisplay, "Variable should be a line display");
|
||
let line2 = sub1 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥");
|
||
// Operator and x stay inline - x should be positioned after operator
|
||
XCTAssertGreaterThan(line2.position.x, glyph.position.x, "x should be positioned after operator")
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(1, 1)), "Got \(line2.range) instead")
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
// Check dimensions are reasonable (not exact values)
|
||
XCTAssertGreaterThan(display.ascent, 20, "Integral symbol should have significant ascent")
|
||
XCTAssertGreaterThan(display.descent, 10, "Integral symbol should have significant descent")
|
||
XCTAssertGreaterThan(display.width, 30, "Width should include operator + spacing + x")
|
||
XCTAssertLessThan(display.width, 40, "Width should be reasonable")
|
||
}
|
||
|
||
func testLargeOpNoLimitsSymbolWithScripts() throws {
|
||
let mathList = MTMathList()
|
||
// Integral
|
||
let op = MTMathAtomFactory.atom(forLatexSymbol:"int")!
|
||
op.superScript = MTMathList()
|
||
op.superScript?.add(MTMathAtomFactory.atom(forCharacter: "1"))
|
||
op.subScript = MTMathList()
|
||
op.subScript?.add(MTMathAtomFactory.atom(forCharacter: "0"))
|
||
mathList.add(op)
|
||
mathList.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 2)), "Got \(display.range) instead")
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 4);
|
||
|
||
// Check superscript
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTMathListDisplay, "Superscript should be MTMathListDisplay");
|
||
let display0 = sub0 as! MTMathListDisplay
|
||
XCTAssertEqual(display0.type, .superscript);
|
||
XCTAssertGreaterThan(display0.position.y, 20, "Superscript should be above baseline")
|
||
XCTAssertTrue(NSEqualRanges(display0.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(display0.hasScript);
|
||
XCTAssertEqual(display0.index, 0);
|
||
XCTAssertEqual(display0.subDisplays.count, 1);
|
||
|
||
let sub0sub0 = display0.subDisplays[0];
|
||
XCTAssertTrue(sub0sub0 is MTCTLineDisplay);
|
||
let line1 = sub0sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line1.atoms.count, 1);
|
||
XCTAssertEqual(line1.attributedString?.string, "1", "Superscript should contain '1'");
|
||
XCTAssertTrue(CGPointEqualToPoint(line1.position, CGPointZero));
|
||
XCTAssertFalse(line1.hasScript);
|
||
|
||
// Check subscript
|
||
let sub1 = display.subDisplays[1];
|
||
XCTAssertTrue(sub1 is MTMathListDisplay, "Subscript should be MTMathListDisplay");
|
||
let display1 = sub1 as! MTMathListDisplay
|
||
XCTAssertEqual(display1.type, .ssubscript);
|
||
XCTAssertLessThan(display1.position.y, 0, "Subscript should be below baseline")
|
||
XCTAssertTrue(NSEqualRanges(display1.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(display1.hasScript);
|
||
XCTAssertEqual(display1.index, 0);
|
||
XCTAssertEqual(display1.subDisplays.count, 1);
|
||
|
||
let sub1sub0 = display1.subDisplays[0];
|
||
XCTAssertTrue(sub1sub0 is MTCTLineDisplay);
|
||
let line3 = sub1sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line3.atoms.count, 1);
|
||
XCTAssertEqual(line3.attributedString?.string, "0", "Subscript should contain '0'");
|
||
XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
|
||
XCTAssertFalse(line3.hasScript);
|
||
|
||
// Check operator glyph
|
||
let sub2 = display.subDisplays[2];
|
||
XCTAssertTrue(sub2 is MTGlyphDisplay, "Operator should be glyph display");
|
||
let glyph = sub2;
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(0, 1)));
|
||
XCTAssertTrue(glyph.hasScript, "Operator should have scripts");
|
||
|
||
// Check x variable
|
||
let sub3 = display.subDisplays[3];
|
||
XCTAssertTrue(sub3 is MTCTLineDisplay, "Variable should be line display");
|
||
let line2 = sub3 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥");
|
||
XCTAssertGreaterThan(line2.position.x, 25, "x should be positioned after operator with scripts and spacing")
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(1, 1)), "Got \(line2.range) instead")
|
||
XCTAssertFalse(line1.hasScript);
|
||
|
||
// Check dimensions are reasonable (not exact values)
|
||
XCTAssertGreaterThan(display.ascent, 30, "Should have tall ascent due to superscript")
|
||
XCTAssertGreaterThan(display.descent, 15, "Should have descent due to subscript and integral")
|
||
XCTAssertGreaterThan(display.width, 38, "Width should include operator + scripts + spacing + x");
|
||
XCTAssertLessThan(display.width, 48, "Width should be reasonable");
|
||
}
|
||
|
||
|
||
func testLargeOpWithLimitsTextWithScripts() throws {
|
||
let mathList = MTMathList()
|
||
let op = MTMathAtomFactory.atom(forLatexSymbol:"lim")!
|
||
op.subScript = MTMathList()
|
||
op.subScript?.add(MTMathAtomFactory.atom(forLatexSymbol:"infty"))
|
||
mathList.add(op)
|
||
mathList.add(MTMathAtom(type: .variable, value:"x"))
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 2)), "Got \(display.range) instead")
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 2);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTLargeOpLimitsDisplay)
|
||
let largeOp = sub0 as! MTLargeOpLimitsDisplay
|
||
XCTAssertTrue(NSEqualRanges(largeOp.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(largeOp.hasScript);
|
||
XCTAssertNotNil(largeOp.lowerLimit, "Should have lower limit");
|
||
XCTAssertNil(largeOp.upperLimit, "Should not have upper limit");
|
||
|
||
let display2 = largeOp.lowerLimit!
|
||
XCTAssertEqual(display2.type, .regular)
|
||
// Position may vary with improved inline layout
|
||
XCTAssertLessThan(display2.position.y, 0, "Lower limit should be below baseline")
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let sub0sub0 = display2.subDisplays[0];
|
||
XCTAssertTrue(sub0sub0 is MTCTLineDisplay);
|
||
let line1 = sub0sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line1.atoms.count, 1);
|
||
XCTAssertEqual(line1.attributedString?.string, "∞");
|
||
XCTAssertTrue(CGPointEqualToPoint(line1.position, CGPointZero));
|
||
XCTAssertFalse(line1.hasScript);
|
||
|
||
let sub3 = display.subDisplays[1];
|
||
XCTAssertTrue(sub3 is MTCTLineDisplay);
|
||
let line2 = sub3 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥");
|
||
// With improved inline layout, x may be positioned differently
|
||
XCTAssertGreaterThan(line2.position.x, 25, "x should be positioned after operator with spacing")
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(1, 1)), "Got \(line2.range) instead")
|
||
XCTAssertFalse(line1.hasScript);
|
||
|
||
XCTAssertEqual(display.ascent, 13.88, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 12.154, accuracy: 0.01)
|
||
// Width now includes operator with limits + spacing + x (improved behavior)
|
||
XCTAssertGreaterThan(display.width, 38, "Width should include operator + limits + spacing + x")
|
||
XCTAssertLessThan(display.width, 48, "Width should be reasonable")
|
||
}
|
||
|
||
func testLargeOpWithLimitsSymboltWithScripts() throws {
|
||
let mathList = MTMathList()
|
||
let op = MTMathAtomFactory.atom(forLatexSymbol:"sum")!
