| // Copyright 2015 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_test/flutter_test.dart'; |
| import 'package:flutter/widgets.dart'; |
| |
| void main() { |
| testWidgets('Directionality', (WidgetTester tester) async { |
| final List<TextDirection> log = <TextDirection>[]; |
| final Widget inner = new Builder( |
| builder: (BuildContext context) { |
| log.add(Directionality.of(context)); |
| return const Placeholder(); |
| } |
| ); |
| await tester.pumpWidget( |
| new Directionality( |
| textDirection: TextDirection.ltr, |
| child: inner, |
| ), |
| ); |
| expect(log, <TextDirection>[TextDirection.ltr]); |
| await tester.pumpWidget( |
| new Directionality( |
| textDirection: TextDirection.ltr, |
| child: inner, |
| ), |
| ); |
| expect(log, <TextDirection>[TextDirection.ltr]); |
| await tester.pumpWidget( |
| new Directionality( |
| textDirection: TextDirection.rtl, |
| child: inner, |
| ), |
| ); |
| expect(log, <TextDirection>[TextDirection.ltr, TextDirection.rtl]); |
| await tester.pumpWidget( |
| new Directionality( |
| textDirection: TextDirection.rtl, |
| child: inner, |
| ), |
| ); |
| expect(log, <TextDirection>[TextDirection.ltr, TextDirection.rtl]); |
| await tester.pumpWidget( |
| new Directionality( |
| textDirection: TextDirection.ltr, |
| child: inner, |
| ), |
| ); |
| expect(log, <TextDirection>[TextDirection.ltr, TextDirection.rtl, TextDirection.ltr]); |
| }); |
| |
| testWidgets('Directionality default', (WidgetTester tester) async { |
| bool good = false; |
| await tester.pumpWidget(new Builder( |
| builder: (BuildContext context) { |
| expect(Directionality.of(context), isNull); |
| good = true; |
| return const Placeholder(); |
| }, |
| )); |
| expect(good, isTrue); |
| }); |
| |
| testWidgets('Directionality can\'t be null', (WidgetTester tester) async { |
| expect(() { |
| new Directionality(textDirection: nonconst(null), child: const Placeholder()); |
| }, throwsAssertionError); |
| }); |
| } |