| // 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. |
| |
| import 'package:flutter/foundation.dart' show FlutterExceptionHandler; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('SnackBar control test', (WidgetTester tester) async { |
| const String helloSnackBar = 'Hello SnackBar'; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(const SnackBar( |
| content: Text(helloSnackBar), |
| duration: Duration(seconds: 2), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text(helloSnackBar), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); |
| expect(find.text(helloSnackBar), findsNothing); |
| await tester.pump(); // schedule animation |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.00s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text(helloSnackBar), findsOneWidget); // frame 0 of dismiss animation |
| await tester.pump(const Duration(milliseconds: 750)); // 3.75s // last frame of animation, snackbar removed from build |
| expect(find.text(helloSnackBar), findsNothing); |
| }); |
| |
| testWidgets('SnackBar control test - ScaffoldMessenger', (WidgetTester tester) async { |
| const String helloSnackBar = 'Hello SnackBar'; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(const SnackBar( |
| content: Text(helloSnackBar), |
| duration: Duration(seconds: 2), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text(helloSnackBar), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); |
| expect(find.text(helloSnackBar), findsNothing); |
| await tester.pump(); // schedule animation |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.00s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text(helloSnackBar), findsOneWidget); // frame 0 of dismiss animation |
| await tester.pump(const Duration(milliseconds: 750)); // 3.75s // last frame of animation, snackbar removed from build |
| expect(find.text(helloSnackBar), findsNothing); |
| }); |
| |
| testWidgets('SnackBar twice test', (WidgetTester tester) async { |
| int snackBarCount = 0; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| snackBarCount += 1; |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: Text('bar$snackBarCount'), |
| duration: const Duration(seconds: 2), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); // queue bar1 |
| await tester.tap(find.byKey(tapTarget)); // queue bar2 |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // schedule animation for bar1 |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.00s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.75s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 4.50s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 5.25s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 6.00s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 6.75s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 7.50s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| }); |
| |
| testWidgets('SnackBar twice test - ScaffoldMessenger', (WidgetTester tester) async { |
| int snackBarCount = 0; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| snackBarCount += 1; |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: Text('bar$snackBarCount'), |
| duration: const Duration(seconds: 2), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); // queue bar1 |
| await tester.tap(find.byKey(tapTarget)); // queue bar2 |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // schedule animation for bar1 |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.00s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.75s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 4.50s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 5.25s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 6.00s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 6.75s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 7.50s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| }); |
| |
| testWidgets('SnackBar cancel test', (WidgetTester tester) async { |
| int snackBarCount = 0; |
| const Key tapTarget = Key('tap-target'); |
| late int time; |
| late ScaffoldFeatureController<SnackBar, SnackBarClosedReason> lastController; |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| snackBarCount += 1; |
| lastController = Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: Text('bar$snackBarCount'), |
| duration: Duration(seconds: time), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| time = 1000; |
| await tester.tap(find.byKey(tapTarget)); // queue bar1 |
| final ScaffoldFeatureController<SnackBar, SnackBarClosedReason> firstController = lastController; |
| time = 2; |
| await tester.tap(find.byKey(tapTarget)); // queue bar2 |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // schedule animation for bar1 |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 10000)); // 12.25s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| |
| firstController.close(); // snackbar is manually dismissed |
| |
| await tester.pump(const Duration(milliseconds: 750)); // 13.00s // reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 13.75s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 14.50s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 15.25s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 16.00s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 16.75s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 17.50s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| }); |
| |
| testWidgets('SnackBar cancel test - ScaffoldMessenger', (WidgetTester tester) async { |
| int snackBarCount = 0; |
| const Key tapTarget = Key('tap-target'); |
| late int time; |
| late ScaffoldFeatureController<SnackBar, SnackBarClosedReason> lastController; |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| snackBarCount += 1; |
| lastController = ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: Text('bar$snackBarCount'), |
| duration: Duration(seconds: time), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| time = 1000; |
| await tester.tap(find.byKey(tapTarget)); // queue bar1 |
| final ScaffoldFeatureController<SnackBar, SnackBarClosedReason> firstController = lastController; |
| time = 2; |
