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This makes it possible to substitute 'flutter run' for 'flutter test'
and actually watch a test run on a device.
For any test that depends on flutter_test:
1. Remove any import of 'package:test/test.dart'.
2. Replace `testWidgets('...', (WidgetTester tester) {`
with `testWidgets('...', (WidgetTester tester) async {`
3. Add an "await" in front of calls to any of the following:
* tap()
* tapAt()
* fling()
* flingFrom()
* scroll()
* scrollAt()
* pump()
* pumpWidget()
4. Replace any calls to `tester.flushMicrotasks()` with calls to
`await tester.idle()`.
There's a guarding API that you can use, if you have particularly
complicated tests, to get better error messages. Search for
TestAsyncUtils.
46 lines
1.1 KiB
Dart
46 lines
1.1 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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class TestCustomPainter extends CustomPainter {
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TestCustomPainter({ this.log, this.name });
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List<String> log;
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String name;
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@override
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void paint(Canvas canvas, Size size) {
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log.add(name);
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}
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@override
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bool shouldRepaint(TestCustomPainter oldPainter) => true;
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}
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void main() {
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testWidgets('Control test for custom painting', (WidgetTester tester) async {
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List<String> log = <String>[];
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await tester.pumpWidget(new CustomPaint(
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painter: new TestCustomPainter(
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log: log,
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name: 'background'
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),
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foregroundPainter: new TestCustomPainter(
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log: log,
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name: 'foreground'
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),
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child: new CustomPaint(
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painter: new TestCustomPainter(
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log: log,
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name: 'child'
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)
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)
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));
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expect(log, equals(<String>['background', 'child', 'foreground']));
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});
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}
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