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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.
60 lines
1.9 KiB
Dart
60 lines
1.9 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/rendering.dart';
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import 'package:flutter/material.dart';
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void main() {
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// The "can be constructed" tests that follow are primarily to ensure that any
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// animations started by the progress indicators are stopped at dispose() time.
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testWidgets('LinearProgressIndicator(value: 0.0) can be constructed', (WidgetTester tester) async {
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await tester.pumpWidget(
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new Center(
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child: new SizedBox(
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width: 200.0,
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child: new LinearProgressIndicator(value: 0.0)
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)
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)
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);
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});
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testWidgets('LinearProgressIndicator(value: null) can be constructed', (WidgetTester tester) async {
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await tester.pumpWidget(
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new Center(
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child: new SizedBox(
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width: 200.0,
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child: new LinearProgressIndicator(value: null)
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)
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)
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);
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});
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testWidgets('CircularProgressIndicator(value: 0.0) can be constructed', (WidgetTester tester) async {
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await tester.pumpWidget(
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new Center(
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child: new CircularProgressIndicator(value: 0.0)
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)
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);
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});
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testWidgets('CircularProgressIndicator(value: null) can be constructed', (WidgetTester tester) async {
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await tester.pumpWidget(
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new Center(
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child: new CircularProgressIndicator(value: null)
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)
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);
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});
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testWidgets('LinearProgressIndicator causes a repaint when it changes', (WidgetTester tester) async {
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await tester.pumpWidget(new Block(children: <Widget>[new LinearProgressIndicator(value: 0.0)]));
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List<Layer> layers1 = tester.layers;
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await tester.pumpWidget(new Block(children: <Widget>[new LinearProgressIndicator(value: 0.5)]));
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List<Layer> layers2 = tester.layers;
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expect(layers1, isNot(equals(layers2)));
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});
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}
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