| await tester.tap(find.byKey(tapTarget)); // queue bar2 |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // schedule animation for bar1 |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 10000)); // 12.25s |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| |
| firstController.close(); // snackbar is manually dismissed |
| |
| await tester.pump(const Duration(milliseconds: 750)); // 13.00s // reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 13.75s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 14.50s // animation last frame; two second timer starts here |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 15.25s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 16.00s |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 16.75s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 17.50s // last frame of animation, snackbar removed from build, new snack bar put in its place |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| }); |
| |
| testWidgets('SnackBar dismiss test', (WidgetTester tester) async { |
| int snackBarCount = 0; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| snackBarCount += 1; |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: Text('bar$snackBarCount'), |
| duration: const Duration(seconds: 2), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); // queue bar1 |
| await tester.tap(find.byKey(tapTarget)); // queue bar2 |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // schedule animation for bar1 |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| await tester.drag(find.text('bar1'), const Offset(0.0, 50.0)); |
| await tester.pump(); // bar1 dismissed, bar2 begins animating |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| }); |
| |
| testWidgets('SnackBar dismiss test - ScaffoldMessenger', (WidgetTester tester) async { |
| int snackBarCount = 0; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| snackBarCount += 1; |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: Text('bar$snackBarCount'), |
| duration: const Duration(seconds: 2), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); // queue bar1 |
| await tester.tap(find.byKey(tapTarget)); // queue bar2 |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // schedule animation for bar1 |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(); // begin animation |
| expect(find.text('bar1'), findsOneWidget); |
| expect(find.text('bar2'), findsNothing); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; two second timer starts here |
| await tester.drag(find.text('bar1'), const Offset(0.0, 50.0)); |
| await tester.pump(); // bar1 dismissed, bar2 begins animating |
| expect(find.text('bar1'), findsNothing); |
| expect(find.text('bar2'), findsOneWidget); |
| }); |
| |
| testWidgets('SnackBar cannot be tapped twice', (WidgetTester tester) async { |
| int tapCount = 0; |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { |
| ++tapCount; |
| }, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| expect(tapCount, equals(0)); |
| await tester.tap(find.text('ACTION')); |
| expect(tapCount, equals(1)); |
| await tester.tap(find.text('ACTION')); |
| expect(tapCount, equals(1)); |
| await tester.pump(); |
| await tester.tap(find.text('ACTION')); |
| expect(tapCount, equals(1)); |
| }); |
| |
| testWidgets('SnackBar cannot be tapped twice - ScaffoldMessenger', (WidgetTester tester) async { |
| int tapCount = 0; |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { |
| ++tapCount; |
| }, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| expect(tapCount, equals(0)); |
| await tester.tap(find.text('ACTION')); |
| expect(tapCount, equals(1)); |
| await tester.tap(find.text('ACTION')); |
| expect(tapCount, equals(1)); |
| await tester.pump(); |
| await tester.tap(find.text('ACTION')); |
| expect(tapCount, equals(1)); |
| }); |
| |
| testWidgets('Light theme SnackBar has dark background', (WidgetTester tester) async { |
| final ThemeData lightTheme = ThemeData.light(); |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: lightTheme, |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar( |
| SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final RenderPhysicalModel renderModel = tester.renderObject( |
| find.widgetWithText(Material, 'I am a snack bar.').first |
| ); |
| // There is a somewhat complicated background color calculation based |
| // off of the surface color. For the default light theme it |
| // should be this value. |
| expect(renderModel.color, equals(const Color(0xFF333333))); |
| }); |
| |
| testWidgets('Dark theme SnackBar has light background', (WidgetTester tester) async { |
| final ThemeData darkTheme = ThemeData.dark(); |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: darkTheme, |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar( |
| SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final RenderPhysicalModel renderModel = tester.renderObject( |
| find.widgetWithText(Material, 'I am a snack bar.').first |
| ); |
| expect(renderModel.color, equals(darkTheme.colorScheme.onSurface)); |
| }); |
| |
| testWidgets('Snackbar margin can be customized', (WidgetTester tester) async { |
| const double padding = 20.0; |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar( |
| SnackBar( |
| content: const Text('I am a snack bar.'), |
| margin: const EdgeInsets.all(padding), |
| behavior: SnackBarBehavior.floating, |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final Finder materialFinder = find.descendant( |
| of: find.byType(SnackBar), |
| matching: find.byType(Material), |
| ); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(materialFinder); |
| final Offset snackBarBottomRight = tester.getBottomRight(materialFinder); |
| expect(snackBarBottomLeft.dx, padding); |
| expect(snackBarBottomLeft.dy, 600 - padding); // Device height is 600. |
| expect(snackBarBottomRight.dx, 800 - padding); // Device width is 800. |
| }); |
| |
| testWidgets('SnackbarBehavior.floating is positioned within safe area', (WidgetTester tester) async { |
| const double viewPadding = 50.0; |
| const double floatingSnackBarDefaultBottomMargin = 10.0; |
| await tester.pumpWidget( |
| MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData( |
