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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>
66 lines
4.0 KiB
Swift
66 lines
4.0 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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import RichTextEditorCore
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/// Proves the TextKit-1 `EmojiTextAttachment.attachmentBounds(for:proposedLineFragment:glyphPosition:
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/// characterIndex:)` override sizes the emoji box correctly under `BlockLayoutTK1` — the TK1 analog of
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/// `EmojiMapperTests.test_attachmentBox_squareSizedAndCenteredOnGlyph` (which exercises the TK2 path).
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final class BlockLayoutTK1EmojiTests: XCTestCase {
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private let mapper = AttributedStringMapper()
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private func ref() -> EmojiRef { EmojiRef(id: "star", instanceID: "i1", altText: ":star:") }
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func test_tk1_attachmentBox_squareSizedToGlyphPlusBoost() {
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for style in [ParagraphStyleName.body, .heading1, .heading2, .heading3] {
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let font = mapper.styleSheet.font(for: style, attributes: CharacterAttributes())
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let boost: CGFloat = style == .body ? 4 : 0
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let block = ParagraphBlock(id: BlockID("e"), style: style, runs: [
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TextRun(text: "Agjy"),
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TextRun(text: "\u{FFFC}", attributes: CharacterAttributes(emoji: ref())),
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])
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let layout = BlockLayoutTK1(attributedString: mapper.attributedString(for: block), width: 320)
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guard let box = layout.attachmentBox(at: 4) else {
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XCTFail("emoji must have a positioned box (\(style))"); continue
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}
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let glyphSide = font.ascender - font.descender
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XCTAssertEqual(box.width, box.height, accuracy: 0.01, "square (\(style))")
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XCTAssertEqual(box.width, glyphSide + boost, accuracy: 0.5, "side = glyph + boost (\(style))")
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}
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}
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/// The hosted emoji box must sit on the SAME baseline TextKit 1 DRAWS the neighbouring text at — which is
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/// the corrected baseline (raw `location(forGlyphAt:)` − `baselineDelta`), since both engines place the
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/// first baseline at the font's ascender (the text glyphs and the emoji shift up together). Reference =
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/// `lineFragmentRect.minY + location(forGlyphAt: 0).y − baselineDelta` (glyph 0 = "A"). For a no-boost
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/// style the box spans baseline−ascender … baseline−descender (a glyph cell).
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func test_tk1_emoji_sitsOnTextBaseline() {
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for style in [ParagraphStyleName.heading1, .caption, .heading2] { // boost == 0 styles
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let font = mapper.styleSheet.font(for: style, attributes: CharacterAttributes())
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let block = ParagraphBlock(id: BlockID("e"), style: style, runs: [
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TextRun(text: "Agjy"),
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TextRun(text: "\u{FFFC}", attributes: CharacterAttributes(emoji: ref())),
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])
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let l = BlockLayoutTK1(attributedString: mapper.attributedString(for: block), width: 320)
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guard let box = l.attachmentBox(at: 4) else { XCTFail("no box (\(style))"); continue }
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let lm = l.layoutManager
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let lineRect = lm.lineFragmentRect(forGlyphAt: 0, effectiveRange: nil)
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let textBaseline = lineRect.minY + lm.location(forGlyphAt: 0).y - l.baselineDelta
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XCTAssertEqual(box.minY, textBaseline - font.ascender, accuracy: 0.5, "box top = baseline−ascender (\(style))")
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XCTAssertEqual(box.maxY, textBaseline - font.descender, accuracy: 0.5, "box bottom = baseline−descender (\(style))")
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}
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}
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func test_tk1_bodyEmoji_doesNotExpandLine() {
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let emoji = ParagraphBlock(id: BlockID("e"), style: .body, runs: [
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TextRun(text: "Agjy"),
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TextRun(text: "\u{FFFC}", attributes: CharacterAttributes(emoji: ref())),
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])
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let text = ParagraphBlock(id: BlockID("t"), style: .body, runs: [TextRun(text: "Agjy")])
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let hEmoji = BlockLayoutTK1(attributedString: mapper.attributedString(for: emoji), width: 320).boundingHeight
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let hText = BlockLayoutTK1(attributedString: mapper.attributedString(for: text), width: 320).boundingHeight
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XCTAssertEqual(hEmoji, hText, accuracy: 0.01, "the +4pt body boost must not expand the line")
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}
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}
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#endif
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