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91dd969966
* Refactor widget test framework
Instead of:
```dart
test("Card Collection smoke test", () {
testWidgets((WidgetTester tester) {
```
...you now say:
```dart
testWidgets("Card Collection smoke test", (WidgetTester tester) {
```
Instead of:
```dart
expect(tester, hasWidget(find.text('hello')));
```
...you now say:
```dart
expect(find.text('hello'), findsOneWidget);
```
Instead of the previous API (exists, widgets, widget, stateOf,
elementOf, etc), you now have the following comprehensive API. All these
are functions that take a Finder, except the all* properties.
* `any()` - true if anything matches, c.f. `Iterable.any`
* `allWidgets` - all the widgets in the tree
* `widget()` - the one and only widget that matches the finder
* `firstWidget()` - the first widget that matches the finder
* `allElements` - all the elements in the tree
* `element()` - the one and only element that matches the finder
* `firstElement()` - the first element that matches the finder
* `allStates` - all the `State`s in the tree
* `state()` - the one and only state that matches the finder
* `firstState()` - the first state that matches the finder
* `allRenderObjects` - all the render objects in the tree
* `renderObject()` - the one and only render object that matches the finder
* `firstRenderObject()` - the first render object that matches the finder
There's also `layers' which returns the list of current layers.
`tap`, `fling`, getCenter, getSize, etc, take Finders, like the APIs
above, and expect there to only be one matching widget.
The finders are:
* `find.text(String text)`
* `find.widgetWithText(Type widgetType, String text)`
* `find.byKey(Key key)`
* `find.byType(Type type)`
* `find.byElementType(Type type)`
* `find.byConfig(Widget config)`
* `find.byWidgetPredicate(WidgetPredicate predicate)`
* `find.byElementPredicate(ElementPredicate predicate)`
The matchers (for `expect`) are:
* `findsNothing`
* `findsWidgets`
* `findsOneWidget`
* `findsNWidgets(n)`
* `isOnStage`
* `isOffStage`
* `isInCard`
* `isNotInCard`
Benchmarks now use benchmarkWidgets instead of testWidgets.
Also, for those of you using mockers, `serviceMocker` now automatically
handles the binding initialization.
This patch also:
* changes how tests are run so that we can more easily swap the logic
out for a "real" mode instead of FakeAsync.
* introduces CachingIterable.
* changes how flutter_driver interacts with the widget tree to use the
aforementioned new API rather than ElementTreeTester, which is gone.
* removes ElementTreeTester.
* changes the semantics of a test for scrollables because we couldn't
convince ourselves that the old semantics made sense; it only worked
before because flushing the microtasks after every event was broken.
* fixes the flushing of microtasks after every event.
* Reindent the tests
* Fix review comments
258 lines
7.8 KiB
Dart
258 lines
7.8 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/widgets.dart';
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import 'package:test/test.dart';
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import '../rendering/rendering_tester.dart';
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void main() {
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testWidgets('Can construct an empty Stack', (WidgetTester tester) {
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tester.pumpWidget(new Stack());
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});
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testWidgets('Can construct an empty Centered Stack', (WidgetTester tester) {
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tester.pumpWidget(new Center(child: new Stack()));
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});
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testWidgets('Can change position data', (WidgetTester tester) {
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Key key = new Key('container');
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tester.pumpWidget(
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new Stack(
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children: <Widget>[
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new Positioned(
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left: 10.0,
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child: new Container(
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key: key,
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width: 10.0,
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height: 10.0
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)
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)
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]
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)
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);
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Element container;
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StackParentData parentData;
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container = tester.element(find.byKey(key));
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parentData = container.renderObject.parentData;
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expect(parentData.top, isNull);
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expect(parentData.right, isNull);
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expect(parentData.bottom, isNull);
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expect(parentData.left, equals(10.0));
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expect(parentData.width, isNull);
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expect(parentData.height, isNull);
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tester.pumpWidget(
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new Stack(
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children: <Widget>[
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new Positioned(
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right: 10.0,
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child: new Container(
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key: key,
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width: 10.0,
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height: 10.0
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)
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)
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]
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)
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);
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container = tester.element(find.byKey(key));
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parentData = container.renderObject.parentData;
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expect(parentData.top, isNull);
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expect(parentData.right, equals(10.0));
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expect(parentData.bottom, isNull);
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expect(parentData.left, isNull);
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expect(parentData.width, isNull);
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expect(parentData.height, isNull);
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});
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testWidgets('Can remove parent data', (WidgetTester tester) {
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Key key = new Key('container');
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Container container = new Container(key: key, width: 10.0, height: 10.0);
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tester.pumpWidget(new Stack(children: <Widget>[ new Positioned(left: 10.0, child: container) ]));
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Element containerElement = tester.element(find.byKey(key));
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StackParentData parentData;
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parentData = containerElement.renderObject.parentData;
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expect(parentData.top, isNull);
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expect(parentData.right, isNull);
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expect(parentData.bottom, isNull);
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expect(parentData.left, equals(10.0));
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expect(parentData.width, isNull);
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expect(parentData.height, isNull);
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tester.pumpWidget(new Stack(children: <Widget>[ container ]));
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containerElement = tester.element(find.byKey(key));
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parentData = containerElement.renderObject.parentData;
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expect(parentData.top, isNull);
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expect(parentData.right, isNull);
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expect(parentData.bottom, isNull);
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expect(parentData.left, isNull);
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expect(parentData.width, isNull);
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expect(parentData.height, isNull);
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});
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testWidgets('Can align non-positioned children', (WidgetTester tester) {
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Key child0Key = new Key('child0');
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Key child1Key = new Key('child1');
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tester.pumpWidget(
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new Center(
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child: new Stack(
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children: <Widget>[
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new Container(key: child0Key, width: 20.0, height: 20.0),
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new Container(key: child1Key, width: 10.0, height: 10.0)
