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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
138 lines
4.5 KiB
Dart
138 lines
4.5 KiB
Dart
import 'package:flutter_markdown/flutter_markdown.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/widgets.dart';
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import 'package:test/test.dart';
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import 'package:flutter/material.dart';
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void main() {
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testWidgets('Simple string', (WidgetTester tester) {
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tester.pumpWidget(new MarkdownBody(data: 'Hello'));
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Iterable<Widget> widgets = tester.allWidgets;
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_expectWidgetTypes(widgets, <Type>[MarkdownBody, Column, Container, Padding, RichText]);
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_expectTextStrings(widgets, <String>['Hello']);
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});
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testWidgets('Header', (WidgetTester tester) {
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tester.pumpWidget(new MarkdownBody(data: '# Header'));
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Iterable<Widget> widgets = tester.allWidgets;
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_expectWidgetTypes(widgets, <Type>[MarkdownBody, Column, Container, Padding, RichText]);
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_expectTextStrings(widgets, <String>['Header']);
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});
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testWidgets('Empty string', (WidgetTester tester) {
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tester.pumpWidget(new MarkdownBody(data: ''));
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Iterable<Widget> widgets = tester.allWidgets;
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_expectWidgetTypes(widgets, <Type>[MarkdownBody, Column]);
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});
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testWidgets('Ordered list', (WidgetTester tester) {
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tester.pumpWidget(new MarkdownBody(data: '1. Item 1\n1. Item 2\n2. Item 3'));
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Iterable<Widget> widgets = tester.allWidgets;
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_expectTextStrings(widgets, <String>[
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'1.',
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'Item 1',
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'2.',
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'Item 2',
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'3.',
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'Item 3']
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);
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});
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testWidgets('Unordered list', (WidgetTester tester) {
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tester.pumpWidget(new MarkdownBody(data: '- Item 1\n- Item 2\n- Item 3'));
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Iterable<Widget> widgets = tester.allWidgets;
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_expectTextStrings(widgets, <String>[
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'•',
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'Item 1',
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'•',
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'Item 2',
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'•',
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'Item 3']
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);
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});
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testWidgets('Scrollable wrapping', (WidgetTester tester) {
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tester.pumpWidget(new Markdown(data: ''));
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List<Widget> widgets = tester.allWidgets.toList();
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_expectWidgetTypes(widgets.take(2), <Type>[
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Markdown,
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ScrollableViewport,
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]);
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_expectWidgetTypes(widgets.reversed.take(3).toList().reversed, <Type>[
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Padding,
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MarkdownBody,
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Column
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]);
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});
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testWidgets('Links', (WidgetTester tester) {
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tester.pumpWidget(new Markdown(data: '[Link Text](href)'));
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RichText textWidget = tester.allWidgets.firstWhere((Widget widget) => widget is RichText);
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TextSpan span = textWidget.text;
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expect(span.children[0].recognizer.runtimeType, equals(TapGestureRecognizer));
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});
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testWidgets('Changing config - data', (WidgetTester tester) {
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tester.pumpWidget(new Markdown(data: 'Data1'));
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_expectTextStrings(tester.allWidgets, <String>['Data1']);
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String stateBefore = WidgetsBinding.instance.renderViewElement.toStringDeep();
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tester.pumpWidget(new Markdown(data: 'Data1'));
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String stateAfter = WidgetsBinding.instance.renderViewElement.toStringDeep();
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expect(stateBefore, equals(stateAfter));
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tester.pumpWidget(new Markdown(data: 'Data2'));
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_expectTextStrings(tester.allWidgets, <String>['Data2']);
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});
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testWidgets('Changing config - style', (WidgetTester tester) {
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ThemeData theme = new ThemeData.light();
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MarkdownStyle style1 = new MarkdownStyle.defaultFromTheme(theme);
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MarkdownStyle style2 = new MarkdownStyle.largeFromTheme(theme);
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tester.pumpWidget(new Markdown(data: 'Test', markdownStyle: style1));
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String stateBefore = WidgetsBinding.instance.renderViewElement.toStringDeep();
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tester.pumpWidget(new Markdown(data: 'Test', markdownStyle: style2));
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String stateAfter = WidgetsBinding.instance.renderViewElement.toStringDeep();
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expect(stateBefore, isNot(stateAfter));
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});
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}
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void _expectWidgetTypes(Iterable<Widget> widgets, List<Type> expected) {
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List<Type> actual = widgets.map((Widget w) => w.runtimeType).toList();
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expect(actual, expected);
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}
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void _expectTextStrings(Iterable<Widget> widgets, List<String> strings) {
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int currentString = 0;
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for (Widget widget in widgets) {
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if (widget is RichText) {
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TextSpan span = widget.text;
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String text = _extractTextFromTextSpan(span);
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expect(text, equals(strings[currentString]));
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currentString += 1;
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}
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}
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}
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String _extractTextFromTextSpan(TextSpan span) {
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String text = span.text ?? '';
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if (span.children != null) {
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for (TextSpan child in span.children) {
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text += _extractTextFromTextSpan(child);
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}
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}
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return text;
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}
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