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Practical Dynamic Type, Part 3: Attributed Strings
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| import XCTest | |
| @testable import AttributedDynamicLabelDemo | |
| class AttributedDynamicLabelDemoTests: XCTestCase { | |
| var subject: AttributedStringView! | |
| override func setUp() { | |
| super.setUp() | |
| subject = AttributedStringView() | |
| } | |
| func testAttributedStringDynamicType() { | |
| var extraSmallSizes: [CGFloat] = [] | |
| var largeSizes: [CGFloat] = [] | |
| var biggestSizes: [CGFloat] = [] | |
| let fullTextRange = NSRange(location: 0, | |
| length: subject.display.attributedText!.string.count) | |
| /// Test extraSmall content size | |
| /// String 1: 14.8 | |
| /// String 2: 6.6 | |
| /// String 3: 14.8 | |
| /// String 4: 39.5 | |
| FontMetrics.default.sizeCategory = .extraSmall | |
| NSMutableAttributedString(attributedString: subject.display.attributedText!) | |
| .enumerateAttributes(in: fullTextRange, | |
| options: []) { attributes, range, stop in | |
| let gottenFont = attributes[.font] as! UIFont | |
| extraSmallSizes.append(gottenFont.pointSize) | |
| } | |
| /// Test large content size | |
| /// String 1: 18.0 | |
| /// String 2: 8.0 | |
| /// String 3: 18.0 | |
| /// String 4: 48.0 | |
| FontMetrics.default.sizeCategory = .large | |
| NSMutableAttributedString(attributedString: subject.display.attributedText!) | |
| .enumerateAttributes(in: fullTextRange, | |
| options: []) { attributes, range, stop in | |
| let gottenFont = attributes[.font] as! UIFont | |
| largeSizes.append(gottenFont.pointSize) | |
| } | |
| /// Test accessibilityExtraExtraExtraLarge content size | |
| /// String 1: 56.1 | |
| /// String 2: 24.9 | |
| /// String 3: 24.0 | |
| /// String 4: 149.6 | |
| FontMetrics.default.sizeCategory = .accessibilityExtraExtraExtraLarge | |
| NSMutableAttributedString(attributedString: subject.display.attributedText!) | |
| .enumerateAttributes(in: fullTextRange, | |
| options: []) { attributes, range, stop in | |
| let gottenFont = attributes[.font] as! UIFont | |
| biggestSizes.append(gottenFont.pointSize) | |
| } | |
| for (index, smallSize) in extraSmallSizes.enumerated() { | |
| XCTAssert(smallSize < largeSizes[index]) | |
| XCTAssert(largeSizes[index] < biggestSizes[index]) | |
| } | |
| } | |
| } |
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