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],
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alignment: const FractionalOffset(0.5, 0.5)
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)
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)
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);
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Element child0 = tester.element(find.byKey(child0Key));
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final StackParentData child0RenderObjectParentData = child0.renderObject.parentData;
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expect(child0RenderObjectParentData.offset, equals(const Offset(0.0, 0.0)));
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Element child1 = tester.element(find.byKey(child1Key));
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final StackParentData child1RenderObjectParentData = child1.renderObject.parentData;
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expect(child1RenderObjectParentData.offset, equals(const Offset(5.0, 5.0)));
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});
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testWidgets('Can construct an empty IndexedStack', (WidgetTester tester) {
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tester.pumpWidget(new IndexedStack());
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});
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testWidgets('Can construct an empty Centered IndexedStack', (WidgetTester tester) {
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tester.pumpWidget(new Center(child: new IndexedStack()));
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});
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testWidgets('Can construct an IndexedStack', (WidgetTester tester) {
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int itemCount = 3;
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List<int> itemsPainted;
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Widget buildFrame(int index) {
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itemsPainted = <int>[];
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List<Widget> items = new List<Widget>.generate(itemCount, (int i) {
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return new CustomPaint(
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child: new Text('$i'),
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painter: new TestCallbackPainter(
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onPaint: () { itemsPainted.add(i); }
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)
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);
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});
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return new Center(child: new IndexedStack(children: items, index: index));
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}
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tester.pumpWidget(buildFrame(0));
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expect(find.text('0'), findsOneWidget);
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expect(find.text('1'), findsOneWidget);
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expect(find.text('2'), findsOneWidget);
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expect(itemsPainted, equals([0]));
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tester.pumpWidget(buildFrame(1));
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expect(itemsPainted, equals([1]));
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tester.pumpWidget(buildFrame(2));
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expect(itemsPainted, equals([2]));
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});
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testWidgets('Can hit test an IndexedStack', (WidgetTester tester) {
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Key key = new Key('indexedStack');
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int itemCount = 3;
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List<int> itemsTapped;
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Widget buildFrame(int index) {
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itemsTapped = <int>[];
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List<Widget> items = new List<Widget>.generate(itemCount, (int i) {
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return new GestureDetector(child: new Text('$i'), onTap: () { itemsTapped.add(i); });
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});
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return new Center(child: new IndexedStack(children: items, key: key, index: index));
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}
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tester.pumpWidget(buildFrame(0));
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expect(itemsTapped, isEmpty);
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tester.tap(find.byKey(key));
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expect(itemsTapped, [0]);
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tester.pumpWidget(buildFrame(2));
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expect(itemsTapped, isEmpty);
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tester.tap(find.byKey(key));
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expect(itemsTapped, [2]);
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});
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testWidgets('Can set width and height', (WidgetTester tester) {
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Key key = new Key('container');
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BoxDecoration kBoxDecoration = new BoxDecoration(
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backgroundColor: new Color(0xFF00FF00)
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);
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tester.pumpWidget(
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new Stack(
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children: <Widget>[
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new Positioned(
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left: 10.0,
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width: 11.0,
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height: 12.0,
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child: new DecoratedBox(key: key, decoration: kBoxDecoration)
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)
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]
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)
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);
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Element box;
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RenderBox renderBox;
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StackParentData parentData;
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box = tester.element(find.byKey(key));
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renderBox = box.renderObject;
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parentData = renderBox.parentData;
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expect(parentData.top, isNull);
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expect(parentData.right, isNull);
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expect(parentData.bottom, isNull);
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expect(parentData.left, equals(10.0));
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expect(parentData.width, equals(11.0));
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expect(parentData.height, equals(12.0));
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expect(parentData.offset.dx, equals(10.0));
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expect(parentData.offset.dy, equals(0.0));
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expect(renderBox.size.width, equals(11.0));
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expect(renderBox.size.height, equals(12.0));
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tester.pumpWidget(
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new Stack(
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children: <Widget>[
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new Positioned(
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right: 10.0,
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width: 11.0,
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height: 12.0,
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child: new DecoratedBox(key: key, decoration: kBoxDecoration)
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)
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]
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)
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);
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box = tester.element(find.byKey(key));
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renderBox = box.renderObject;
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parentData = renderBox.parentData;
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expect(parentData.top, isNull);
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expect(parentData.right, equals(10.0));
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expect(parentData.bottom, isNull);
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expect(parentData.left, isNull);
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expect(parentData.width, equals(11.0));
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expect(parentData.height, equals(12.0));
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expect(parentData.offset.dx, equals(779.0));
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expect(parentData.offset.dy, equals(0.0));
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expect(renderBox.size.width, equals(11.0));
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expect(renderBox.size.height, equals(12.0));
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});
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}
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