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187 lines
5.6 KiB
Dart
187 lines
5.6 KiB
Dart
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 'widget_tester.dart';
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void main() {
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test('Can construct an empty Stack', () {
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testWidgets((WidgetTester tester) {
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tester.pumpWidget(new Stack(<Widget>[]));
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});
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});
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test('Can construct an empty Centered Stack', () {
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testWidgets((WidgetTester tester) {
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tester.pumpWidget(new Center(child: new Stack(<Widget>[])));
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});
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});
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test('Can change position data', () {
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testWidgets((WidgetTester tester) {
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Key key = new Key('container');
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tester.pumpWidget(
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new Stack(<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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Element container;
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StackParentData parentData;
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container = tester.findElementByKey(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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tester.pumpWidget(
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new Stack(<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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container = tester.findElementByKey(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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});
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});
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test('Can remove parent data', () {
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testWidgets((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(<Widget>[ new Positioned(left: 10.0, child: container) ]));
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Element containerElement = tester.findElementByKey(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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tester.pumpWidget(new Stack(<Widget>[ container ]));
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containerElement = tester.findElementByKey(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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});
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});
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test('Can align non-positioned children', () {
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testWidgets((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(<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.findElementByKey(child0Key);
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final StackParentData child0RenderObjectParentData = child0.renderObject.parentData;
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expect(child0RenderObjectParentData.position, equals(const Point(0.0, 0.0)));
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Element child1 = tester.findElementByKey(child1Key);
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final StackParentData child1RenderObjectParentData = child1.renderObject.parentData;
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expect(child1RenderObjectParentData.position, equals(const Point(5.0, 5.0)));
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});
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});
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test('Can construct an empty IndexedStack', () {
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testWidgets((WidgetTester tester) {
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tester.pumpWidget(new IndexedStack(<Widget>[]));
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});
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});
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test('Can construct an empty Centered IndexedStack', () {
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testWidgets((WidgetTester tester) {
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tester.pumpWidget(new Center(child: new IndexedStack(<Widget>[])));
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});
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});
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test('Can construct an IndexedStack', () {
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testWidgets((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, (i) {
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return new CustomPaint(child: new Text('$i'), onPaint: (_, __) { itemsPainted.add(i); });
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});
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return new Center(child: new IndexedStack(items, index: index));
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}
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tester.pumpWidget(buildFrame(0));
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expect(tester.findText('0'), isNotNull);
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expect(tester.findText('1'), isNotNull);
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expect(tester.findText('2'), isNotNull);
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expect(itemsPainted, equals([0]));
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tester.pumpWidget(buildFrame(1));
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expect(itemsPainted, equals([1]));
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tester.pumpWidget(buildFrame(2));
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expect(itemsPainted, equals([2]));
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});
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});
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test('Can hit test an IndexedStack', () {
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testWidgets((WidgetTester tester) {
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Key key = new Key('indexedStack');
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int itemCount = 3;
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List<int> itemsTapped;
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Widget buildFrame(int index) {
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itemsTapped = <int>[];
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List<Widget> items = new List<Widget>.generate(itemCount, (i) {
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return new GestureDetector(child: new Text('$i'), onTap: () { itemsTapped.add(i); });
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});
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return new Center(child: new IndexedStack(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(tester.findElementByKey(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(tester.findElementByKey(key));
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expect(itemsTapped, [2]);
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});
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});
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}
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