blob: 52e3de57f5164b98215d8cd08b5324a2c04df541 [file] [log] [blame]
// 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 'dart:ui' as ui;
import 'package:flutter/rendering.dart';
import 'package:flutter_test/flutter_test.dart';
import 'rendering_tester.dart';
void main() {
TestRenderingFlutterBinding.ensureInitialized();
// Create non-const instances, otherwise tests pass even if the
// operator override is incorrect.
ViewConfiguration createViewConfiguration({
Size size = const Size(20, 20),
double devicePixelRatio = 2.0,
}) {
return ViewConfiguration(size: size, devicePixelRatio: devicePixelRatio);
}
group('RenderView', () {
test('accounts for device pixel ratio in paintBounds', () {
layout(RenderAspectRatio(aspectRatio: 1.0));
pumpFrame();
final Size logicalSize = TestRenderingFlutterBinding.instance.renderView.configuration.size;
final double devicePixelRatio = TestRenderingFlutterBinding.instance.renderView.configuration.devicePixelRatio;
final Size physicalSize = logicalSize * devicePixelRatio;
expect(TestRenderingFlutterBinding.instance.renderView.paintBounds, Offset.zero & physicalSize);
});
test('does not replace the root layer unnecessarily', () {
final ui.FlutterView window = TestWindow(window: RendererBinding.instance.window);
final RenderView view = RenderView(
configuration: createViewConfiguration(),
window: window,
);
final PipelineOwner owner = PipelineOwner();
view.attach(owner);
view.prepareInitialFrame();
final ContainerLayer firstLayer = view.debugLayer!;
view.configuration = createViewConfiguration();
expect(identical(view.debugLayer, firstLayer), true);
view.configuration = createViewConfiguration(devicePixelRatio: 5.0);
expect(identical(view.debugLayer, firstLayer), false);
});
test('does not replace the root layer unnecessarily when window resize', () {
final ui.FlutterView window = TestWindow(window: RendererBinding.instance.window);
final RenderView view = RenderView(
configuration: createViewConfiguration(size: const Size(100.0, 100.0)),
window: window,
);
final PipelineOwner owner = PipelineOwner();
view.attach(owner);
view.prepareInitialFrame();
final ContainerLayer firstLayer = view.debugLayer!;
view.configuration = createViewConfiguration(size: const Size(100.0, 1117.0));
expect(identical(view.debugLayer, firstLayer), true);
});
});
test('ViewConfiguration == and hashCode', () {
final ViewConfiguration viewConfigurationA = createViewConfiguration();
final ViewConfiguration viewConfigurationB = createViewConfiguration();
final ViewConfiguration viewConfigurationC = createViewConfiguration(devicePixelRatio: 3.0);
expect(viewConfigurationA == viewConfigurationB, true);
expect(viewConfigurationA != viewConfigurationC, true);
expect(viewConfigurationA.hashCode, viewConfigurationB.hashCode);
expect(viewConfigurationA.hashCode != viewConfigurationC.hashCode, true);
});
}