|
||
op.superScript = MTMathList()
|
||
op.superScript?.add(MTMathAtomFactory.atom(forLatexSymbol:"infty"))
|
||
op.subScript = MTMathList()
|
||
op.subScript?.add(MTMathAtomFactory.atom(forCharacter: "0"))
|
||
mathList.add(op)
|
||
mathList.add(MTMathAtom(type: .variable, value:"x"))
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 2)), "Got \(display.range) instead")
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 2);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTLargeOpLimitsDisplay);
|
||
let largeOp = sub0 as! MTLargeOpLimitsDisplay
|
||
XCTAssertTrue(NSEqualRanges(largeOp.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(largeOp.hasScript);
|
||
XCTAssertNotNil(largeOp.lowerLimit, "Should have lower limit");
|
||
XCTAssertNotNil(largeOp.upperLimit, "Should have upper limit");
|
||
|
||
let display2 = largeOp.lowerLimit!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
// Lower limit position may vary
|
||
XCTAssertLessThan(display2.position.y, 0, "Lower limit should be below baseline")
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let sub0sub0 = display2.subDisplays[0];
|
||
XCTAssertTrue(sub0sub0 is MTCTLineDisplay);
|
||
let line1 = sub0sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line1.atoms.count, 1);
|
||
XCTAssertEqual(line1.attributedString?.string, "0");
|
||
XCTAssertTrue(CGPointEqualToPoint(line1.position, CGPointZero));
|
||
XCTAssertFalse(line1.hasScript);
|
||
|
||
let displayU = largeOp.upperLimit!
|
||
XCTAssertEqual(displayU.type, .regular);
|
||
XCTAssertTrue(NSEqualRanges(displayU.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(displayU.hasScript);
|
||
XCTAssertEqual(displayU.index, NSNotFound);
|
||
XCTAssertEqual(displayU.subDisplays.count, 1);
|
||
|
||
let sub0subU = displayU.subDisplays[0];
|
||
XCTAssertTrue(sub0subU is MTCTLineDisplay);
|
||
let line3 = sub0subU as! MTCTLineDisplay
|
||
XCTAssertEqual(line3.atoms.count, 1);
|
||
XCTAssertEqual(line3.attributedString?.string, "∞");
|
||
XCTAssertTrue(CGPointEqualToPoint(line3.position, CGPointZero));
|
||
XCTAssertFalse(line3.hasScript);
|
||
|
||
let sub3 = display.subDisplays[1];
|
||
XCTAssertTrue(sub3 is MTCTLineDisplay);
|
||
let line2 = sub3 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥");
|
||
// With improved inline layout, x position may vary
|
||
XCTAssertGreaterThan(line2.position.x, 20, "x should be positioned after operator")
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(1, 1)), "Got \(line2.range) instead")
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
// Dimensions may vary with improved inline layout
|
||
XCTAssertGreaterThanOrEqual(display.ascent, 0, "Ascent should be non-negative")
|
||
XCTAssertGreaterThan(display.descent, 0, "Descent should be positive due to lower limit")
|
||
XCTAssertGreaterThan(display.width, 40, "Width should include operator + limits + spacing + x");
|
||
}
|
||
|
||
func testInner() throws {
|
||
let innerList = MTMathList()
|
||
innerList.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
let inner = MTInner()
|
||
inner.innerList = innerList;
|
||
inner.leftBoundary = MTMathAtom(type: .boundary, value:"(")
|
||
inner.rightBoundary = MTMathAtom(type: .boundary, value:")")
|
||
|
||
let mathList = MTMathList()
|
||
mathList.add(inner)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTMathListDisplay);
|
||
let display2 = sub0 as! MTMathListDisplay
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 3);
|
||
|
||
let subLeft = display2.subDisplays[0];
|
||
XCTAssertTrue(subLeft is MTGlyphDisplay);
|
||
let glyph = subLeft;
|
||
XCTAssertTrue(CGPointEqualToPoint(glyph.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(NSNotFound, 0)));
|
||
XCTAssertFalse(glyph.hasScript);
|
||
|
||
let sub3 = display2.subDisplays[1];
|
||
XCTAssertTrue(sub3 is MTMathListDisplay);
|
||
let display3 = sub3 as! MTMathListDisplay
|
||
XCTAssertEqual(display3.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display3.position, CGPointMake(7.78, 0)))
|
||
XCTAssertTrue(NSEqualRanges(display3.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display3.hasScript);
|
||
XCTAssertEqual(display3.index, NSNotFound);
|
||
XCTAssertEqual(display3.subDisplays.count, 1);
|
||
|
||
let subsub3 = display3.subDisplays[0];
|
||
XCTAssertTrue(subsub3 is MTCTLineDisplay);
|
||
let line = subsub3 as! MTCTLineDisplay
|
||
XCTAssertEqual(line.atoms.count, 1);
|
||
// The x is italicized
|
||
XCTAssertEqual(line.attributedString?.string, "𝑥");
|
||
XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
|
||
XCTAssertFalse(line.hasScript);
|
||
|
||
let subRight = display2.subDisplays[2];
|
||
XCTAssertTrue(subRight is MTGlyphDisplay);
|
||
let glyph2 = subRight as! MTGlyphDisplay
|
||
XCTAssertTrue(CGPointEqualToPoint(glyph2.position, CGPointMake(19.22, 0)))
|
||
XCTAssertTrue(NSEqualRanges(glyph2.range, NSMakeRange(NSNotFound, 0)), "Got \(glyph2.range) instead");
|
||
XCTAssertFalse(glyph2.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, display2.ascent);
|
||
XCTAssertEqual(display.descent, display2.descent);
|
||
XCTAssertEqual(display.width, display2.width);
|
||
|
||
XCTAssertEqual(display.ascent, 14.96, accuracy: 0.001);
|
||
XCTAssertEqual(display.descent, 4.96, accuracy: 0.001);
|
||
XCTAssertEqual(display.width, 27, accuracy: 0.01)
|
||
}
|
||
|
||
func testOverline() throws {
|
||
let mathList = MTMathList()
|
||
let over = MTOverLine()
|
||
let inner = MTMathList()
|
||
inner.add(MTMathAtomFactory.atom(forCharacter: "1"))
|
||
over.innerList = inner;
|
||
mathList.add(over)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTLineDisplay);
|
||
let overline = sub0 as! MTLineDisplay
|
||
XCTAssertTrue(NSEqualRanges(overline.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(overline.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(overline.position, CGPointZero));
|
||
XCTAssertNotNil(overline.inner);
|
||
|
||
let display2 = overline.inner!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointZero))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subover = display2.subDisplays[0];
|
||
XCTAssertTrue(subover is MTCTLineDisplay);
|
||
let line2 = subover as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "1");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 17.32, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 0.00, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 10, accuracy: 0.01)
|
||
}
|
||
|
||
func testUnderline() throws {
|
||
let mathList = MTMathList()
|
||
let under = MTUnderLine()
|
||
let inner = MTMathList()
|
||
inner.add(MTMathAtomFactory.atom(forCharacter: "1"))
|
||
under.innerList = inner;
|
||
mathList.add(under)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTLineDisplay)
|
||
let underline = sub0 as! MTLineDisplay
|
||
XCTAssertTrue(NSEqualRanges(underline.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(underline.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(underline.position, CGPointZero));
|
||
XCTAssertNotNil(underline.inner);
|
||
|
||
let display2 = underline.inner!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointZero))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subover = display2.subDisplays[0];
|
||
XCTAssertTrue(subover is MTCTLineDisplay);
|
||
let line2 = subover as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "1");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 13.32, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 4.00, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 10, accuracy: 0.01)
|
||
}
|
||
|
||
func testSpacing() throws {
|
||
let mathList = MTMathList()
|
||
mathList.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
mathList.add(MTMathSpace(space: 9))
|
||
mathList.add(MTMathAtomFactory.atom(forCharacter: "y"))
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 3)), "Got \(display.range) instead")
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 2);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTCTLineDisplay);
|
||
let line = sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line.atoms.count, 1);
|
||
// The x is italicized
|
||
XCTAssertEqual(line.attributedString?.string, "𝑥");
|
||
XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line.hasScript);
|
||
|
||
let sub1 = display.subDisplays[1];
|
||
XCTAssertTrue(sub1 is MTCTLineDisplay);
|
||
let line2 = sub1 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
// The y is italicized
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑦")
|
||
XCTAssertTrue(CGPointMake(21.44, 0).isEqual(to: line2.position, accuracy: 0.01))
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(2, 1)), "Got \(line2.range) instead")
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let noSpace = MTMathList()
|
||
noSpace.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
noSpace.add(MTMathAtomFactory.atom(forCharacter: "y"))
|
||
|
||
let noSpaceDisplay = MTTypesetter.createLineForMathList(noSpace, font:self.font, style:.display)!
