Clean slate

SwiftMath/Tests/SwiftMathTests/MTFontMathTableV2Tests.swift

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+//
+//  MTFontMathTableV2Tests.swift
+//
+//
+//  Created by Peter Tang on 15/9/2023.
+//
+
+import XCTest
+@testable import SwiftUIMath
+
+final class MTFontMathTableV2Tests: XCTestCase {
+    func testMTFontV2Script() throws {
+        let size = CGFloat(Int.random(in: 20 ... 40))
+        MathFont.allCases.forEach {
+            let mTable = $0.mtfont(size: size).mathTable
+            XCTAssertNotNil(mTable)
+        }
+    }
+    private let executionQueue = DispatchQueue(label: "com.swiftmath.mathbundle", attributes: .concurrent)
+    private let executionGroup = DispatchGroup()
+    let totalCases = 1000
+    var testCount = 0
+    func testConcurrentThreadsafeScript() throws {
+        testCount = 0
+        var mathFont: MathFont { .allCases.randomElement()! }
+        var size: CGFloat { CGFloat.random(in: 20 ... 40) }
+        let mtfonts = Array( 0 ..< 10 ).map { _ in mathFont.mtfont(size: size) }
+        for caseNumber in 0 ..< totalCases {
+            helperConcurrentMTFontMathTableV2(caseNumber, mtfont: mtfonts.randomElement()!, in: executionGroup, on: executionQueue)
+        }
+        executionGroup.notify(queue: .main) { [weak self] in
+            guard let self = self else { return }
+            XCTAssertEqual(self.testCount, totalCases)
+        }
+        executionGroup.wait()
+    }
+    func helperConcurrentMTFontMathTableV2(_ count: Int, mtfont: MTFontV2, in group: DispatchGroup, on queue: DispatchQueue) {
+        let workitem = DispatchWorkItem {
+            let mTable = mtfont.mathTable
+            XCTAssertNotNil(mTable)
+        }
+        workitem.notify(queue: .main) { [weak self] in
+            self?.testCount += 1
+        }
+        queue.async(group: group, execute: workitem)
+    }
+
+}