| // Copyright 2014 The Flutter 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/widgets.dart'; |
| |
| void main() { |
| testWidgets('Spacer takes up space.', (WidgetTester tester) async { |
| await tester.pumpWidget(Column( |
| children: const <Widget>[ |
| SizedBox(width: 10.0, height: 10.0), |
| Spacer(), |
| SizedBox(width: 10.0, height: 10.0), |
| ], |
| )); |
| final Rect spacerRect = tester.getRect(find.byType(Spacer)); |
| expect(spacerRect.size, const Size(0.0, 580.0)); |
| expect(spacerRect.topLeft, const Offset(400.0, 10.0)); |
| }); |
| |
| testWidgets('Spacer takes up space proportional to flex.', (WidgetTester tester) async { |
| const Spacer spacer1 = Spacer(); |
| const Spacer spacer2 = Spacer(flex: 1); |
| const Spacer spacer3 = Spacer(flex: 2); |
| const Spacer spacer4 = Spacer(flex: 4); |
| await tester.pumpWidget(Row( |
| textDirection: TextDirection.rtl, |
| children: const <Widget>[ |
| SizedBox(width: 10.0, height: 10.0), |
| spacer1, |
| SizedBox(width: 10.0, height: 10.0), |
| spacer2, |
| SizedBox(width: 10.0, height: 10.0), |
| spacer3, |
| SizedBox(width: 10.0, height: 10.0), |
| spacer4, |
| SizedBox(width: 10.0, height: 10.0), |
| ], |
| )); |
| final Rect spacer1Rect = tester.getRect(find.byType(Spacer).at(0)); |
| final Rect spacer2Rect = tester.getRect(find.byType(Spacer).at(1)); |
| final Rect spacer3Rect = tester.getRect(find.byType(Spacer).at(2)); |
| final Rect spacer4Rect = tester.getRect(find.byType(Spacer).at(3)); |
| expect(spacer1Rect.size.height, 0.0); |
| expect(spacer1Rect.size.width, closeTo(93.8, 0.1)); |
| expect(spacer1Rect.left, closeTo(696.3, 0.1)); |
| expect(spacer2Rect.size.width, closeTo(93.8, 0.1)); |
| expect(spacer2Rect.left, closeTo(592.5, 0.1)); |
| expect(spacer3Rect.size.width, spacer2Rect.size.width * 2.0); |
| expect(spacer3Rect.left, closeTo(395.0, 0.1)); |
| expect(spacer4Rect.size.width, spacer3Rect.size.width * 2.0); |
| expect(spacer4Rect.left, closeTo(10.0, 0.1)); |
| }); |
| |
| testWidgets('Spacer takes up space.', (WidgetTester tester) async { |
| await tester.pumpWidget(UnconstrainedBox( |
| constrainedAxis: Axis.vertical, |
| child: Column( |
| children: const <Widget>[ |
| SizedBox(width: 20.0, height: 10.0), |
| Spacer(), |
| SizedBox(width: 10.0, height: 10.0), |
| ], |
| ), |
| )); |
| final Rect spacerRect = tester.getRect(find.byType(Spacer)); |
| final Rect flexRect = tester.getRect(find.byType(Column)); |
| expect(spacerRect.size, const Size(0.0, 580.0)); |
| expect(spacerRect.topLeft, const Offset(400.0, 10.0)); |
| expect(flexRect, const Rect.fromLTWH(390.0, 0.0, 20.0, 600.0)); |
| }); |
| } |