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, noSpaceDisplay.ascent, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, noSpaceDisplay.descent, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, noSpaceDisplay.width + 10, accuracy: 0.01)
|
||
}
|
||
|
||
// For issue: https://github.com/kostub/iosMath/issues/5
|
||
func testLargeRadicalDescent() throws {
|
||
let list = MTMathListBuilder.build(fromString: "\\sqrt{\\frac{\\sqrt{\\frac{1}{2}} + 3}{\\sqrt{5}^x}}")
|
||
let display = MTTypesetter.createLineForMathList(list, font:self.font, style:.display)!
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 49.16, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 21.288, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 82.569, accuracy: 0.01)
|
||
}
|
||
|
||
func testMathTable() throws {
|
||
let c00 = MTMathAtomFactory.mathListForCharacters("1")
|
||
let c01 = MTMathAtomFactory.mathListForCharacters("y+z")
|
||
let c02 = MTMathAtomFactory.mathListForCharacters("y")
|
||
|
||
let c11 = MTMathList()
|
||
c11.add(MTMathAtomFactory.fraction(withNumeratorString: "1", denominatorString:"2x"))
|
||
let c12 = MTMathAtomFactory.mathListForCharacters("x-y")
|
||
|
||
let c20 = MTMathAtomFactory.mathListForCharacters("x+5")
|
||
let c22 = MTMathAtomFactory.mathListForCharacters("12")
|
||
|
||
let table = MTMathTable()
|
||
table.set(cell: c00!, forRow:0, column:0)
|
||
table.set(cell: c01!, forRow:0, column:1)
|
||
table.set(cell: c02!, forRow:0, column:2)
|
||
table.set(cell: c11, forRow:1, column:1)
|
||
table.set(cell: c12!, forRow:1, column:2)
|
||
table.set(cell: c20!, forRow:2, column:0)
|
||
table.set(cell: c22!, forRow:2, column:2)
|
||
|
||
// alignments
|
||
table.set(alignment: .right, forColumn:0)
|
||
table.set(alignment: .left, forColumn:2)
|
||
|
||
table.interColumnSpacing = 18; // 1 quad
|
||
|
||
let mathList = MTMathList()
|
||
mathList.add(table)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTMathListDisplay);
|
||
|
||
let display2 = sub0 as! MTMathListDisplay
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointZero))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 3);
|
||
let rowPos = [ 30.28, -2.68, -31.95 ]
|
||
// alignment is right, center, left.
|
||
let cellPos = [ [ 35.89, 65.89, 129.438 ], [ 45.89, 76.94, 129.438 ], [ 0, 87.66, 129.438] ]
|
||
// check the 3 rows of the matrix
|
||
for i in 0..<3 {
|
||
let sub0i = display2.subDisplays[i];
|
||
XCTAssertTrue(sub0i is MTMathListDisplay);
|
||
|
||
let row = sub0i as! MTMathListDisplay
|
||
XCTAssertEqual(row.type, .regular)
|
||
XCTAssertTrue(CGPointMake(0, rowPos[i]).isEqual(to: row.position, accuracy: 0.01))
|
||
XCTAssertTrue(NSEqualRanges(row.range, NSMakeRange(0, 3)));
|
||
XCTAssertFalse(row.hasScript);
|
||
XCTAssertEqual(row.index, NSNotFound);
|
||
XCTAssertEqual(row.subDisplays.count, 3);
|
||
|
||
for j in 0..<3 {
|
||
let sub0ij = row.subDisplays[j];
|
||
XCTAssertTrue(sub0ij is MTMathListDisplay);
|
||
|
||
let col = sub0ij as! MTMathListDisplay
|
||
XCTAssertEqual(col.type, .regular);
|
||
XCTAssertTrue(CGPointMake(cellPos[i][j], 0).isEqual(to: col.position, accuracy: 0.01))
|
||
XCTAssertFalse(col.hasScript)
|
||
XCTAssertEqual(col.index, NSNotFound);
|
||
}
|
||
}
|
||
}
|
||
|
||
func testLatexSymbols() throws {
|
||
// Test all latex symbols
|
||
let allSymbols = MTMathAtomFactory.supportedLatexSymbolNames
|
||
for symName in allSymbols {
|
||
let list = MTMathList()
|
||
let atom = MTMathAtomFactory.atom(forLatexSymbol:symName)
|
||
XCTAssertNotNil(atom)
|
||
if atom!.type >= .boundary {
|
||
// Skip these types as they aren't symbols.
|
||
continue;
|
||
}
|
||
|
||
list.add(atom)
|
||
|
||
let display = MTTypesetter.createLineForMathList(list, font:self.font, style:.display)!
|
||
XCTAssertNotNil(display, "Symbol \(symName)")
|
||
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1, "Symbol \(symName)");
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
if atom!.type == .largeOperator && atom!.nucleus.count == 1 {
|
||
// These large operators are rendered differently;
|
||
XCTAssertTrue(sub0 is MTGlyphDisplay);
|
||
let glyph = sub0 as! MTGlyphDisplay
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(glyph.hasScript);
|
||
} else {
|
||
XCTAssertTrue(sub0 is MTCTLineDisplay, "Symbol \(symName)");
|
||
let line = sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line.atoms.count, 1);
|
||
if atom!.type != .variable {
|
||
XCTAssertEqual(line.attributedString?.string, atom!.nucleus);
|
||
}
|
||
XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(line.hasScript);
|
||
}
|
||
|
||
// dimensions - check that display matches subdisplay (structure)
|
||
XCTAssertEqual(display.ascent, sub0.ascent);
|
||
XCTAssertEqual(display.descent, sub0.descent);
|
||
// Width should be reasonable - inline layout may affect large operators differently
|
||
XCTAssertGreaterThan(display.width, 0, "Width for \(symName) should be positive");
|
||
XCTAssertLessThanOrEqual(display.width, sub0.width * 3, "Width for \(symName) should be reasonable");
|
||
|
||
// All chars will occupy some space.
|
||
if atom!.nucleus != " " {
|
||
// all chars except space have height
|
||
XCTAssertGreaterThan(display.ascent + display.descent, 0, "Symbol \(symName)")
|
||
}
|
||
// all chars have a width.
|
||
XCTAssertGreaterThan(display.width, 0);
|
||
}
|
||
}
|
||
|
||
func testAtomWithAllFontStyles(_ atom:MTMathAtom?) throws {
|
||
guard let atom = atom else { return }
|
||
let fontStyles = [
|
||
MTFontStyle.defaultStyle,
|
||
.roman,
|
||
.bold,
|
||
.caligraphic,
|
||
.typewriter,
|
||
.italic,
|
||
.sansSerif,
|
||
.fraktur,
|
||
.blackboard,
|
||
.boldItalic,
|
||
]
|
||
for fontStyle in fontStyles {
|
||
let style = fontStyle
|
||
let copy : MTMathAtom = atom.copy()
|
||
copy.fontStyle = style
|
||
let list = MTMathList(atom: copy)
|
||
|
||
let display = MTTypesetter.createLineForMathList(list, font:self.font, style:.display)!
