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ichmagmaus111andClaude Opus 5.5
0622057a4f
Ghostgram for iOS, rebuilt from scratch on Telegram iOS 13.0. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
69 lines
2.7 KiB
Swift
69 lines
2.7 KiB
Swift
#if canImport(UIKit)
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import XCTest
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import UIKit
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@testable import RichTextEditorUIKit
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@available(iOS 16.0, *)
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final class BlockLayoutTests: XCTestCase {
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private func layout(_ s: String) -> BlockLayout {
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BlockLayout(attributedString: NSAttributedString(string: s,
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attributes: [.font: UIFont.systemFont(ofSize: 16)]), width: 300)
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}
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func test_lengthAndHeight() {
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let l = layout("Hello")
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XCTAssertEqual(l.length, 5)
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XCTAssertGreaterThan(l.boundingHeight, 0)
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}
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func test_caretAdvancesWithOffset() {
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let l = layout("Hello")
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XCTAssertLessThan(l.caretRect(atOffset: 0).minX, l.caretRect(atOffset: 5).minX)
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}
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func test_selectionRectsNonEmptyForRange() {
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let l = layout("Hello")
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XCTAssertFalse(l.selectionRects(start: 0, end: 5).isEmpty)
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}
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func test_closestOffset_nearStartIsZero() {
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let l = layout("Hello")
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XCTAssertEqual(l.closestOffset(toPoint: CGPoint(x: -50, y: 5)), 0)
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}
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func test_closestOffset_tapRightOfShortLastLine_landsAtLineEnd() {
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// Wraps to a long first line + a short last line at width 300.
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let l = layout("For decades they were just math. Now we photograph them.")
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let endCaret = l.caretRect(atOffset: l.length)
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XCTAssertGreaterThan(endCaret.midY, l.caretRect(atOffset: 0).midY) // sanity: it wrapped past line 1
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// Tap in the free space to the RIGHT of the short last line, on that line's row.
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let offset = l.closestOffset(toPoint: CGPoint(x: 5000, y: endCaret.midY))
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XCTAssertEqual(offset, l.length) // end of the last line — not the longer line above it
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}
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func test_replaceUpdatesText() {
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let l = layout("Hello")
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l.replace(start: 5, end: 5, with: NSAttributedString(string: "!"))
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XCTAssertEqual(l.length, 6)
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}
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func test_firstLineBaselineFromTop_nilForEmptyText() {
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XCTAssertNil(layout("").firstLineBaselineFromTop)
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}
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private func baselineLayout(multiple: CGFloat) -> BlockLayout {
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let ps = NSMutableParagraphStyle(); ps.lineHeightMultiple = multiple
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return BlockLayout(attributedString: NSAttributedString(string: "Hi",
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attributes: [.font: UIFont.systemFont(ofSize: 16), .paragraphStyle: ps]), width: 300)
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}
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func test_firstLineBaselineFromTop_growsWithLineHeightMultiple() {
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// A larger line-height multiple pushes the first line's baseline further below the top — this is
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// exactly the shift that the list marker must follow to stay aligned with the text.
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let plain = baselineLayout(multiple: 1.0).firstLineBaselineFromTop ?? 0
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let tall = baselineLayout(multiple: 1.5).firstLineBaselineFromTop ?? 0
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XCTAssertGreaterThan(tall, plain)
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}
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}
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#endif
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