test: Migrate foundational specs to Swift Testing

Tests/TPPDFTests/Math/CGPointMathTests.swift

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+//
+//  CGPointMathTests.swift
+//  TPPDF
+//
+//  Created by Philip Niedertscheider on 11.05.2017.
+//  Copyright © 2016-2026 techprimate GmbH. All rights reserved.
+//
+
+import CoreGraphics
+import Testing
+@testable import TPPDF
+
+struct CGPointMathTests {
+    @Test func addingPointsAddsBothCoordinates() {
+        // Arrange
+        let point = CGPoint(x: 10, y: 20)
+        let otherPoint = CGPoint(x: 30, y: 40)
+
+        // Act
+        let result = point + otherPoint
+
+        // Assert
+        #expect(result == CGPoint(x: 40, y: 60))
+    }
+
+    @Test func subtractingPointsSubtractsBothCoordinates() {
+        // Arrange
+        let point = CGPoint(x: 10, y: 20)
+        let otherPoint = CGPoint(x: 30, y: 40)
+
+        // Act
+        let result = point - otherPoint
+
+        // Assert
+        #expect(result == CGPoint(x: -20, y: -20))
+    }
+
+    @Test func addingScalarAddsToBothCoordinates() {
+        // Arrange
+        let point = CGPoint(x: 10, y: 20)
+        let value: CGFloat = 20
+
+        // Act
+        let result = point + value
+
+        // Assert
+        #expect(result == CGPoint(x: 30, y: 40))
+    }
+}

Tests/TPPDFTests/Metadata/PDFInfoEquatableTests.swift

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+//
+//  PDFInfoEquatableTests.swift
+//  TPPDF
+//
+//  Created by Philip Niedertscheider on 27.12.2017.
+//  Copyright © 2016-2026 techprimate GmbH. All rights reserved.
+//
+
+import Testing
+@testable import TPPDF
+
+struct PDFInfoEquatableTests {
+    @Test func defaultMetadataIsEqual() {
+        // Arrange
+        let info = PDFInfo()
+        let otherInfo = PDFInfo()
+
+        // Act
+        let isEqual = info == otherInfo
+
+        // Assert
+        #expect(isEqual)
+    }
+
+    @Test(arguments: ["title", "author", "subject", "keywords", "ownerPassword", "userPassword", "allowsPrinting", "allowsCopying"])
+    func changingMetadataMakesItUnequal(property: String) {
+        // Arrange
+        let info = PDFInfo()
+        let otherInfo = PDFInfo()
+        switch property {
+        case "title": otherInfo.title = "OTHER"
+        case "author": otherInfo.author = "OTHER"
+        case "subject": otherInfo.subject = "OTHER"
+        case "keywords": otherInfo.keywords = ["OTHER"]
+        case "ownerPassword": otherInfo.ownerPassword = "OTHER"
+        case "userPassword": otherInfo.userPassword = "OTHER"
+        case "allowsPrinting": otherInfo.allowsPrinting = false
+        default: otherInfo.allowsCopying = false
+        }
+
+        // Act
+        let isEqual = info == otherInfo
+
+        // Assert
+        #expect(!isEqual)
+    }
+}

Tests/TPPDFTests/Metadata/PDFInfoTests.swift

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+//
+//  PDFInfoTests.swift
+//  TPPDF
+//
+//  Created by Philip Niedertscheider on 11.04.2017.
+//  Copyright © 2016-2026 techprimate GmbH. All rights reserved.
+//
+
+import CoreGraphics
+import Testing
+@testable import TPPDF
+
+struct PDFInfoTests {
+    @Test func initializesWithDefaultMetadataAndPermissions() {
+        // Arrange
+        let expectedKeywords = ["tppdf", "pdf", "generator"]
+
+        // Act
+        let info = PDFInfo()
+
+        // Assert
+        #expect(info.title == "Title")
+        #expect(info.author == "Author")
+        #expect(info.subject == "Subject")
+        #expect(info.keywords == expectedKeywords)
+        #expect(info.ownerPassword == nil)
+        #expect(info.userPassword == nil)
+        #expect(info.allowsPrinting)
+        #expect(info.allowsCopying)
+    }
+
+    @Test func generatesMetadataWithConfiguredPasswordsAndPermissions() {
+        // Arrange
+        let info = PDFInfo()
+        info.ownerPassword = "1234"
+        info.userPassword = "ABCD"
+        info.allowsPrinting = false
+
+        // Act
+        let metadata = info.generate()
+
+        // Assert
+        #expect(metadata[kCGPDFContextTitle as String] as? String == "Title")
+        #expect(metadata[kCGPDFContextAuthor as String] as? String == "Author")
+        #expect(metadata[kCGPDFContextSubject as String] as? String == "Subject")
+        #expect(metadata[kCGPDFContextKeywords as String] as? [String] == ["tppdf", "pdf", "generator"])
+        #expect(metadata[kCGPDFContextAllowsPrinting as String] as? Bool == false)
+        #expect(metadata[kCGPDFContextAllowsCopying as String] as? Bool == true)
+        #expect(metadata[kCGPDFContextOwnerPassword as String] as? String == "1234")
+        #expect(metadata[kCGPDFContextUserPassword as String] as? String == "ABCD")
+        #expect((metadata[kCGPDFContextCreator as String] as? String ?? "").hasPrefix("xctest"))
+    }
+}