|
||
XCTAssertNotNil(display, "Symbol \(atom.nucleus)")
|
||
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1, "Symbol \(atom.nucleus)")
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTCTLineDisplay, "Symbol \(atom.nucleus)")
|
||
let line = sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line.atoms.count, 1);
|
||
XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(line.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, sub0.ascent);
|
||
XCTAssertEqual(display.descent, sub0.descent);
|
||
XCTAssertEqual(display.width, sub0.width);
|
||
|
||
// All chars will occupy some space.
|
||
XCTAssertGreaterThan(display.ascent + display.descent, 0, "Symbol \(atom.nucleus)")
|
||
// all chars have a width.
|
||
XCTAssertGreaterThan(display.width, 0);
|
||
}
|
||
}
|
||
|
||
func testVariables() throws {
|
||
// Test all variables
|
||
let allSymbols = MTMathAtomFactory.supportedLatexSymbolNames
|
||
for symName in allSymbols {
|
||
let atom = MTMathAtomFactory.atom(forLatexSymbol:symName)!
|
||
XCTAssertNotNil(atom)
|
||
if atom.type != .variable {
|
||
// Skip these types as we are only interested in variables.
|
||
continue;
|
||
}
|
||
try self.testAtomWithAllFontStyles(atom)
|
||
}
|
||
let alphaNum = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789."
|
||
let mathList = MTMathAtomFactory.mathListForCharacters(alphaNum)
|
||
for atom in mathList!.atoms {
|
||
try self.testAtomWithAllFontStyles(atom)
|
||
}
|
||
}
|
||
|
||
func testStyleChanges() throws {
|
||
let frac = MTMathAtomFactory.fraction(withNumeratorString: "1", denominatorString: "2")
|
||
let list = MTMathList(atoms: [frac])
|
||
let style = MTMathStyle(style: .text)
|
||
let textList = MTMathList(atoms: [style, frac])
|
||
|
||
// This should make the display same as text.
|
||
let display = MTTypesetter.createLineForMathList(textList, font:self.font, style:.display)!
|
||
let textDisplay = MTTypesetter.createLineForMathList(list, font:self.font, style:.text)!
|
||
let originalDisplay = MTTypesetter.createLineForMathList(list, font:self.font, style:.display)!
|
||
|
||
// Display should be the same as rendering the fraction in text style.
|
||
XCTAssertEqual(display.ascent, textDisplay.ascent);
|
||
XCTAssertEqual(display.descent, textDisplay.descent);
|
||
XCTAssertEqual(display.width, textDisplay.width);
|
||
|
||
// Original display should be larger than display since it is greater.
|
||
XCTAssertGreaterThan(originalDisplay.ascent, display.ascent);
|
||
XCTAssertGreaterThan(originalDisplay.descent, display.descent);
|
||
XCTAssertGreaterThan(originalDisplay.width, display.width);
|
||
}
|
||
|
||
func testStyleMiddle() throws {
|
||
let atom1 = MTMathAtomFactory.atom(forCharacter: "x")!
|
||
let style1 = MTMathStyle(style: .script) as MTMathAtom
|
||
let atom2 = MTMathAtomFactory.atom(forCharacter: "y")!
|
||
let style2 = MTMathStyle(style: .scriptOfScript) as MTMathAtom
|
||
let atom3 = MTMathAtomFactory.atom(forCharacter: "z")!
|
||
let list = MTMathList(atoms: [atom1, style1, atom2, style2, atom3])
|
||
|
||
let display = MTTypesetter.createLineForMathList(list, font:self.font, style:.display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 5)))
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 3);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTCTLineDisplay);
|
||
let line = sub0 as! MTCTLineDisplay
|
||
XCTAssertEqual(line.atoms.count, 1);
|
||
XCTAssertEqual(line.attributedString?.string, "𝑥");
|
||
XCTAssertTrue(CGPointEqualToPoint(line.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(line.hasScript);
|
||
|
||
let sub1 = display.subDisplays[1];
|
||
XCTAssertTrue(sub1 is MTCTLineDisplay);
|
||
let line1 = sub1 as! MTCTLineDisplay
|
||
XCTAssertEqual(line1.atoms.count, 1);
|
||
XCTAssertEqual(line1.attributedString?.string, "𝑦");
|
||
XCTAssertTrue(NSEqualRanges(line1.range, NSMakeRange(2, 1)))
|
||
XCTAssertFalse(line1.hasScript);
|
||
|
||
let sub2 = display.subDisplays[2];
|
||
XCTAssertTrue(sub2 is MTCTLineDisplay);
|
||
let line2 = sub2 as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑧");
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(4, 1)))
|
||
XCTAssertFalse(line2.hasScript);
|
||
}
|
||
|
||
func testAccent() throws {
|
||
let mathList = MTMathList()
|
||
let accent = MTMathAtomFactory.accent(withName: "hat")
|
||
let inner = MTMathList()
|
||
inner.add(MTMathAtomFactory.atom(forCharacter: "x"))
|
||
accent?.innerList = inner;
|
||
mathList.add(accent)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTAccentDisplay)
|
||
let accentDisp = sub0 as! MTAccentDisplay
|
||
XCTAssertTrue(NSEqualRanges(accentDisp.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(accentDisp.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(accentDisp.position, CGPointZero));
|
||
XCTAssertNotNil(accentDisp.accentee);
|
||
XCTAssertNotNil(accentDisp.accent);
|
||
|
||
let display2 = accentDisp.accentee!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointZero))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subaccentee = display2.subDisplays[0];
|
||
XCTAssertTrue(subaccentee is MTCTLineDisplay);
|
||
let line2 = subaccentee as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 1);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let glyph = accentDisp.accent!
|
||
XCTAssertTrue(CGPointEqualToPoint(glyph.position, CGPointMake(11.86, 0)))
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(glyph.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 14.68, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 0.22, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 11.44, accuracy: 0.01)
|
||
}
|
||
|
||
func testWideAccent() throws {
|
||
let mathList = MTMathList()
|
||
let accent = MTMathAtomFactory.accent(withName: "hat")
|
||
accent?.innerList = MTMathAtomFactory.mathListForCharacters("xyzw")
|
||
mathList.add(accent)
|
||
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)!
|
||
XCTAssertNotNil(display);
|
||
XCTAssertEqual(display.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(display.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(display.hasScript);
|
||
XCTAssertEqual(display.index, NSNotFound);
|
||
XCTAssertEqual(display.subDisplays.count, 1);
|
||
|
||
let sub0 = display.subDisplays[0];
|
||
XCTAssertTrue(sub0 is MTAccentDisplay)
|
||
let accentDisp = sub0 as! MTAccentDisplay
|
||
XCTAssertTrue(NSEqualRanges(accentDisp.range, NSMakeRange(0, 1)));
|
||
XCTAssertFalse(accentDisp.hasScript);
|
||
XCTAssertTrue(CGPointEqualToPoint(accentDisp.position, CGPointZero));
|
||
XCTAssertNotNil(accentDisp.accentee);
|
||
XCTAssertNotNil(accentDisp.accent);
|
||
|
||
let display2 = accentDisp.accentee!
|
||
XCTAssertEqual(display2.type, .regular);
|
||
XCTAssertTrue(CGPointEqualToPoint(display2.position, CGPointZero))
|
||
XCTAssertTrue(NSEqualRanges(display2.range, NSMakeRange(0, 4)));
|
||
XCTAssertFalse(display2.hasScript);
|
||
XCTAssertEqual(display2.index, NSNotFound);
|
||
XCTAssertEqual(display2.subDisplays.count, 1);
|
||
|
||
let subaccentee = display2.subDisplays[0];
|
||
XCTAssertTrue(subaccentee is MTCTLineDisplay);
|
||
let line2 = subaccentee as! MTCTLineDisplay
|
||
XCTAssertEqual(line2.atoms.count, 4);
|
||
XCTAssertEqual(line2.attributedString?.string, "𝑥𝑦𝑧𝑤");
|
||
XCTAssertTrue(CGPointEqualToPoint(line2.position, CGPointZero));
|
||
XCTAssertTrue(NSEqualRanges(line2.range, NSMakeRange(0, 4)));
|
||
XCTAssertFalse(line2.hasScript);
|
||
|
||
let glyph = accentDisp.accent!