| // Simulate non-safe area. |
| viewPadding: EdgeInsets.only(bottom: viewPadding), |
| ), |
| child: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar( |
| const SnackBar( |
| content: Text('I am a snack bar.'), |
| behavior: SnackBarBehavior.floating, |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // Start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final Finder materialFinder = find.descendant( |
| of: find.byType(SnackBar), |
| matching: find.byType(Material), |
| ); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(materialFinder); |
| expect( |
| snackBarBottomLeft.dy, |
| // Device height is 600. |
| 600 - viewPadding - floatingSnackBarDefaultBottomMargin, |
| ); |
| }); |
| |
| testWidgets('SnackbarBehavior.floating is positioned within safe area - ScaffoldMessenger', (WidgetTester tester) async { |
| const double viewPadding = 50.0; |
| const double floatingSnackBarDefaultBottomMargin = 10.0; |
| await tester.pumpWidget( |
| MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData( |
| // Simulate non-safe area. |
| viewPadding: EdgeInsets.only(bottom: viewPadding), |
| ), |
| child: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar( |
| const SnackBar( |
| content: Text('I am a snack bar.'), |
| behavior: SnackBarBehavior.floating, |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // Start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final Finder materialFinder = find.descendant( |
| of: find.byType(SnackBar), |
| matching: find.byType(Material), |
| ); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(materialFinder); |
| expect( |
| snackBarBottomLeft.dy, |
| // Device height is 600. |
| 600 - viewPadding - floatingSnackBarDefaultBottomMargin, |
| ); |
| }); |
| |
| testWidgets('Snackbar padding can be customized', (WidgetTester tester) async { |
| const double padding = 20.0; |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar( |
| const SnackBar( |
| content: Text('I am a snack bar.'), |
| padding: EdgeInsets.all(padding), |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final Finder textFinder = find.text('I am a snack bar.'); |
| final Finder materialFinder = find.descendant( |
| of: find.byType(SnackBar), |
| matching: find.byType(Material), |
| ); |
| final Offset textBottomLeft = tester.getBottomLeft(textFinder); |
| final Offset textTopRight = tester.getTopRight(textFinder); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(materialFinder); |
| final Offset snackBarTopRight = tester.getTopRight(materialFinder); |
| expect(textBottomLeft.dx - snackBarBottomLeft.dx, padding); |
| expect(snackBarTopRight.dx - textTopRight.dx, padding); |
| // The text is given a vertical padding of 14 already. |
| expect(snackBarBottomLeft.dy - textBottomLeft.dy, padding + 14); |
| expect(textTopRight.dy - snackBarTopRight.dy, padding + 14); |
| }); |
| |
| testWidgets('Snackbar width can be customized', (WidgetTester tester) async { |
| const double width = 200.0; |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar( |
| SnackBar( |
| content: const Text('I am a snack bar.'), |
| width: width, |
| behavior: SnackBarBehavior.floating, |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final Finder materialFinder = find.descendant( |
| of: find.byType(SnackBar), |
| matching: find.byType(Material), |
| ); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(materialFinder); |
| final Offset snackBarBottomRight = tester.getBottomRight(materialFinder); |
| expect(snackBarBottomLeft.dx, (800 - width) / 2); // Device width is 800. |
| expect(snackBarBottomRight.dx, (800 + width) / 2); // Device width is 800. |
| }); |
| |
| testWidgets('Snackbar labels can be colored', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar( |
| SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction( |
| textColor: Colors.lightBlue, |
| disabledTextColor: Colors.red, |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| |
| final Element actionTextBox = tester.element(find.text('ACTION')); |
| final Widget textWidget = actionTextBox.widget; |
| final DefaultTextStyle defaultTextStyle = DefaultTextStyle.of(actionTextBox); |
| if (textWidget is Text) { |
| final TextStyle effectiveStyle = defaultTextStyle.style.merge(textWidget.style); |
| expect(effectiveStyle.color, Colors.lightBlue); |
| } else { |
| expect(false, true); |
| } |
| }); |
| |
| testWidgets('SnackBar button text alignment', (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.only( |
| left: 10.0, |
| top: 20.0, |
| right: 30.0, |
| bottom: 40.0, |
| ), |
| ), |
| child: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () { }), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); // Animation last frame. |
| |
| final Offset textBottomLeft = tester.getBottomLeft(find.text('I am a snack bar.')); |
| final Offset textBottomRight = tester.getBottomRight(find.text('I am a snack bar.')); |
| final Offset actionTextBottomLeft = tester.getBottomLeft(find.text('ACTION')); |
| final Offset actionTextBottomRight = tester.getBottomRight(find.text('ACTION')); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| |
| expect(textBottomLeft.dx - snackBarBottomLeft.dx, 24.0 + 10.0); // margin + left padding |
| expect(snackBarBottomLeft.dy - textBottomLeft.dy, 17.0 + 40.0); // margin + bottom padding |
| expect(actionTextBottomLeft.dx - textBottomRight.dx, 24.0 + 12.0); // action padding + margin |
| expect(snackBarBottomRight.dx - actionTextBottomRight.dx, 24.0 + 12.0 + 30.0); // action (padding + margin) + right padding |
| expect(snackBarBottomRight.dy - actionTextBottomRight.dy, 17.0 + 40.0); // margin + bottom padding |
| }); |
| |
| testWidgets( |
| 'Custom padding between SnackBar and its contents when set to SnackBarBehavior.fixed', |
| (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.only( |
| left: 10.0, |
| top: 20.0, |
| right: 30.0, |
| bottom: 40.0, |
| ), |
| ), |
| child: Scaffold( |
| bottomNavigationBar: BottomNavigationBar( |
| items: const <BottomNavigationBarItem>[ |
| BottomNavigationBarItem(icon: Icon(Icons.favorite), label: 'Animutation'), |
| BottomNavigationBarItem(icon: Icon(Icons.block), label: 'Zombo.com'), |
