// Copyright 2019 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/foundation.dart'; import 'package:flutter/gestures.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:flutter/material.dart'; import '../services/fake_platform_views.dart'; import 'rendering_tester.dart'; void main() { group('PlatformViewRenderBox', () { FakePlatformViewController fakePlatformViewController; PlatformViewRenderBox platformViewRenderBox; setUp((){ fakePlatformViewController = FakePlatformViewController(0); platformViewRenderBox = PlatformViewRenderBox( controller: fakePlatformViewController, hitTestBehavior: PlatformViewHitTestBehavior.opaque, gestureRecognizers: <Factory<OneSequenceGestureRecognizer>>{ Factory<VerticalDragGestureRecognizer>( () { return VerticalDragGestureRecognizer(); }, ), },); }); test('layout should size to max constraint', () { layout(platformViewRenderBox); platformViewRenderBox.layout(const BoxConstraints(minWidth: 50, minHeight: 50, maxWidth: 100, maxHeight: 100)); expect(platformViewRenderBox.size, const Size(100, 100)); }); test('send semantics update if id is changed', (){ final RenderObject tree = RenderConstrainedBox( additionalConstraints: const BoxConstraints.tightFor(height: 20.0, width: 20.0), child: platformViewRenderBox, ); int semanticsUpdateCount = 0; final SemanticsHandle semanticsHandle = renderer.pipelineOwner.ensureSemantics( listener: () { ++semanticsUpdateCount; } ); layout(tree, phase: EnginePhase.flushSemantics); // Initial semantics update expect(semanticsUpdateCount, 1); semanticsUpdateCount = 0; // Request semantics update even though nothing changed. platformViewRenderBox.markNeedsSemanticsUpdate(); pumpFrame(phase: EnginePhase.flushSemantics); expect(semanticsUpdateCount, 0); semanticsUpdateCount = 0; final FakePlatformViewController updatedFakePlatformViewController = FakePlatformViewController(10); platformViewRenderBox.controller = updatedFakePlatformViewController; pumpFrame(phase: EnginePhase.flushSemantics); // Update id should update the semantics. expect(semanticsUpdateCount, 1); semanticsHandle.dispose(); }); }); }