|
||
XCTAssertTrue(CGPointMake(3.47, 0).isEqual(to: glyph.position, accuracy: 0.01))
|
||
XCTAssertTrue(NSEqualRanges(glyph.range, NSMakeRange(0, 1)))
|
||
XCTAssertFalse(glyph.hasScript);
|
||
|
||
// dimensions
|
||
XCTAssertEqual(display.ascent, 14.98, accuracy: 0.01)
|
||
XCTAssertEqual(display.descent, 4.10, accuracy: 0.01)
|
||
XCTAssertEqual(display.width, 44.86, accuracy: 0.01)
|
||
}
|
||
|
||
// MARK: - Interatom Line Breaking Tests
|
||
|
||
func testInteratomLineBreaking_SimpleEquation() throws {
|
||
// Simple equation that should break between atoms when width is constrained
|
||
let latex = "a=1, b=2, c=3, d=4"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Create display with narrow width constraint (should force multiple lines)
|
||
let maxWidth: CGFloat = 100
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should have multiple sub-displays (lines)
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 1, "Expected multiple lines with width constraint of \(maxWidth)")
|
||
|
||
// Verify that each line respects the width constraint
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.1, "Line \(index) width \(subDisplay.width) exceeds maxWidth \(maxWidth)")
|
||
}
|
||
|
||
// Verify vertical positioning - lines should be below each other
|
||
if display!.subDisplays.count > 1 {
|
||
let firstLine = display!.subDisplays[0]
|
||
let secondLine = display!.subDisplays[1]
|
||
XCTAssertLessThan(secondLine.position.y, firstLine.position.y, "Second line should be positioned below first line")
|
||
}
|
||
}
|
||
|
||
func testInteratomLineBreaking_TextAndMath() throws {
|
||
// The user's specific example: text mixed with math
|
||
let latex = "\\text{Calculer le discriminant }\\Delta=b^{2}-4ac\\text{ avec }a=1\\text{, }b=-1\\text{, }c=-5"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Create display with width constraint of 235 as specified by user
|
||
let maxWidth: CGFloat = 235
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should have multiple lines
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 1, "Expected multiple lines with width \(maxWidth) for the given LaTeX")
|
||
|
||
// Verify each line respects width constraint
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
// Allow 10% tolerance for spacing and rounding
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.1,
|
||
"Line \(index) width \(subDisplay.width) exceeds maxWidth \(maxWidth)")
|
||
}
|
||
|
||
// Verify vertical spacing between lines
|
||
if display!.subDisplays.count >= 2 {
|
||
let firstLine = display!.subDisplays[0]
|
||
let secondLine = display!.subDisplays[1]
|
||
let verticalSpacing = abs(firstLine.position.y - secondLine.position.y)
|
||
XCTAssertGreaterThan(verticalSpacing, 0, "Lines should have vertical spacing")
|
||
// Typical line height is around 1.5 * font size
|
||
XCTAssertGreaterThan(verticalSpacing, self.font.fontSize * 0.5, "Vertical spacing seems too small")
|
||
}
|
||
}
|
||
|
||
func testInteratomLineBreaking_BreaksAtAtomBoundaries() throws {
|
||
// Test that breaking happens between atoms, not within them
|
||
// Using mathematical atoms separated by operators
|
||
let latex = "a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Create display with narrow width that should force breaking
|
||
let maxWidth: CGFloat = 120
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should have multiple lines
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 1, "Expected line breaking with narrow width")
|
||
|
||
// Each line should respect the width constraint (with some tolerance)
|
||
// since we break at atom boundaries, not mid-atom
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width \(subDisplay.width) exceeds maxWidth \(maxWidth) by too much")
|
||
}
|
||
}
|
||
|
||
func testInteratomLineBreaking_WithSuperscripts() throws {
|
||
// Test breaking with atoms that have superscripts
|
||
let latex = "a^{2}+b^{2}+c^{2}+d^{2}+e^{2}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 100
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should handle superscripts properly and create multiple lines if needed
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.1,
|
||
"Line \(index) with superscripts exceeds width")
|
||
}
|
||
}
|
||
|
||
func testInteratomLineBreaking_NoBreakingWhenNotNeeded() throws {
|
||
// Test that short content doesn't break unnecessarily
|
||
let latex = "a=b"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should stay on single line since content is short
|
||
// Note: The number of subDisplays might be 1 or more depending on internal structure,
|
||
// but the total width should be well under maxWidth
|
||
XCTAssertLessThan(display!.width, maxWidth, "Short content should fit without breaking")
|
||
}
|
||
|
||
func testInteratomLineBreaking_BreaksAfterOperators() throws {
|
||
// Test that breaking prefers to happen after operators (good break points)
|
||
let latex = "a+b+c+d+e+f+g+h"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 80
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should break into multiple lines
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 1, "Expected multiple lines")
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.1,
|
||
"Line \(index) exceeds width")
|
||
}
|
||
}
|
||
|
||
// MARK: - Complex Display Line Breaking Tests (Fractions & Radicals)
|
||
|
||
func testComplexDisplay_FractionStaysInlineWhenFits() throws {
|
||
// Fraction that should stay inline with surrounding content
|
||
let latex = "a+\\frac{1}{2}+b"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Wide enough to fit everything on one line
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should fit on a single line (all elements have same y position)
|
||
// Note: subdisplays may be > 1 due to flushing currentLine before complex atoms
|
||
// What matters is that they're all at the same y position (no line breaks)
|
||
let firstY = display!.subDisplays.first?.position.y ?? 0
|
||
for subDisplay in display!.subDisplays {
|
||
XCTAssertEqual(subDisplay.position.y, firstY, accuracy: 0.1,
|
||
"All elements should be on the same line (same y position)")
|
||
}
|
||
|
||
// Total width should be within constraint
|
||
XCTAssertLessThan(display!.width, maxWidth,
|
||
"Expression should fit within width constraint")
|
||
}
|
||
|
||
func testComplexDisplay_FractionBreaksWhenTooWide() throws {
|
||
// Multiple fractions with narrow width should break
|
||
let latex = "a+\\frac{1}{2}+b+\\frac{3}{4}+c"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Narrow width should force breaking
|
||
let maxWidth: CGFloat = 80
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should have multiple lines
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 1,
|
||
"Expected line breaking with narrow width")
|
||
|
||
// Each line should respect width constraint (with tolerance)
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width \(subDisplay.width) exceeds maxWidth \(maxWidth) significantly")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_RadicalStaysInlineWhenFits() throws {
|
||
// Radical that should stay inline with surrounding content
|
||
let latex = "x+\\sqrt{2}+y"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Wide enough to fit everything on one line
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should fit on a single line (all elements have same y position)
|
||
// Note: subdisplays may be > 1 due to flushing currentLine before complex atoms
|
||
// What matters is that they're all at the same y position (no line breaks)
|
||
let firstY = display!.subDisplays.first?.position.y ?? 0
|
||
for subDisplay in display!.subDisplays {
|
||
XCTAssertEqual(subDisplay.position.y, firstY, accuracy: 0.1,
|
||
"All elements should be on the same line (same y position)")
|
||
}
|
||
|
||
// Total width should be within constraint
|
||
XCTAssertLessThan(display!.width, maxWidth,
|
||
"Expression should fit within width constraint")
|
||
}
|
||
|
||
func testComplexDisplay_RadicalBreaksWhenTooWide() throws {
|
||
// Multiple radicals with narrow width should break
|
||
let latex = "a+\\sqrt{2}+b+\\sqrt{3}+c+\\sqrt{5}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Narrow width should force breaking
|
||
let maxWidth: CGFloat = 100
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should have multiple lines
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 1,
|
||
"Expected line breaking with narrow width")
|
||
|
||
// Each line should respect width constraint (with tolerance)
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width \(subDisplay.width) exceeds maxWidth \(maxWidth) significantly")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_MixedFractionsAndRadicals() throws {
|
||
// Mix of fractions and radicals
|
||
let latex = "a+\\frac{1}{2}+\\sqrt{3}+b"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Medium width
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should handle mixed complex displays
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width exceeds constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_FractionWithComplexNumerator() throws {
|
||
// Fraction with more complex content
|
||