| ], |
| ), |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); // Animation last frame. |
| |
| final Offset textBottomLeft = tester.getBottomLeft(find.text('I am a snack bar.')); |
| final Offset textBottomRight = tester.getBottomRight(find.text('I am a snack bar.')); |
| final Offset actionTextBottomLeft = tester.getBottomLeft(find.text('ACTION')); |
| final Offset actionTextBottomRight = tester.getBottomRight(find.text('ACTION')); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| |
| expect(textBottomLeft.dx - snackBarBottomLeft.dx, 24.0 + 10.0); // margin + left padding |
| expect(snackBarBottomLeft.dy - textBottomLeft.dy, 17.0); // margin (with no bottom padding) |
| expect(actionTextBottomLeft.dx - textBottomRight.dx, 24.0 + 12.0); // action padding + margin |
| expect(snackBarBottomRight.dx - actionTextBottomRight.dx, 24.0 + 12.0 + 30.0); // action (padding + margin) + right padding |
| expect(snackBarBottomRight.dy - actionTextBottomRight.dy, 17.0); // margin (with no bottom padding) |
| }); |
| |
| testWidgets('SnackBar should push FloatingActionButton above', (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.only( |
| left: 10.0, |
| top: 20.0, |
| right: 30.0, |
| bottom: 40.0, |
| ), |
| ), |
| child: Scaffold( |
| floatingActionButton: FloatingActionButton( |
| child: const Icon(Icons.send), |
| onPressed: () {}, |
| ), |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| |
| // Get the Rect of the FAB to compare after the SnackBar appears. |
| final Rect originalFabRect = tester.getRect(find.byType(FloatingActionButton)); |
| |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); // Animation last frame. |
| |
| final Rect fabRect = tester.getRect(find.byType(FloatingActionButton)); |
| |
| // FAB should shift upwards after SnackBar appears. |
| expect(fabRect.center.dy, lessThan(originalFabRect.center.dy)); |
| |
| final Offset snackBarTopRight = tester.getTopRight(find.byType(SnackBar)); |
| |
| // FAB's surrounding padding is set to [kFloatingActionButtonMargin] in floating_action_button_location.dart by default. |
| const int defaultFabPadding = 16; |
| |
| // FAB should be positioned above the SnackBar by the default padding. |
| expect(fabRect.bottomRight.dy, snackBarTopRight.dy - defaultFabPadding); |
| }); |
| |
| testWidgets('Floating SnackBar button text alignment', (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| theme: ThemeData( |
| snackBarTheme: const SnackBarThemeData(behavior: SnackBarBehavior.floating,) |
| ), |
| home: MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.only( |
| left: 10.0, |
| top: 20.0, |
| right: 30.0, |
| bottom: 40.0, |
| ), |
| ), |
| child: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); // Animation last frame. |
| |
| final Offset textBottomLeft = tester.getBottomLeft(find.text('I am a snack bar.')); |
| final Offset textBottomRight = tester.getBottomRight(find.text('I am a snack bar.')); |
| final Offset actionTextBottomLeft = tester.getBottomLeft(find.text('ACTION')); |
| final Offset actionTextBottomRight = tester.getBottomRight(find.text('ACTION')); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| |
| expect(textBottomLeft.dx - snackBarBottomLeft.dx, 31.0 + 10.0); // margin + left padding |
| expect(snackBarBottomLeft.dy - textBottomLeft.dy, 27.0); // margin (with no bottom padding) |
| expect(actionTextBottomLeft.dx - textBottomRight.dx, 16.0 + 8.0); // action padding + margin |
| expect(snackBarBottomRight.dx - actionTextBottomRight.dx, 31.0 + 30.0 + 8.0); // margin + right (padding + margin) |
| expect(snackBarBottomRight.dy - actionTextBottomRight.dy, 27.0); // margin (with no bottom padding) |
| }); |
| |
| testWidgets( |
| 'Custom padding between SnackBar and its contents when set to SnackBarBehavior.floating', |
| (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| theme: ThemeData( |
| snackBarTheme: const SnackBarThemeData(behavior: SnackBarBehavior.floating) |
| ), |
| home: MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.only( |
| left: 10.0, |
| top: 20.0, |
| right: 30.0, |
| bottom: 40.0, |
| ), |
| ), |
| child: Scaffold( |
| bottomNavigationBar: BottomNavigationBar( |
| items: const <BottomNavigationBarItem>[ |
| BottomNavigationBarItem(icon: Icon(Icons.favorite), label: 'Animutation'), |
| BottomNavigationBarItem(icon: Icon(Icons.block), label: 'Zombo.com'), |
| ], |
| ), |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); // Animation last frame. |
| |
| final Offset textBottomLeft = tester.getBottomLeft(find.text('I am a snack bar.')); |
| final Offset textBottomRight = tester.getBottomRight(find.text('I am a snack bar.')); |
| final Offset actionTextBottomLeft = tester.getBottomLeft(find.text('ACTION')); |
| final Offset actionTextBottomRight = tester.getBottomRight(find.text('ACTION')); |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| |
| expect(textBottomLeft.dx - snackBarBottomLeft.dx, 31.0 + 10.0); // margin + left padding |
| expect(snackBarBottomLeft.dy - textBottomLeft.dy, 27.0); // margin (with no bottom padding) |
| expect(actionTextBottomLeft.dx - textBottomRight.dx, 16.0 + 8.0); // action (margin + padding) |
| expect(snackBarBottomRight.dx - actionTextBottomRight.dx, 31.0 + 30.0 + 8.0); // margin + right (padding + margin) |
| expect(snackBarBottomRight.dy - actionTextBottomRight.dy, 27.0); // margin (with no bottom padding) |
| }); |
| |
| testWidgets('SnackBarClosedReason', (WidgetTester tester) async { |
| final GlobalKey<ScaffoldMessengerState> scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>(); |
| bool actionPressed = false; |
| SnackBarClosedReason? closedReason; |
| |
| await tester.pumpWidget(MaterialApp( |
| scaffoldMessengerKey: scaffoldMessengerKey, |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('snack'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { |
| actionPressed = true; |
| }, |
| ), |
| )).closed.then<void>((SnackBarClosedReason reason) { |
| closedReason = reason; |
| }); |
| }, |
| child: const Text('X'), |
| ); |
| }, |
| ), |
| ), |
| )); |
| |
| // Pop up the snack bar and then press its action button. |
| await tester.tap(find.text('X')); |
