mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
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
109 lines
4.1 KiB
Dart
109 lines
4.1 KiB
Dart
// Copyright 2015 The Chromium 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_test/flutter_test.dart';
|
|
import 'package:flutter/material.dart';
|
|
import 'package:test/test.dart';
|
|
|
|
class ThePositiveNumbers extends StatelessWidget {
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return new ScrollableLazyList(
|
|
itemExtent: 100.0,
|
|
itemBuilder: (BuildContext context, int start, int count) {
|
|
List<Widget> result = new List<Widget>();
|
|
for (int index = start; index < start + count; index += 1)
|
|
result.add(new Text('$index', key: new ValueKey<int>(index)));
|
|
return result;
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
void main() {
|
|
testWidgets('whether we remember our scroll position', (WidgetTester tester) {
|
|
GlobalKey<NavigatorState> navigatorKey = new GlobalKey<NavigatorState>();
|
|
tester.pumpWidget(new Navigator(
|
|
key: navigatorKey,
|
|
onGenerateRoute: (RouteSettings settings) {
|
|
if (settings.name == '/')
|
|
return new MaterialPageRoute<Null>(builder: (_) => new Container(child: new ThePositiveNumbers()));
|
|
else if (settings.name == '/second')
|
|
return new MaterialPageRoute<Null>(builder: (_) => new Container(child: new ThePositiveNumbers()));
|
|
return null;
|
|
}
|
|
));
|
|
|
|
// we're 600 pixels high, each item is 100 pixels high, scroll position is
|
|
// zero, so we should have exactly 6 items, 0..5.
|
|
expect(find.text('0'), findsOneWidget);
|
|
expect(find.text('1'), findsOneWidget);
|
|
expect(find.text('2'), findsOneWidget);
|
|
expect(find.text('3'), findsOneWidget);
|
|
expect(find.text('4'), findsOneWidget);
|
|
expect(find.text('5'), findsOneWidget);
|
|
expect(find.text('6'), findsNothing);
|
|
expect(find.text('10'), findsNothing);
|
|
expect(find.text('100'), findsNothing);
|
|
|
|
ScrollableState targetState = tester.state(find.byType(ScrollableLazyList));
|
|
targetState.scrollTo(1000.0);
|
|
tester.pump(new Duration(seconds: 1));
|
|
|
|
// we're 600 pixels high, each item is 100 pixels high, scroll position is
|
|
// 1000, so we should have exactly 6 items, 10..15.
|
|
|
|
expect(find.text('0'), findsNothing);
|
|
expect(find.text('8'), findsNothing);
|
|
expect(find.text('9'), findsNothing);
|
|
expect(find.text('10'), findsOneWidget);
|
|
expect(find.text('11'), findsOneWidget);
|
|
expect(find.text('12'), findsOneWidget);
|
|
expect(find.text('13'), findsOneWidget);
|
|
expect(find.text('14'), findsOneWidget);
|
|
expect(find.text('15'), findsOneWidget);
|
|
expect(find.text('16'), findsNothing);
|
|
expect(find.text('100'), findsNothing);
|
|
|
|
navigatorKey.currentState.openTransaction(
|
|
(NavigatorTransaction transaction) => transaction.pushNamed('/second')
|
|
);
|
|
tester.pump(); // navigating always takes two frames
|
|
tester.pump(new Duration(seconds: 1));
|
|
|
|
// same as the first list again
|
|
expect(find.text('0'), findsOneWidget);
|
|
expect(find.text('1'), findsOneWidget);
|
|
expect(find.text('2'), findsOneWidget);
|
|
expect(find.text('3'), findsOneWidget);
|
|
expect(find.text('4'), findsOneWidget);
|
|
expect(find.text('5'), findsOneWidget);
|
|
expect(find.text('6'), findsNothing);
|
|
expect(find.text('10'), findsNothing);
|
|
expect(find.text('100'), findsNothing);
|
|
|
|
navigatorKey.currentState.openTransaction(
|
|
(NavigatorTransaction transaction) => transaction.pop()
|
|
);
|
|
tester.pump(); // navigating always takes two frames
|
|
tester.pump(new Duration(seconds: 1));
|
|
|
|
// we're 600 pixels high, each item is 100 pixels high, scroll position is
|
|
// 1000, so we should have exactly 6 items, 10..15.
|
|
|
|
expect(find.text('0'), findsNothing);
|
|
expect(find.text('8'), findsNothing);
|
|
expect(find.text('9'), findsNothing);
|
|
expect(find.text('10'), findsOneWidget);
|
|
expect(find.text('11'), findsOneWidget);
|
|
expect(find.text('12'), findsOneWidget);
|
|
expect(find.text('13'), findsOneWidget);
|
|
expect(find.text('14'), findsOneWidget);
|
|
expect(find.text('15'), findsOneWidget);
|
|
expect(find.text('16'), findsNothing);
|
|
expect(find.text('100'), findsNothing);
|
|
|
|
});
|
|
}
|