//
//  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)
    }

}