169a7a8bff
The free-Markdown slide preview now parses block-level content: - ```lang fenced code blocks render with highlight.js colouring (flutter_highlight); unknown languages fall back to plain monospace instead of throwing. - $$…$$ display math renders via flutter_math_fork (KaTeX), with a plain fallback on parse errors. Because the preview feeds the export rasterizer, code and math now also appear in PDF/PPTX output. Adds flutter_highlight, flutter_math_fork and highlight dependencies. Tests: code block highlighted, math rendered, unknown language safe. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
53 lines
1.7 KiB
Dart
53 lines
1.7 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_highlight/flutter_highlight.dart';
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import 'package:flutter_math_fork/flutter_math.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:ocideck/models/slide.dart';
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import 'package:ocideck/widgets/slides/slide_preview.dart';
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Widget _host(Slide slide) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: SizedBox(
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width: 800,
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height: 450,
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child: SlidePreviewWidget(slide: slide),
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),
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),
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);
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}
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void main() {
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testWidgets('free Markdown renders a highlighted code block', (tester) async {
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final slide = Slide.create(SlideType.freeMarkdown).copyWith(
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customMarkdown: '# Demo\n\n```dart\nvoid main() => print(42);\n```\n',
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);
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await tester.pumpWidget(_host(slide));
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expect(find.byType(HighlightView), findsOneWidget);
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});
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testWidgets('free Markdown renders display math', (tester) async {
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final slide = Slide.create(SlideType.freeMarkdown).copyWith(
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customMarkdown: 'Stelling:\n\n\$\$E = mc^2\$\$\n',
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);
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await tester.pumpWidget(_host(slide));
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expect(find.byType(Math), findsOneWidget);
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});
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testWidgets('an unknown code language falls back without throwing', (
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tester,
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) async {
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final slide = Slide.create(SlideType.freeMarkdown).copyWith(
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customMarkdown: '```nonexistentlang\nsome code\n```\n',
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);
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await tester.pumpWidget(_host(slide));
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// No HighlightView (unknown language) and no exception during build.
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expect(find.byType(HighlightView), findsNothing);
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expect(tester.takeException(), isNull);
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expect(find.text('some code'), findsOneWidget);
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});
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}
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