// Copyright 2016 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter_markdown/flutter_markdown.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:flutter/gestures.dart'; import 'package:flutter/widgets.dart'; import 'package:flutter/material.dart'; void main() { testWidgets('Simple string', (WidgetTester tester) { tester.pumpWidget(new MarkdownBody(data: 'Hello')); Iterable<Widget> widgets = tester.allWidgets; _expectWidgetTypes(widgets, <Type>[MarkdownBody, Column, Container, Padding, RichText]); _expectTextStrings(widgets, <String>['Hello']); }); testWidgets('Header', (WidgetTester tester) { tester.pumpWidget(new MarkdownBody(data: '# Header')); Iterable<Widget> widgets = tester.allWidgets; _expectWidgetTypes(widgets, <Type>[MarkdownBody, Column, Container, Padding, RichText]); _expectTextStrings(widgets, <String>['Header']); }); testWidgets('Empty string', (WidgetTester tester) { tester.pumpWidget(new MarkdownBody(data: '')); Iterable<Widget> widgets = tester.allWidgets; _expectWidgetTypes(widgets, <Type>[MarkdownBody, Column]); }); testWidgets('Ordered list', (WidgetTester tester) { tester.pumpWidget(new MarkdownBody(data: '1. Item 1\n1. Item 2\n2. Item 3')); Iterable<Widget> widgets = tester.allWidgets; _expectTextStrings(widgets, <String>[ '1.', 'Item 1', '2.', 'Item 2', '3.', 'Item 3'] ); }); testWidgets('Unordered list', (WidgetTester tester) { tester.pumpWidget(new MarkdownBody(data: '- Item 1\n- Item 2\n- Item 3')); Iterable<Widget> widgets = tester.allWidgets; _expectTextStrings(widgets, <String>[ '•', 'Item 1', '•', 'Item 2', '•', 'Item 3'] ); }); testWidgets('Scrollable wrapping', (WidgetTester tester) { tester.pumpWidget(new Markdown(data: '')); List<Widget> widgets = tester.allWidgets.toList(); _expectWidgetTypes(widgets.take(2), <Type>[ Markdown, ScrollableViewport, ]); _expectWidgetTypes(widgets.reversed.take(3).toList().reversed, <Type>[ Padding, MarkdownBody, Column ]); }); testWidgets('Links', (WidgetTester tester) { tester.pumpWidget(new Markdown(data: '[Link Text](href)')); RichText textWidget = tester.allWidgets.firstWhere((Widget widget) => widget is RichText); TextSpan span = textWidget.text; expect(span.children[0].recognizer.runtimeType, equals(TapGestureRecognizer)); }); testWidgets('Changing config - data', (WidgetTester tester) { tester.pumpWidget(new Markdown(data: 'Data1')); _expectTextStrings(tester.allWidgets, <String>['Data1']); String stateBefore = WidgetsBinding.instance.renderViewElement.toStringDeep(); tester.pumpWidget(new Markdown(data: 'Data1')); String stateAfter = WidgetsBinding.instance.renderViewElement.toStringDeep(); expect(stateBefore, equals(stateAfter)); tester.pumpWidget(new Markdown(data: 'Data2')); _expectTextStrings(tester.allWidgets, <String>['Data2']); }); testWidgets('Changing config - style', (WidgetTester tester) { ThemeData theme = new ThemeData.light(); MarkdownStyle style1 = new MarkdownStyle.defaultFromTheme(theme); MarkdownStyle style2 = new MarkdownStyle.largeFromTheme(theme); tester.pumpWidget(new Markdown(data: 'Test', markdownStyle: style1)); String stateBefore = WidgetsBinding.instance.renderViewElement.toStringDeep(); tester.pumpWidget(new Markdown(data: 'Test', markdownStyle: style2)); String stateAfter = WidgetsBinding.instance.renderViewElement.toStringDeep(); expect(stateBefore, isNot(stateAfter)); }); } void _expectWidgetTypes(Iterable<Widget> widgets, List<Type> expected) { List<Type> actual = widgets.map((Widget w) => w.runtimeType).toList(); expect(actual, expected); } void _expectTextStrings(Iterable<Widget> widgets, List<String> strings) { int currentString = 0; for (Widget widget in widgets) { if (widget is RichText) { TextSpan span = widget.text; String text = _extractTextFromTextSpan(span); expect(text, equals(strings[currentString])); currentString += 1; } } } String _extractTextFromTextSpan(TextSpan span) { String text = span.text ?? ''; if (span.children != null) { for (TextSpan child in span.children) { text += _extractTextFromTextSpan(child); } } return text; }