flutter/packages/unit/test/widget/block_test.dart
Hixie d041f3ead5 More resilient Widget tests
- force the time dilation to 1.0 for the Widget tests, so that a local
  change doesn't break all the tests during development.
- add missing license block to all the files.
- set ui.window.onBeginFrame to null when you use WidgetTester, so that
  the engine doesn't trigger any confusing frames after our fake frames.
2015-11-16 12:29:25 -08:00

68 lines
2.2 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/widgets.dart';
import 'package:test/test.dart';
import '../engine/mock_events.dart';
import 'widget_tester.dart';
final Key blockKey = new Key('test');
void main() {
test('Cannot scroll a non-overflowing block', () {
testWidgets((WidgetTester tester) {
tester.pumpWidget(
new Block(<Widget>[
new Container(
height: 200.0, // less than 600, the height of the test area
child: new Text('Hello')
)
],
key: blockKey)
);
tester.pump(); // for SizeObservers
Point middleOfContainer = tester.getCenter(tester.findText('Hello'));
Point target = tester.getCenter(tester.findElementByKey(blockKey));
TestPointer pointer = new TestPointer();
tester.dispatchEvent(pointer.down(target), target);
tester.dispatchEvent(pointer.move(target + const Offset(0.0, -10.0)), target);
tester.pump(const Duration(milliseconds: 1));
expect(tester.getCenter(tester.findText('Hello')) == middleOfContainer, isTrue);
tester.dispatchEvent(pointer.up(), target);
});
});
test('Can scroll an overflowing block', () {
testWidgets((WidgetTester tester) {
tester.pumpWidget(
new Block(<Widget>[
new Container(
height: 2000.0, // more than 600, the height of the test area
child: new Text('Hello')
)
],
key: blockKey)
);
tester.pump(); // for SizeObservers
Point middleOfContainer = tester.getCenter(tester.findText('Hello'));
Point target = tester.getCenter(tester.findElementByKey(blockKey));
TestPointer pointer = new TestPointer();
tester.dispatchEvent(pointer.down(target), target);
tester.dispatchEvent(pointer.move(target + const Offset(0.0, -10.0)), target);
tester.pump(const Duration(milliseconds: 1));
expect(tester.getCenter(tester.findText('Hello')) == middleOfContainer, isFalse);
tester.dispatchEvent(pointer.up(), target);
});
});
}