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// 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 = TextStyle(
fontFamily: 'Ahem',
fontSize: 10.0,
letterSpacing: 0.0,
);
void main() {
testWidgets('Default layout minimum size', (WidgetTester tester) async {
await tester.pumpWidget(
boilerplate(child: const CupertinoButton(
child: 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: 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: 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: Text('X', style: testStyle),
onPressed: null,
color: 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: Text('X', style: testStyle),
onPressed: null,
padding: 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(
StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return boilerplate(
child: 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: 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: 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: 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 = SemanticsTester(tester);
await tester.pumpWidget(
boilerplate(
child: Center(
child: CupertinoButton(
onPressed: () { },
child: const Text('ABC'),
),
),
),
);
expect(semantics, hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics.rootChild(
actions: SemanticsAction.tap.index,
label: 'ABC',
flags: SemanticsFlag.isButton.index,
),
],
),
ignoreId: true,
ignoreRect: true,
ignoreTransform: true,
));
semantics.dispose();
});
testWidgets('Can specify colors', (WidgetTester tester) async {
await tester.pumpWidget(boilerplate(child: CupertinoButton(
child: const Text('Skeuomorph me'),
color: const Color(0x0000FF),
disabledColor: const Color(0x00FF00),
onPressed: () { },
)));
BoxDecoration boxDecoration = tester.widget<DecoratedBox>(
find.widgetWithText(DecoratedBox, 'Skeuomorph me')
).decoration;
expect(boxDecoration.color, const Color(0x0000FF));
await tester.pumpWidget(boilerplate(child: const CupertinoButton(
child: Text('Skeuomorph me'),
color: Color(0x0000FF),
disabledColor: Color(0x00FF00),
onPressed: null,
)));
boxDecoration = tester.widget<DecoratedBox>(
find.widgetWithText(DecoratedBox, 'Skeuomorph me')
).decoration;
expect(boxDecoration.color, const Color(0x00FF00));
});
testWidgets('Button respects themes', (WidgetTester tester) async {
TextStyle textStyle;
await tester.pumpWidget(
CupertinoApp(
home: CupertinoButton(
onPressed: () { },
child: Builder(builder: (BuildContext context) {
textStyle = DefaultTextStyle.of(context).style;
return const Placeholder();
}),
),
),
);
expect(textStyle.color, CupertinoColors.activeBlue);
await tester.pumpWidget(
CupertinoApp(
home: CupertinoButton.filled(
onPressed: () { },
child: Builder(builder: (BuildContext context) {
textStyle = DefaultTextStyle.of(context).style;
return const Placeholder();
}),
),
),
);
expect(textStyle.color, CupertinoColors.white);
BoxDecoration decoration = tester.widget<DecoratedBox>(
find.descendant(
of: find.byType(CupertinoButton),
matching: find.byType(DecoratedBox),
)
).decoration;
expect(decoration.color, CupertinoColors.activeBlue);
await tester.pumpWidget(
CupertinoApp(
theme: const CupertinoThemeData(brightness: Brightness.dark),
home: CupertinoButton(
onPressed: () { },
child: Builder(builder: (BuildContext context) {
textStyle = DefaultTextStyle.of(context).style;
return const Placeholder();
}),
),
),
);
expect(textStyle.color, CupertinoColors.activeOrange);
await tester.pumpWidget(
CupertinoApp(
theme: const CupertinoThemeData(brightness: Brightness.dark),
home: CupertinoButton.filled(
onPressed: () { },
child: Builder(builder: (BuildContext context) {
textStyle = DefaultTextStyle.of(context).style;
return const Placeholder();
}),
),
),
);
expect(textStyle.color, CupertinoColors.black);
decoration = tester.widget<DecoratedBox>(
find.descendant(
of: find.byType(CupertinoButton),
matching: find.byType(DecoratedBox),
)
).decoration;
expect(decoration.color, CupertinoColors.activeOrange);
});
}
Widget boilerplate({ Widget child }) {
return Directionality(
textDirection: TextDirection.ltr,
child: Center(child: child),
);
}