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// 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/rendering.dart';
import 'package:flutter/widgets.dart';
import 'package:test/test.dart';
void main() {
test('SizeObserver notices zero size', () {
testWidgets((WidgetTester tester) {
List<Size> results = <Size>[];
tester.pumpWidget(new Center(
child: new SizeObserver(
onSizeChanged: (Size size) { results.add(size); },
child: new Container(width:0.0, height:0.0)
)
));
expect(results, equals([Size.zero]));
tester.pump();
expect(results, equals([Size.zero]));
tester.pumpWidget(new Center(
child: new SizeObserver(
onSizeChanged: (Size size) { results.add(size); },
child: new Container(width:100.0, height:0.0)
)
));
expect(results, equals([Size.zero, const Size(100.0, 0.0)]));
tester.pump();
expect(results, equals([Size.zero, const Size(100.0, 0.0)]));
tester.pumpWidget(new Center(
child: new SizeObserver(
onSizeChanged: (Size size) { results.add(size); },
child: new Container(width:0.0, height:0.0)
)
));
expect(results, equals([Size.zero, const Size(100.0, 0.0), Size.zero]));
tester.pump();
expect(results, equals([Size.zero, const Size(100.0, 0.0), Size.zero]));
tester.pumpWidget(new Center(
child: new SizeObserver(
onSizeChanged: (Size size) { results.add(size); },
child: new Container(width:0.0, height:0.0)
)
));
expect(results, equals([Size.zero, const Size(100.0, 0.0), Size.zero]));
});
});
}