| await tester.pump(); // start animation |
| await tester.pump(const Duration(milliseconds: 750)); |
| expect(actionPressed, isFalse); |
| await tester.tap(find.text('ACTION')); |
| expect(actionPressed, isTrue); |
| // Closed reason is only set when the animation is complete. |
| await tester.pump(const Duration(milliseconds: 250)); |
| expect(closedReason, isNull); |
| // Wait for animation to complete. |
| await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(closedReason, equals(SnackBarClosedReason.action)); |
| |
| // Pop up the snack bar and then swipe downwards to dismiss it. |
| await tester.tap(find.text('X')); |
| await tester.pump(const Duration(milliseconds: 750)); |
| await tester.pump(const Duration(milliseconds: 750)); |
| await tester.drag(find.text('snack'), const Offset(0.0, 50.0)); |
| await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(closedReason, equals(SnackBarClosedReason.swipe)); |
| |
| // Pop up the snack bar and then remove it. |
| await tester.tap(find.text('X')); |
| await tester.pump(const Duration(milliseconds: 750)); |
| scaffoldMessengerKey.currentState!.removeCurrentSnackBar(); |
| await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(closedReason, equals(SnackBarClosedReason.remove)); |
| |
| // Pop up the snack bar and then hide it. |
| await tester.tap(find.text('X')); |
| await tester.pump(const Duration(milliseconds: 750)); |
| scaffoldMessengerKey.currentState!.hideCurrentSnackBar(); |
| await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(closedReason, equals(SnackBarClosedReason.hide)); |
| |
| // Pop up the snack bar and then let it time out. |
| await tester.tap(find.text('X')); |
| await tester.pump(const Duration(milliseconds: 750)); |
| await tester.pump(const Duration(milliseconds: 750)); |
| await tester.pump(const Duration(milliseconds: 1500)); |
| await tester.pump(); // begin animation |
| await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(closedReason, equals(SnackBarClosedReason.timeout)); |
| }); |
| |
| testWidgets('accessible navigation behavior with action', (WidgetTester tester) async { |
| final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>(); |
| |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData(accessibleNavigation: true), |
| child: Scaffold( |
| key: scaffoldKey, |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: const Text('snack'), |
| duration: const Duration(seconds: 1), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| }, |
| ), |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); |
| // Find action immediately |
| expect(find.text('ACTION'), findsOneWidget); |
| // Snackbar doesn't close |
| await tester.pump(const Duration(seconds: 10)); |
| expect(find.text('ACTION'), findsOneWidget); |
| await tester.tap(find.text('ACTION')); |
| await tester.pump(); |
| // Snackbar closes immediately |
| expect(find.text('ACTION'), findsNothing); |
| }); |
| |
| testWidgets('accessible navigation behavior with action - ScaffoldMessenger', (WidgetTester tester) async { |
| final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>(); |
| |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData(accessibleNavigation: true), |
| child: ScaffoldMessenger( |
| child: Builder( |
| builder: (BuildContext context) { |
| return Scaffold( |
| key: scaffoldKey, |
| body: GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('snack'), |
| duration: const Duration(seconds: 1), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ), |
| ); |
| } |
| ) |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pump(); |
| // Find action immediately |
| expect(find.text('ACTION'), findsOneWidget); |
| // Snackbar doesn't close |
| await tester.pump(const Duration(seconds: 10)); |
| expect(find.text('ACTION'), findsOneWidget); |
| await tester.tap(find.text('ACTION')); |
| await tester.pump(); |
| // Snackbar closes immediately |
| expect(find.text('ACTION'), findsNothing); |
| }); |
| |
| testWidgets('contributes dismiss semantics', (WidgetTester tester) async { |
| final SemanticsHandle handle = tester.ensureSemantics(); |
| final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>(); |
| |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData(accessibleNavigation: true), |
| child: Scaffold( |
| key: scaffoldKey, |
| body: Builder(builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: const Text('snack'), |
| duration: const Duration(seconds: 1), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| }), |
| ), |
| ) |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); |
| |
| expect(tester.getSemantics(find.text('snack')), matchesSemantics( |
| isLiveRegion: true, |
| hasDismissAction: true, |
| hasScrollDownAction: true, |
| hasScrollUpAction: true, |
| label: 'snack', |
| textDirection: TextDirection.ltr, |
| )); |
| handle.dispose(); |
| }); |
| |
| testWidgets('contributes dismiss semantics - ScaffoldMessenger', (WidgetTester tester) async { |
| final SemanticsHandle handle = tester.ensureSemantics(); |
| final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>(); |
| |
| await tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: const MediaQueryData(accessibleNavigation: true), |
| child: ScaffoldMessenger( |
| child: Builder(builder: (BuildContext context) { |
| return Scaffold( |
| key: scaffoldKey, |
| body: GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('snack'), |
| duration: const Duration(seconds: 1), |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () { }, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ), |
| ); |
| }), |
| ), |
| ) |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); |
| |
| expect(tester.getSemantics(find.text('snack')), matchesSemantics( |
| isLiveRegion: true, |
| hasDismissAction: true, |
| hasScrollDownAction: true, |
| hasScrollUpAction: true, |
| label: 'snack', |
| textDirection: TextDirection.ltr, |
| )); |
| handle.dispose(); |
| }); |
| |
| testWidgets('SnackBar default display duration test', (WidgetTester tester) async { |
| const String helloSnackBar = 'Hello SnackBar'; |
| const Key tapTarget = Key('tap-target'); |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(const SnackBar( |
