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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.8
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('Custom background color respected', (WidgetTester tester) async {
const Color color = Colors.pink;
await tester.pumpWidget(
MaterialApp(
home: MaterialBanner(
backgroundColor: color,
content: const Text('I am a banner'),
actions: <Widget>[
FlatButton(
child: const Text('Action'),
onPressed: () { },
),
],
),
),
);
final Container container = _getContainerFromBanner(tester);
expect(container.color, color);
});
testWidgets('Custom content TextStyle respected', (WidgetTester tester) async {
const String contentText = 'Content';
const TextStyle contentTextStyle = TextStyle(color: Colors.pink);
await tester.pumpWidget(
MaterialApp(
home: MaterialBanner(
contentTextStyle: contentTextStyle,
content: const Text(contentText),
actions: <Widget>[
FlatButton(
child: const Text('Action'),
onPressed: () { },
),
],
),
),
);
final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
expect(content.text.style, contentTextStyle);
});
testWidgets('Actions laid out below content if more than one action', (WidgetTester tester) async {
const String contentText = 'Content';
await tester.pumpWidget(
MaterialApp(
home: MaterialBanner(
content: const Text(contentText),
actions: <Widget>[
FlatButton(
child: const Text('Action 1'),
onPressed: () { },
),
FlatButton(
child: const Text('Action 2'),
onPressed: () { },
),
],
),
),
);
final Offset contentBottomLeft = tester.getBottomLeft(find.text(contentText));
final Offset actionsTopRight = tester.getTopLeft(find.byType(ButtonBar));
expect(contentBottomLeft.dy, lessThan(actionsTopRight.dy));
expect(contentBottomLeft.dx, greaterThan(actionsTopRight.dx));
});
testWidgets('Actions laid out beside content if only one action', (WidgetTester tester) async {
const String contentText = 'Content';
await tester.pumpWidget(
MaterialApp(
home: MaterialBanner(
content: const Text(contentText),
actions: <Widget>[
FlatButton(
child: const Text('Action'),
onPressed: () { },
),
],
),
),
);
final Offset contentBottomLeft = tester.getBottomLeft(find.text(contentText));
final Offset actionsTopRight = tester.getTopRight(find.byType(ButtonBar));
expect(contentBottomLeft.dy, greaterThan(actionsTopRight.dy));
expect(contentBottomLeft.dx, lessThan(actionsTopRight.dx));
});
// Regression test for https://github.com/flutter/flutter/issues/39574
testWidgets('Single action laid out beside content but aligned to the trailing edge', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: MaterialBanner(
content: const Text('Content'),
actions: <Widget>[
FlatButton(
child: const Text('Action'),
onPressed: () { },
),
],
),
),
);
final Offset actionsTopRight = tester.getTopRight(find.byType(ButtonBar));
final Offset bannerTopRight = tester.getTopRight(find.byType(MaterialBanner));
expect(actionsTopRight.dx, bannerTopRight.dx);
});
// Regression test for https://github.com/flutter/flutter/issues/39574
testWidgets('Single action laid out beside content but aligned to the trailing edge - RTL', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.rtl,
child: MaterialBanner(
content: const Text('Content'),
actions: <Widget>[
FlatButton(
child: const Text('Action'),
onPressed: () { },
),
],
),
),
),
);
final Offset actionsTopLeft = tester.getTopLeft(find.byType(ButtonBar));
final Offset bannerTopLeft = tester.getTopLeft(find.byType(MaterialBanner));
expect(actionsTopLeft.dx, bannerTopLeft.dx);
});
testWidgets('Actions laid out below content if forced override', (WidgetTester tester) async {
const String contentText = 'Content';
await tester.pumpWidget(
MaterialApp(
home: MaterialBanner(
forceActionsBelow: true,
content: const Text(contentText),
actions: <Widget>[
FlatButton(
child: const Text('Action'),
onPressed: () { },
),
],
),
),
);
final Offset contentBottomLeft = tester.getBottomLeft(find.text(contentText));
final Offset actionsTopRight = tester.getTopLeft(find.byType(ButtonBar));
expect(contentBottomLeft.dy, lessThan(actionsTopRight.dy));
expect(contentBottomLeft.dx, greaterThan(actionsTopRight.dx));
});
}
Container _getContainerFromBanner(WidgetTester tester) {
return tester.widget<Container>(find.descendant(of: find.byType(MaterialBanner), matching: find.byType(Container)).first);
}
RenderParagraph _getTextRenderObjectFromDialog(WidgetTester tester, String text) {
return tester.element<StatelessElement>(find.descendant(of: find.byType(MaterialBanner), matching: find.text(text))).renderObject as RenderParagraph;
}