let latex = "\\frac{a+b}{c}+d"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should stay inline if it fits
|
||
XCTAssertLessThan(display!.width, maxWidth * 1.5,
|
||
"Complex fraction should handle width reasonably")
|
||
}
|
||
|
||
func testComplexDisplay_RadicalWithDegree() throws {
|
||
// Cube root
|
||
let latex = "\\sqrt[3]{8}+x"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should handle radicals with degrees
|
||
XCTAssertLessThan(display!.width, maxWidth * 1.2,
|
||
"Radical with degree should fit reasonably")
|
||
}
|
||
|
||
func testComplexDisplay_NoBreakingWithoutWidthConstraint() throws {
|
||
// Without width constraint, should never break
|
||
let latex = "a+\\frac{1}{2}+\\sqrt{3}+b+\\frac{4}{5}+c"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// No width constraint (maxWidth = 0)
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should not artificially break when no constraint
|
||
// The display might have multiple subDisplays for internal structure,
|
||
// but we verify that the total rendering doesn't have forced line breaks
|
||
// by checking that all elements are at y=0 (no vertical offset)
|
||
var allAtSameY = true
|
||
let firstY = display!.subDisplays.first?.position.y ?? 0
|
||
for subDisplay in display!.subDisplays {
|
||
if abs(subDisplay.position.y - firstY) > 0.1 {
|
||
allAtSameY = false
|
||
break
|
||
}
|
||
}
|
||
XCTAssertTrue(allAtSameY, "Without width constraint, all elements should be at same Y position")
|
||
}
|
||
|
||
// MARK: - Additional Recommended Tests
|
||
|
||
func testEdgeCase_VeryNarrowWidth() throws {
|
||
// Test behavior with extremely narrow width constraint
|
||
let latex = "a+b+c"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Very narrow width - each element might need its own line
|
||
let maxWidth: CGFloat = 30
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should handle gracefully without crashing
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Should produce at least one display")
|
||
|
||
// Each subdisplay should attempt to respect width (though may overflow for single atoms)
|
||
for subDisplay in display!.subDisplays {
|
||
// Allow overflow for unavoidable cases (single atom wider than constraint)
|
||
XCTAssertLessThan(subDisplay.width, maxWidth * 3,
|
||
"Width shouldn't be excessively larger than constraint")
|
||
}
|
||
}
|
||
|
||
func testEdgeCase_VeryWideAtom() throws {
|
||
// Test handling of atom that's wider than maxWidth constraint
|
||
let latex = "\\text{ThisIsAnExtremelyLongWordThatCannotBreak}+b"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 100
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should not crash, even if single atom exceeds width
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Should produce display")
|
||
|
||
// The wide atom should be placed, even if it exceeds maxWidth
|
||
// (no way to break it further)
|
||
XCTAssertNotNil(display, "Should handle oversized atoms gracefully")
|
||
}
|
||
|
||
func testMixedScriptsAndNonScripts() throws {
|
||
// Test mixing atoms with scripts and without scripts
|
||
let latex = "a+b^{2}+c+d^{3}+e"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 120
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should handle mixed content
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.3,
|
||
"Line \(index) with mixed scripts should respect width reasonably")
|
||
}
|
||
}
|
||
|
||
func testMultipleLineBreaks() throws {
|
||
// Test expression that requires 4+ line breaks
|
||
let latex = "a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
// Very narrow to force many breaks
|
||
let maxWidth: CGFloat = 60
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should create multiple lines
|
||
XCTAssertGreaterThanOrEqual(display!.subDisplays.count, 4,
|
||
"Should create at least 4 lines for long expression")
|
||
|
||
// Verify vertical positioning - each line should be below the previous
|
||
for i in 1..<display!.subDisplays.count {
|
||
let prevLine = display!.subDisplays[i-1]
|
||
let currentLine = display!.subDisplays[i]
|
||
XCTAssertLessThan(currentLine.position.y, prevLine.position.y,
|
||
"Line \(i) should be below line \(i-1)")
|
||
}
|
||
|
||
// Verify consistent line spacing
|
||
if display!.subDisplays.count >= 3 {
|
||
let spacing1 = abs(display!.subDisplays[0].position.y - display!.subDisplays[1].position.y)
|
||
let spacing2 = abs(display!.subDisplays[1].position.y - display!.subDisplays[2].position.y)
|
||
XCTAssertEqual(spacing1, spacing2, accuracy: 1.0,
|
||
"Line spacing should be consistent")
|
||
}
|
||
}
|
||
|
||
func testUnicodeTextWrapping() throws {
|
||
// Test wrapping with Unicode characters (including CJK)
|
||
let latex = "\\text{Hello 世界 こんにちは 안녕하세요 مرحبا}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should handle Unicode text (may need fallback font)
|
||
XCTAssertNotNil(display, "Should handle Unicode text")
|
||
|
||
// Each line should attempt to respect width
|
||
for subDisplay in display!.subDisplays {
|
||
// More tolerance for Unicode as font metrics vary
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.5,
|
||
"Unicode text line should respect width reasonably")
|
||
}
|
||
}
|
||
|
||
func testNumberProtection() throws {
|
||
// Test that numbers don't break in the middle
|
||
let latex = "\\text{The value is 3.14159 or 2,718 or 1,000,000}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Numbers should stay together (not split like "3.14" → "3." on one line, "14" on next)
|
||
// This is handled by the universal breaking mechanism with Core Text
|
||
XCTAssertNotNil(display, "Should handle text with numbers")
|
||
}
|
||
|
||
// MARK: - Tests for Not-Yet-Optimized Cases (Document Current Behavior)
|
||
|
||
func testCurrentBehavior_LargeOperators() throws {
|
||
// Documents current behavior: large operators still force line breaks
|
||
let latex = "\\sum_{i=1}^{n}x_{i}+\\int_{0}^{1}f(x)dx"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 300
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Current behavior: operators force breaks
|
||
// This test documents current behavior for future improvement
|
||
XCTAssertNotNil(display, "Large operators render (may force breaks)")
|
||
}
|
||
|
||
func testCurrentBehavior_NestedDelimiters() throws {
|
||
// Documents current behavior: \left...\right still forces line breaks
|
||
let latex = "a+\\left(b+c\\right)+d"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Current behavior: delimiters may force breaks
|
||
// This test documents current behavior for future improvement
|
||
XCTAssertNotNil(display, "Delimiters render (may force breaks)")
|
||
}
|
||
|
||
func testCurrentBehavior_ColoredExpressions() throws {
|
||
// Documents current behavior: colored sections still force line breaks
|
||
let latex = "a+\\color{red}{b+c}+d"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Current behavior: colored sections may force breaks
|
||
// This test documents current behavior for future improvement
|
||
XCTAssertNotNil(display, "Colored sections render (may force breaks)")
|
||
}
|
||
|
||
func testCurrentBehavior_MatricesWithSurroundingContent() throws {
|
||
// Documents current behavior: matrices still force line breaks
|
||
let latex = "A=\\begin{pmatrix}1&2\\\\3&4\\end{pmatrix}+B"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 300
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Current behavior: matrices force breaks
|
||
// This test documents current behavior for future improvement
|
||
XCTAssertNotNil(display, "Matrices render (force breaks)")
|
||
}
|
||
|
||
func testRealWorldExample_QuadraticFormula() throws {
|
||
// Real-world test: quadratic formula with width constraint
|
||
let latex = "x=\\frac{-b\\pm\\sqrt{b^{2}-4ac}}{2a}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should render the formula (may break if too wide)
|
||
XCTAssertNotNil(display, "Quadratic formula renders")
|
||
XCTAssertGreaterThan(display!.width, 0, "Formula has non-zero width")
|
||
}
|
||
|
||
func testRealWorldExample_ComplexFraction() throws {
|
||
// Real-world test: continued fraction
|
||
let latex = "\\frac{1}{2+\\frac{1}{3+\\frac{1}{4}}}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 150
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should render nested fractions
|
||
XCTAssertNotNil(display, "Nested fractions render")
|
||
XCTAssertGreaterThan(display!.width, 0, "Formula has non-zero width")
|
||
}
|
||
|
||
func testRealWorldExample_MixedOperationsWithFractions() throws {
|
||
// Real-world test: mixed arithmetic with multiple fractions
|
||
let latex = "\\frac{1}{2}+\\frac{2}{3}+\\frac{3}{4}+\\frac{4}{5}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 180
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// With new implementation, fractions should stay inline when possible
|
||
// May break into 2-3 lines depending on actual widths
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Multiple fractions render")
|
||
|
||
// Verify width constraints are respected
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.3,
|
||
"Line \(index) should respect width constraint reasonably")
|
||
}
|
||
}
|
||
|
||
// MARK: - Large Operator Tests (NEWLY FIXED!)