| content: Text(helloSnackBar), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| } |
| ), |
| ), |
| )); |
| expect(find.text(helloSnackBar), findsNothing); |
| await tester.tap(find.byKey(tapTarget)); |
| expect(find.text(helloSnackBar), findsNothing); |
| await tester.pump(); // schedule animation |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 0.75s // animation last frame; four second timer starts here |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 1.50s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 2.25s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.00s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); // 3.75s |
| expect(find.text(helloSnackBar), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 1000)); // 4.75s // timer triggers to dismiss snackbar, reverse animation is scheduled |
| await tester.pump(); // begin animation |
| expect(find.text(helloSnackBar), findsOneWidget); // frame 0 of dismiss animation |
| await tester.pump(const Duration(milliseconds: 750)); // 5.50s // last frame of animation, snackbar removed from build |
| expect(find.text(helloSnackBar), findsNothing); |
| }); |
| |
| testWidgets('SnackBar handles updates to accessibleNavigation', (WidgetTester tester) async { |
| Future<void> boilerplate({ required bool accessibleNavigation }) { |
| return tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: MediaQueryData(accessibleNavigation: accessibleNavigation), |
| child: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: const Text('test'), |
| action: SnackBarAction(label: 'foo', onPressed: () { }), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| } |
| |
| await boilerplate(accessibleNavigation: false); |
| expect(find.text('test'), findsNothing); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // schedule animation |
| expect(find.text('test'), findsOneWidget); |
| await tester.pump(); // begin animation |
| await tester.pump(const Duration(milliseconds: 4750)); // 4.75s |
| expect(find.text('test'), findsOneWidget); |
| |
| // Enabled accessible navigation |
| await boilerplate(accessibleNavigation: true); |
| |
| await tester.pump(const Duration(milliseconds: 4000)); // 8.75s |
| await tester.pump(); |
| expect(find.text('test'), findsOneWidget); |
| |
| // disable accessible navigation |
| await boilerplate(accessibleNavigation: false); |
| await tester.pumpAndSettle(const Duration(milliseconds: 5750)); |
| |
| expect(find.text('test'), findsNothing); |
| }); |
| |
| testWidgets('SnackBar handles updates to accessibleNavigation - ScaffoldMessenger', (WidgetTester tester) async { |
| Future<void> boilerplate({ required bool accessibleNavigation }) { |
| return tester.pumpWidget(MaterialApp( |
| home: MediaQuery( |
| data: MediaQueryData(accessibleNavigation: accessibleNavigation), |
| child: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('test'), |
| action: SnackBarAction(label: 'foo', onPressed: () { }), |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: const Text('X'), |
| ); |
| } |
| ), |
| ), |
| ), |
| )); |
| } |
| |
| await boilerplate(accessibleNavigation: false); |
| expect(find.text('test'), findsNothing); |
| await tester.tap(find.text('X')); |
| await tester.pump(); // schedule animation |
| expect(find.text('test'), findsOneWidget); |
| await tester.pump(); // begin animation |
| await tester.pump(const Duration(milliseconds: 4750)); // 4.75s |
| expect(find.text('test'), findsOneWidget); |
| |
| // Enabled accessible navigation |
| await boilerplate(accessibleNavigation: true); |
| |
| await tester.pump(const Duration(milliseconds: 4000)); // 8.75s |
| await tester.pump(); |
| expect(find.text('test'), findsOneWidget); |
| |
| // disable accessible navigation |
| await boilerplate(accessibleNavigation: false); |
| await tester.pumpAndSettle(const Duration(milliseconds: 5750)); |
| |
| expect(find.text('test'), findsNothing); |
| }); |
| |
| testWidgets('Snackbar calls onVisible once', (WidgetTester tester) async { |
| const Key tapTarget = Key('tap-target'); |
| int called = 0; |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('hello'), |
| duration: const Duration(seconds: 1), |
| onVisible: () { |
| called += 1; |
| }, |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| }, |
| ), |
| ), |
| )); |
| |
| await tester.tap(find.byKey(tapTarget)); |
| await tester.pump(); // start animation |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('hello'), findsOneWidget); |
| expect(called, 1); |
| }); |
| |
| testWidgets('Snackbar does not call onVisible when it is queued', (WidgetTester tester) async { |
| const Key tapTarget = Key('tap-target'); |
| int called = 0; |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('hello'), |
| duration: const Duration(seconds: 1), |
| onVisible: () { |
| called += 1; |
| }, |
| )); |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('hello 2'), |
| duration: const Duration(seconds: 1), |
| onVisible: () { |
| called += 1; |
| }, |
| )); |
| }, |
| behavior: HitTestBehavior.opaque, |
| child: Container( |
| height: 100.0, |
| width: 100.0, |
| key: tapTarget, |
| ), |
| ); |
| }, |
| ), |
| ), |
| )); |
| |
| await tester.tap(find.byKey(tapTarget)); |
| await tester.pump(); // start animation |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('hello'), findsOneWidget); |
| expect(called, 1); |
| }); |
| |
| group('SnackBar position', () { |
| for (final SnackBarBehavior behavior in SnackBarBehavior.values) { |
| final SnackBar snackBar = SnackBar( |
| content: const Text('SnackBar text'), |
| behavior: behavior, |
| ); |
| |
| testWidgets( |
| '$behavior should align SnackBar with the bottom of Scaffold ' |
| 'when Scaffold has no other elements', |
| (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Container(), |
| ), |
| ), |
| ); |
| |
| final ScaffoldMessengerState scaffoldMessengerState = tester.state(find.byType(ScaffoldMessenger)); |
| scaffoldMessengerState.showSnackBar(snackBar); |
| |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| final Offset scaffoldBottomRight = tester.getBottomRight(find.byType(Scaffold)); |
| |
| expect(snackBarBottomRight, equals(scaffoldBottomRight)); |
