| // Copyright 2017 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/rendering.dart'; |
| import 'package:flutter/cupertino.dart'; |
| import 'package:flutter/scheduler.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| import '../widgets/semantics_tester.dart'; |
| |
| const TextStyle testStyle = const TextStyle( |
| fontFamily: 'Ahem', |
| fontSize: 10.0, |
| ); |
| |
| void main() { |
| testWidgets('Default layout minimum size', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| boilerplate(child: const CupertinoButton( |
| child: const Text('X', style: testStyle), |
| onPressed: null, |
| )) |
| ); |
| final RenderBox buttonBox = tester.renderObject(find.byType(CupertinoButton)); |
| expect( |
| buttonBox.size, |
| // 1 10px character + 16px * 2 is smaller than the default 44px minimum. |
| const Size.square(44.0), |
| ); |
| }); |
| |
| testWidgets('Minimum size parameter', (WidgetTester tester) async { |
| const double minSize = 60.0; |
| await tester.pumpWidget( |
| boilerplate(child: const CupertinoButton( |
| child: const Text('X', style: testStyle), |
| onPressed: null, |
| minSize: minSize, |
| )) |
| ); |
| final RenderBox buttonBox = tester.renderObject(find.byType(CupertinoButton)); |
| expect( |
| buttonBox.size, |
| // 1 10px character + 16px * 2 is smaller than defined 60.0px minimum |
| const Size.square(minSize), |
| ); |
| }); |
| |
| testWidgets('Size grows with text', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| boilerplate(child: const CupertinoButton( |
| child: const Text('XXXX', style: testStyle), |
| onPressed: null, |
| )) |
| ); |
| final RenderBox buttonBox = tester.renderObject(find.byType(CupertinoButton)); |
| expect( |
| buttonBox.size.width, |
| // 4 10px character + 16px * 2 = 72. |
| 72.0, |
| ); |
| }); |
| |
| testWidgets('Button with background is wider', (WidgetTester tester) async { |
| await tester.pumpWidget(boilerplate(child: const CupertinoButton( |
| child: const Text('X', style: testStyle), |
| onPressed: null, |
| color: const Color(0xFFFFFFFF), |
| ))); |
| final RenderBox buttonBox = tester.renderObject(find.byType(CupertinoButton)); |
| expect( |
| buttonBox.size.width, |
| // 1 10px character + 64 * 2 = 138 for buttons with background. |
| 138.0, |
| ); |
| }); |
| |
| testWidgets('Custom padding', (WidgetTester tester) async { |
| await tester.pumpWidget(boilerplate(child: const CupertinoButton( |
| child: const Text('X', style: testStyle), |
| onPressed: null, |
| padding: const EdgeInsets.all(100.0), |
| ))); |
| final RenderBox buttonBox = tester.renderObject(find.byType(CupertinoButton)); |
| expect( |
| buttonBox.size, |
| const Size.square(210.0), |
| ); |
| }); |
| |
| testWidgets('Button takes taps', (WidgetTester tester) async { |
| bool value = false; |
| await tester.pumpWidget( |
| new StatefulBuilder( |
| builder: (BuildContext context, StateSetter setState) { |
| return boilerplate( |
| child: new CupertinoButton( |
| child: const Text('Tap me'), |
| onPressed: () { |
| setState(() { |
| value = true; |
| }); |
| }, |
| ), |
| ); |
| }, |
| ), |
| ); |
| |
| expect(value, isFalse); |
| // No animating by default. |
| expect(SchedulerBinding.instance.transientCallbackCount, equals(0)); |
| await tester.tap(find.byType(CupertinoButton)); |
| expect(value, isTrue); |
| // Animates. |
| expect(SchedulerBinding.instance.transientCallbackCount, equals(1)); |
| }); |
| |
| testWidgets('Disabled button doesn\'t animate', (WidgetTester tester) async { |
| await tester.pumpWidget(boilerplate(child: const CupertinoButton( |
| child: const Text('Tap me'), |
| onPressed: null, |
| ))); |
| expect(SchedulerBinding.instance.transientCallbackCount, equals(0)); |
| await tester.tap(find.byType(CupertinoButton)); |
| // Still doesn't animate. |
| expect(SchedulerBinding.instance.transientCallbackCount, equals(0)); |
| }); |
| |
| testWidgets('pressedOpacity defaults to 0.1', (WidgetTester tester) async { |
| await tester.pumpWidget(boilerplate(child: new CupertinoButton( |
| child: const Text('Tap me'), |
| onPressed: () { }, |
| ))); |
| |
| // Keep a "down" gesture on the button |
| final Offset center = tester.getCenter(find.byType(CupertinoButton)); |
| await tester.startGesture(center); |
| await tester.pumpAndSettle(); |
| |
| // Check opacity |
| final FadeTransition opacity = tester.widget(find.descendant( |
| of: find.byType(CupertinoButton), |
| matching: find.byType(FadeTransition), |
| )); |
| expect(opacity.opacity.value, 0.1); |
| }); |
| |
| testWidgets('pressedOpacity parameter', (WidgetTester tester) async { |
| const double pressedOpacity = 0.5; |
| await tester.pumpWidget(boilerplate(child: new CupertinoButton( |
| pressedOpacity: pressedOpacity, |
| child: const Text('Tap me'), |
| onPressed: () { }, |
| ))); |
| |
| // Keep a "down" gesture on the button |
| final Offset center = tester.getCenter(find.byType(CupertinoButton)); |
| await tester.startGesture(center); |
| await tester.pumpAndSettle(); |
| |
| // Check opacity |
| final FadeTransition opacity = tester.widget(find.descendant( |
| of: find.byType(CupertinoButton), |
| matching: find.byType(FadeTransition), |
| )); |
| expect(opacity.opacity.value, pressedOpacity); |
| }); |
| |
| testWidgets('Cupertino button is semantically a button', (WidgetTester tester) async { |
| final SemanticsTester semantics = new SemanticsTester(tester); |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Center( |
| child: new CupertinoButton( |
| onPressed: () { }, |
| child: const Text('ABC') |
| ), |
| ), |
| ), |
| ); |
| |
| expect(semantics, hasSemantics( |
| new TestSemantics.root( |
| children: <TestSemantics>[ |
| new TestSemantics.rootChild( |
| actions: SemanticsAction.tap.index, |
| label: 'ABC', |
| flags: SemanticsFlag.isButton.index, |
| ) |
| ], |
| ), |
| ignoreId: true, |
| ignoreRect: true, |
| ignoreTransform: true, |
| )); |
| |
| semantics.dispose(); |
| }); |
| } |
| |
| Widget boilerplate({ Widget child }) { |
| return new Directionality( |
| textDirection: TextDirection.ltr, |
| child: new Center(child: child), |
| ); |
| } |