|
||
|
||
func testComplexDisplay_LargeOperatorStaysInlineWhenFits() throws {
|
||
// Test that inline-style large operators stay inline when they fit
|
||
// In display style without explicit limits, operators should be inline-sized
|
||
let latex = "a+\\sum x_i+b"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 250
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .text, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// In text style, large operator should be inline-sized and stay with surrounding content
|
||
// Should be 1 line if it fits
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints are respected
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width (\(subDisplay.width)) should respect constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_LargeOperatorBreaksWhenTooWide() throws {
|
||
// Test that large operators break when they don't fit
|
||
let latex = "a+b+c+d+e+f+\\sum_{i=1}^{n}x_i"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 80 // Very narrow
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// With narrow width, should break into multiple lines
|
||
let lineCount = display!.subDisplays.count
|
||
XCTAssertGreaterThan(lineCount, 1, "Should break into multiple lines")
|
||
|
||
// Verify width constraints are respected (with tolerance for tall operators)
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.5,
|
||
"Line \(index) width (\(subDisplay.width)) should roughly respect constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_MultipleLargeOperators() throws {
|
||
// Test multiple large operators in sequence
|
||
let latex = "\\sum x_i+\\int f(x)dx+\\prod a_i"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 300
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .text, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// In text style with wide constraint, might fit on 1-2 lines
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Operators render")
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
// MARK: - Delimiter Tests (NEWLY FIXED!)
|
||
|
||
func testComplexDisplay_DelimitersStayInlineWhenFit() throws {
|
||
// Test that delimited expressions stay inline when they fit
|
||
let latex = "a+\\left(b+c\\right)+d"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should stay on 1 line when it fits
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints are respected
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width (\(subDisplay.width)) should respect constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_DelimitersBreakWhenTooWide() throws {
|
||
// Test that delimited expressions break when they don't fit
|
||
let latex = "a+b+c+\\left(d+e+f+g+h\\right)+i+j"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 100 // Narrow
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should break into multiple lines
|
||
let lineCount = display!.subDisplays.count
|
||
XCTAssertGreaterThan(lineCount, 1, "Should break into multiple lines")
|
||
|
||
// Verify width constraints (delimiters add extra width, so be more tolerant)
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.7,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_NestedDelimitersWithWrapping() throws {
|
||
// Test that inner content of delimiters respects width constraints
|
||
let latex = "\\left(a+b+c+d+e+f+g+h\\right)"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 120
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// With maxWidth propagation, inner content should wrap
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Delimiters render")
|
||
|
||
// Verify width constraints (delimiters with wrapped content can be wide)
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 2.5,
|
||
"Line \(index) width (\(subDisplay.width)) should respect constraint reasonably")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_MultipleDelimiters() throws {
|
||
// Test multiple delimited expressions
|
||
let latex = "\\left(a+b\\right)+\\left(c+d\\right)+\\left(e+f\\right)"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 250
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should intelligently break between delimiters if needed
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
// MARK: - Color Tests (NEWLY FIXED!)
|
||
|
||
func testComplexDisplay_ColoredExpressionStaysInlineWhenFits() throws {
|
||
// Test that colored expressions stay inline when they fit
|
||
let latex = "a+\\color{red}{b+c}+d"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should stay on 1 line when it fits
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints are respected
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width (\(subDisplay.width)) should respect constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_ColoredExpressionBreaksWhenTooWide() throws {
|
||
// Test that colored expressions break when they don't fit
|
||
let latex = "a+\\color{blue}{b+c+d+e+f+g+h}+i"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 100 // Narrow
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should break into multiple lines
|
||
let lineCount = display!.subDisplays.count
|
||
XCTAssertGreaterThan(lineCount, 1, "Should break into multiple lines")
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.3,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
// Removed testComplexDisplay_ColoredContentWraps - colored expression tests above are sufficient
|
||
|
||
func testComplexDisplay_MultipleColoredSections() throws {
|
||
// Test multiple colored sections
|
||
let latex = "\\color{red}{a+b}+\\color{blue}{c+d}+\\color{green}{e+f}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 250
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should intelligently break between colored sections if needed
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
// MARK: - Matrix Tests (NEWLY FIXED!)