| |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset scaffoldBottomLeft = tester.getBottomLeft(find.byType(Scaffold)); |
| |
| expect(snackBarBottomLeft, equals(scaffoldBottomLeft)); |
| }, |
| ); |
| |
| testWidgets( |
| '$behavior should align SnackBar with the top of BottomNavigationBar ' |
| 'when Scaffold has no FloatingActionButton', |
| (WidgetTester tester) async { |
| final UniqueKey boxKey = UniqueKey(); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Container(), |
| bottomNavigationBar: SizedBox(key: boxKey, width: 800, height: 60), |
| ), |
| ), |
| ); |
| |
| final ScaffoldMessengerState scaffoldMessengerState = tester.state(find.byType(ScaffoldMessenger)); |
| scaffoldMessengerState.showSnackBar(snackBar); |
| |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| final Offset bottomNavigationBarTopRight = tester.getTopRight(find.byKey(boxKey)); |
| |
| expect(snackBarBottomRight, equals(bottomNavigationBarTopRight)); |
| |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset bottomNavigationBarTopLeft = tester.getTopLeft(find.byKey(boxKey)); |
| |
| expect(snackBarBottomLeft, equals(bottomNavigationBarTopLeft)); |
| }, |
| ); |
| |
| testWidgets( |
| 'Padding of $behavior is not consumed by viewInsets', |
| (WidgetTester tester) async { |
| final Widget child = MaterialApp( |
| home: Scaffold( |
| resizeToAvoidBottomInset: false, |
| floatingActionButton: FloatingActionButton( |
| child: const Icon(Icons.send), |
| onPressed: () {}, |
| ), |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar( |
| SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| behavior: behavior, |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ); |
| }, |
| ), |
| ), |
| ); |
| |
| await tester.pumpWidget( |
| MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.only(bottom: 20.0), |
| ), |
| child: child, |
| ), |
| ); |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); // Show snackbar |
| final Offset initialBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset initialBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| // Consume bottom padding - as if by the keyboard opening |
| await tester.pumpWidget( |
| MediaQuery( |
| data: const MediaQueryData( |
| padding: EdgeInsets.zero, |
| viewPadding: EdgeInsets.all(20), |
| viewInsets: EdgeInsets.all(100), |
| ), |
| child: child, |
| ), |
| ); |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset finalBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset finalBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| |
| expect(initialBottomLeft, finalBottomLeft); |
| expect(initialBottomRight, finalBottomRight); |
| }, |
| ); |
| } |
| |
| testWidgets( |
| '${SnackBarBehavior.fixed} should align SnackBar with the bottom of Scaffold ' |
| 'when Scaffold has a FloatingActionButton', |
| (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Container(), |
| floatingActionButton: FloatingActionButton(onPressed: () {}), |
| ), |
| ), |
| ); |
| |
| final ScaffoldMessengerState scaffoldMessengerState = tester.state(find.byType(ScaffoldMessenger)); |
| scaffoldMessengerState.showSnackBar( |
| const SnackBar( |
| content: Text('Snackbar text'), |
| behavior: SnackBarBehavior.fixed, |
| ), |
| ); |
| |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| final Offset scaffoldBottomRight = tester.getBottomRight(find.byType(Scaffold)); |
| |
| expect(snackBarBottomRight, equals(scaffoldBottomRight)); |
| |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset scaffoldBottomLeft = tester.getBottomLeft(find.byType(Scaffold)); |
| |
| expect(snackBarBottomLeft, equals(scaffoldBottomLeft)); |
| }, |
| ); |
| |
| testWidgets( |
| '${SnackBarBehavior.floating} should align SnackBar with the top of FloatingActionButton' |
| 'when Scaffold has a FloatingActionButton', |
| (WidgetTester tester) async { |
| await tester.pumpWidget(MaterialApp( |
| home: Scaffold( |
| floatingActionButton: FloatingActionButton( |
| child: const Icon(Icons.send), |
| onPressed: () {}, |
| ), |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| ScaffoldMessenger.of(context)!.showSnackBar(SnackBar( |
| content: const Text('I am a snack bar.'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| behavior: SnackBarBehavior.floating, |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| }, |
| ), |
| ), |
| )); |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset floatingActionButtonTopLeft = tester.getTopLeft( |
| find.byType(FloatingActionButton), |
| ); |
| |
| // Since padding between the SnackBar and the FAB is created by the SnackBar, |
| // the bottom offset of the SnackBar should be equal to the top offset of the FAB |
| expect(snackBarBottomLeft.dy, floatingActionButtonTopLeft.dy); |
| }, |
| ); |
| |
| testWidgets( |
| '${SnackBarBehavior.fixed} should align SnackBar with the top of BottomNavigationBar ' |
| 'when Scaffold has a BottomNavigationBar and FloatingActionButton', |
| (WidgetTester tester) async { |
| final UniqueKey boxKey = UniqueKey(); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Container(), |
| bottomNavigationBar: SizedBox(key: boxKey, width: 800, height: 60), |
| floatingActionButton: FloatingActionButton(onPressed: () {}), |
| ), |
| ), |
| ); |
| |
| final ScaffoldMessengerState scaffoldMessengerState = tester.state(find.byType(ScaffoldMessenger)); |
| scaffoldMessengerState.showSnackBar( |
| const SnackBar( |
| content: Text('SnackBar text'), |
| behavior: SnackBarBehavior.fixed, |
| ), |
| ); |
| |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| final Offset bottomNavigationBarTopRight = tester.getTopRight(find.byKey(boxKey)); |
| |
| expect(snackBarBottomRight, equals(bottomNavigationBarTopRight)); |
| |
| final Offset snackBarBottomLeft = tester.getBottomLeft(find.byType(SnackBar)); |
| final Offset bottomNavigationBarTopLeft = tester.getTopLeft(find.byKey(boxKey)); |
| |
| expect(snackBarBottomLeft, equals(bottomNavigationBarTopLeft)); |
| }, |
| ); |
| |
| testWidgets( |
| '${SnackBarBehavior.floating} should align SnackBar with the top of FloatingActionButton ' |
| 'when Scaffold has BottomNavigationBar and FloatingActionButton', |
