72 lines
2.1 KiB
Dart
72 lines
2.1 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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void main() {
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testWidgets('Directionality', (WidgetTester tester) async {
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final List<TextDirection> log = <TextDirection>[];
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final Widget inner = new Builder(
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builder: (BuildContext context) {
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log.add(Directionality.of(context));
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return const Placeholder();
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}
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);
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await tester.pumpWidget(
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new Directionality(
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textDirection: TextDirection.ltr,
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child: inner,
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),
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);
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expect(log, <TextDirection>[TextDirection.ltr]);
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await tester.pumpWidget(
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new Directionality(
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textDirection: TextDirection.ltr,
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child: inner,
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),
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);
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expect(log, <TextDirection>[TextDirection.ltr]);
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await tester.pumpWidget(
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new Directionality(
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textDirection: TextDirection.rtl,
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child: inner,
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),
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);
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expect(log, <TextDirection>[TextDirection.ltr, TextDirection.rtl]);
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await tester.pumpWidget(
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new Directionality(
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textDirection: TextDirection.rtl,
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child: inner,
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),
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);
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expect(log, <TextDirection>[TextDirection.ltr, TextDirection.rtl]);
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await tester.pumpWidget(
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new Directionality(
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textDirection: TextDirection.ltr,
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child: inner,
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),
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);
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expect(log, <TextDirection>[TextDirection.ltr, TextDirection.rtl, TextDirection.ltr]);
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});
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testWidgets('Directionality default', (WidgetTester tester) async {
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bool good = false;
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await tester.pumpWidget(new Builder(
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builder: (BuildContext context) {
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expect(Directionality.of(context), isNull);
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good = true;
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return const Placeholder();
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},
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));
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expect(good, isTrue);
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});
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testWidgets('Directionality can\'t be null', (WidgetTester tester) async {
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expect(() {
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new Directionality(textDirection: nonconst(null), child: const Placeholder());
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}, throwsAssertionError);
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});
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}
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