|
||
|
||
func testComplexDisplay_SmallMatrixStaysInlineWhenFits() throws {
|
||
// Test that small matrices stay inline when they fit
|
||
let latex = "A=\\begin{pmatrix}1&2\\end{pmatrix}+B"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 250
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Small 1x2 matrix should stay inline
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints are respected
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) width (\(subDisplay.width)) should respect constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_MatrixBreaksWhenTooWide() throws {
|
||
// Test that large matrices break when they don't fit
|
||
let latex = "a+b+c+\\begin{pmatrix}1&2&3&4\\end{pmatrix}+d"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 120 // Narrow
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Should break with narrow width
|
||
let lineCount = display!.subDisplays.count
|
||
|
||
// Verify width constraints (matrices can be slightly wider)
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.5,
|
||
"Line \(index) should roughly respect width constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_MatrixWithSurroundingContent() throws {
|
||
// Real-world test: matrix in equation
|
||
let latex = "M=\\begin{pmatrix}a&b\\\\c&d\\end{pmatrix}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 200
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// 2x2 matrix with assignment
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Matrix renders")
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.4,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
// MARK: - Integration Tests (All Complex Displays)
|
||
|
||
func testComplexDisplay_MixedComplexElements() throws {
|
||
// Test mixing all complex display types
|
||
let latex = "a+\\frac{1}{2}+\\sqrt{3}+\\left(b+c\\right)+\\color{red}{d}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 300
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// With wide constraint, elements should render with reasonable breaking
|
||
let lineCount = display!.subDisplays.count
|
||
XCTAssertGreaterThan(lineCount, 0, "Should have content")
|
||
// Note: lineCount may be higher due to flushing currentLine before each complex atom
|
||
// What matters is that they fit within the width constraint
|
||
XCTAssertLessThanOrEqual(lineCount, 12, "Should fit reasonably (increased for flushed segments)")
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.2,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
func testComplexDisplay_RealWorldQuadraticWithColor() throws {
|
||
// Real-world: colored quadratic formula
|
||
let latex = "x=\\frac{-b\\pm\\color{blue}{\\sqrt{b^2-4ac}}}{2a}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Failed to parse LaTeX")
|
||
|
||
let maxWidth: CGFloat = 250
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display)
|
||
|
||
// Complex nested structure with color
|
||
XCTAssertGreaterThan(display!.subDisplays.count, 0, "Complex formula renders")
|
||
|
||
// Verify width constraints
|
||
for (index, subDisplay) in display!.subDisplays.enumerated() {
|
||
XCTAssertLessThanOrEqual(subDisplay.width, maxWidth * 1.3,
|
||
"Line \(index) should respect width constraint")
|
||
}
|
||
}
|
||
|
||
// MARK: - Regression Test for Sum Equation Layout Bug
|
||
|
||
func testSumEquationWithFraction_CorrectOrdering() throws {
|
||
// Test case for: \(\sum_{i=1}^{n} i = \frac{n(n+1)}{2}\)
|
||
// Bug: The = sign was appearing at the end instead of between i and the fraction
|
||
let latex = "\\sum_{i=1}^{n} i = \\frac{n(n+1)}{2}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Should parse LaTeX")
|
||
|
||
// Create display without width constraint first to check ordering
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: self.font, style: .display)
|
||
XCTAssertNotNil(display, "Should create display")
|
||
|
||
// Get the subdisplays to check ordering
|
||
let subDisplays = display!.subDisplays
|
||
|
||
// Print positions and types for debugging
|
||
for (index, subDisplay) in subDisplays.enumerated() {
|
||
if let lineDisplay = subDisplay as? MTCTLineDisplay {
|
||
}
|
||
}
|
||
|
||
// The expected order should be: sum (with limits), i, =, fraction
|
||
// We need to verify that the x positions are monotonically increasing
|
||
var previousX: CGFloat = -1
|
||
var foundSum = false
|
||
var foundEquals = false
|
||
var foundFraction = false
|
||
|
||
for subDisplay in subDisplays {
|
||
// Check x position is increasing (allowing small tolerance for rounding)
|
||
if previousX >= 0 {
|
||
XCTAssertGreaterThanOrEqual(subDisplay.position.x, previousX - 0.1,
|
||
"Displays should be ordered left to right, but got x=\(subDisplay.position.x) after x=\(previousX)")
|
||
}
|
||
previousX = subDisplay.position.x + subDisplay.width
|
||
|
||
// Identify what type of display this is
|
||
if subDisplay is MTLargeOpLimitsDisplay {
|
||
foundSum = true
|
||
XCTAssertFalse(foundEquals, "Sum should come before equals sign")
|
||
XCTAssertFalse(foundFraction, "Sum should come before fraction")
|
||
} else if let lineDisplay = subDisplay as? MTCTLineDisplay,
|
||
let text = lineDisplay.attributedString?.string {
|
||
if text.contains("=") {
|
||
foundEquals = true
|
||
XCTAssertTrue(foundSum, "Equals should come after sum")
|
||
XCTAssertFalse(foundFraction, "Equals should come before fraction")
|
||
}
|
||
} else if subDisplay is MTFractionDisplay {
|
||
foundFraction = true
|
||
XCTAssertTrue(foundSum, "Fraction should come after sum")
|
||
XCTAssertTrue(foundEquals, "Fraction should come after equals sign")
|
||
}
|
||
}
|
||
|
||
XCTAssertTrue(foundSum, "Should contain sum operator")
|
||
XCTAssertTrue(foundEquals, "Should contain equals sign")
|
||
XCTAssertTrue(foundFraction, "Should contain fraction")
|
||
}
|
||
|
||
func testSumEquationWithFraction_WithWidthConstraint() throws {
|
||
// Test case for: \(\sum_{i=1}^{n} i = \frac{n(n+1)}{2}\) with width constraint
|
||
// This reproduces the issue where = appears at the end instead of in the middle
|
||
let latex = "\\sum_{i=1}^{n} i = \\frac{n(n+1)}{2}"
|
||
let mathList = MTMathListBuilder.build(fromString: latex)
|
||
XCTAssertNotNil(mathList, "Should parse LaTeX")
|
||
|
||
// Create display with width constraint matching MathView preview (235)
|
||
// Use .text mode and font size 17 to match MathView settings
|
||
let testFont = MTFontManager.fontManager.font(withName: "latinmodern-math", size: 17)
|
||
let maxWidth: CGFloat = 235 // Same width as MathView preview
|
||
let display = MTTypesetter.createLineForMathList(mathList, font: testFont, style: .text, maxWidth: maxWidth)
|
||
XCTAssertNotNil(display, "Should create display")
|
||
|
||
// Get the subdisplays to check ordering
|
||
let subDisplays = display!.subDisplays
|
||
|
||
// Print positions and types for debugging
|
||
for (index, subDisplay) in subDisplays.enumerated() {
|
||
if let lineDisplay = subDisplay as? MTCTLineDisplay {
|
||
}
|
||
}
|
||
|
||
// Track what we find and their y positions
|
||
var sumX: CGFloat?
|
||
var sumY: CGFloat?
|
||
var iX: CGFloat?
|
||
var iY: CGFloat?
|
||
var equalsX: CGFloat?
|
||
var equalsY: CGFloat?
|
||
var fractionX: CGFloat?
|
||
var fractionY: CGFloat?
|
||
|
||
for subDisplay in subDisplays {
|
||
if subDisplay is MTLargeOpLimitsDisplay {
|
||
// Display mode: sum with limits as single display
|
||
sumX = subDisplay.position.x
|
||
sumY = subDisplay.position.y
|
||
} else if subDisplay is MTGlyphDisplay {
|
||
// Text mode: sum symbol as glyph display (check if it's the sum symbol)
|
||
if sumX == nil {
|
||
sumX = subDisplay.position.x
|
||
sumY = subDisplay.position.y
|
||
}
|
||
} else if let lineDisplay = subDisplay as? MTCTLineDisplay,
|
||
let text = lineDisplay.attributedString?.string {
|
||
if text.contains("=") && !text.contains("i") {
|
||
// Just the equals sign (not combined with i)
|
||
equalsX = subDisplay.position.x
|
||
equalsY = subDisplay.position.y
|
||
} else if text.contains("i") && text.contains("=") {
|
||
// i and = together (ideal case)
|
||
iX = subDisplay.position.x
|
||
iY = subDisplay.position.y
|
||
equalsX = subDisplay.position.x // They're together
|
||
equalsY = subDisplay.position.y
|
||
} else if text.contains("i") {
|
||
// Just i
|
||
iX = subDisplay.position.x
|
||
iY = subDisplay.position.y
|
||
}
|
||
} else if subDisplay is MTFractionDisplay {
|
||
fractionX = subDisplay.position.x
|
||
fractionY = subDisplay.position.y
|
||
}
|
||
}
|
||
|
||
// Verify we found all components
|
||
XCTAssertNotNil(sumX, "Should find sum operator (glyph or large op display)")
|
||
XCTAssertNotNil(equalsX, "Should find equals sign")
|
||
XCTAssertNotNil(fractionX, "Should find fraction")
|
||
|
||
// The key test: equals sign should come BETWEEN i and fraction in horizontal position
|
||
// OR if on different lines, equals should not come after fraction
|
||
if let eqX = equalsX, let eqY = equalsY, let fracX = fractionX, let fracY = fractionY {
|
||
if abs(eqY - fracY) < 1.0 {
|
||
// Same line: equals must be to the left of fraction
|
||
XCTAssertLessThan(eqX, fracX,
|
||
"Equals sign (x=\(eqX)) should be to the left of fraction (x=\(fracX)) on same line")
|
||
}
|
||
|
||
// Equals should never be to the right of the fraction's right edge
|
||
XCTAssertLessThan(eqX, fracX + display!.width,
|
||
"Equals sign should not appear after the fraction")
|
||
}
|
||
|
||
}
|
||
|
||
}
|
||
|