| (WidgetTester tester) async { |
| final UniqueKey boxKey = UniqueKey(); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Container(), |
| bottomNavigationBar: SizedBox(key: boxKey, width: 800, height: 60), |
| floatingActionButton: FloatingActionButton(onPressed: () {}), |
| ), |
| ), |
| ); |
| |
| final ScaffoldMessengerState scaffoldMessengerState = tester.state(find.byType(ScaffoldMessenger)); |
| scaffoldMessengerState.showSnackBar( |
| const SnackBar( |
| content: Text('SnackBar text'), |
| behavior: SnackBarBehavior.floating, |
| ), |
| ); |
| |
| await tester.pumpAndSettle(); // Have the SnackBar fully animate out. |
| |
| final Offset snackBarBottomRight = tester.getBottomRight(find.byType(SnackBar)); |
| final Offset fabTopRight = tester.getTopRight(find.byType(FloatingActionButton)); |
| |
| expect(snackBarBottomRight.dy, equals(fabTopRight.dy)); |
| }, |
| ); |
| |
| testWidgets( |
| 'SnackBar has correct end padding when it contains an action with fixed behavior', |
| (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: const Text('Some content'), |
| behavior: SnackBarBehavior.fixed, |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () {}, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| }, |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); |
| |
| final Offset snackBarTopRight = tester.getTopRight(find.byType(SnackBar)); |
| final Offset actionTopRight = tester.getTopRight(find.byType(SnackBarAction)); |
| |
| expect(snackBarTopRight.dx - actionTopRight.dx, 12.0); |
| }, |
| ); |
| |
| testWidgets( |
| 'SnackBar has correct end padding when it contains an action with floating behavior', |
| (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| body: Builder( |
| builder: (BuildContext context) { |
| return GestureDetector( |
| onTap: () { |
| Scaffold.of(context)!.showSnackBar(SnackBar( |
| content: const Text('Some content'), |
| behavior: SnackBarBehavior.floating, |
| action: SnackBarAction( |
| label: 'ACTION', |
| onPressed: () {}, |
| ), |
| )); |
| }, |
| child: const Text('X'), |
| ); |
| }, |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.text('X')); |
| await tester.pumpAndSettle(); |
| final Offset snackBarTopRight = tester.getTopRight(find.byType(SnackBar)); |
| final Offset actionTopRight = tester.getTopRight(find.byType(SnackBarAction)); |
| |
| expect(snackBarTopRight.dx - actionTopRight.dx, 8.0 + 15.0); // button margin + horizontal scaffold outside margin |
| }, |
| ); |
| }); |
| |
| testWidgets('SnackBars hero across transitions when using ScaffoldMessenger', (WidgetTester tester) async { |
| const String snackBarText = 'hello snackbar'; |
| const String firstHeader = 'home'; |
| const String secondHeader = 'second'; |
| const Key snackTarget = Key('snack-target'); |
| const Key transitionTarget = Key('transition-target'); |
| |
| Widget _buildApp() { |
| return MaterialApp( |
| routes: <String, WidgetBuilder> { |
| '/': (BuildContext context) { |
| return Scaffold( |
| appBar: AppBar(title: const Text(firstHeader)), |
| body: Center( |
| child: ElevatedButton( |
| key: transitionTarget, |
| child: const Text('PUSH'), |
| onPressed: () { |
| Navigator.of(context)!.pushNamed('/second'); |
| }, |
| ), |
| ), |
| floatingActionButton: FloatingActionButton( |
| key: snackTarget, |
| onPressed: () async { |
| ScaffoldMessenger.of(context)!.showSnackBar( |
| const SnackBar( |
| content: Text(snackBarText), |
| ), |
| ); |
| }, |
| child: const Text('X'), |
| ), |
| ); |
| }, |
| '/second': (BuildContext context) => Scaffold(appBar: AppBar(title: const Text(secondHeader)), |
| ), |
| } |
| ); |
| } |
| await tester.pumpWidget(_buildApp()); |
| |
| expect(find.text(snackBarText), findsNothing); |
| expect(find.text(firstHeader), findsOneWidget); |
| expect(find.text(secondHeader), findsNothing); |
| |
| // Present SnackBar |
| await tester.tap(find.byKey(snackTarget)); |
| await tester.pump(); // schedule animation |
| expect(find.text(snackBarText), findsOneWidget); |
| await tester.pump(); // begin animation |
| expect(find.text(snackBarText), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); |
| expect(find.text(snackBarText), findsOneWidget); |
| // Push new route |
| await tester.tap(find.byKey(transitionTarget)); |
| await tester.pump(); |
| expect(find.text(snackBarText), findsOneWidget); |
| expect(find.text(firstHeader), findsOneWidget); |
| expect(find.text(secondHeader, skipOffstage: false), findsOneWidget); |
| await tester.pump(); |
| expect(find.text(snackBarText), findsOneWidget); |
| expect(find.text(firstHeader), findsOneWidget); |
| expect(find.text(secondHeader), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 750)); |
| expect(find.text(snackBarText), findsOneWidget); |
| expect(find.text(firstHeader), findsNothing); |
| expect(find.text(secondHeader), findsOneWidget); |
| }); |
| |
| testWidgets('SnackBars cannot be used by the Scaffold and ScaffoldMessenger at the same time', (WidgetTester tester) async { |
| await tester.pumpWidget(const MaterialApp( |
| home: Scaffold(), |
| )); |
| |
| final ScaffoldMessengerState scaffoldMessengerState = tester.state(find.byType(ScaffoldMessenger)); |
| scaffoldMessengerState.showSnackBar(SnackBar( |
| content: const Text('ScaffoldMessenger'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| behavior: SnackBarBehavior.floating, |
| )); |
| final ScaffoldState scaffoldState = tester.state(find.byType(Scaffold)); |
| scaffoldState.showSnackBar(SnackBar( |
| content: const Text('Scaffold'), |
| duration: const Duration(seconds: 2), |
| action: SnackBarAction(label: 'ACTION', onPressed: () {}), |
| behavior: SnackBarBehavior.floating, |
| )); |
| |
| final List<dynamic> exceptions = <dynamic>[]; |
| final FlutterExceptionHandler? oldHandler = FlutterError.onError; |
| FlutterError.onError = (FlutterErrorDetails details) { |
| exceptions.add(details.exception); |
| }; |
| await tester.pump(); |
| FlutterError.onError = oldHandler; |
| |
| expect(exceptions.length, 1); |
| final AssertionError error = exceptions.first as AssertionError; |
| expect(error.message, contains('Only one API should be used to manage SnackBars.')); |
| }); |
| } |
