// 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'; final BoxDecoration kBoxDecorationA = new BoxDecoration(); final BoxDecoration kBoxDecorationB = new BoxDecoration(); final BoxDecoration kBoxDecorationC = new BoxDecoration(); class TestComponent extends StatelessComponent { const TestComponent({ this.child }); final Widget child; Widget build(BuildContext context) => child; } void main() { test('RenderObjectWidget smoke test', () { testWidgets((WidgetTester tester) { tester.pumpWidget(new DecoratedBox(decoration: kBoxDecorationA)); OneChildRenderObjectElement element = tester.findElement((Element element) => element is OneChildRenderObjectElement); expect(element, isNotNull); expect(element.renderObject is RenderDecoratedBox, isTrue); RenderDecoratedBox renderObject = element.renderObject; expect(renderObject.decoration, equals(kBoxDecorationA)); expect(renderObject.position, equals(DecorationPosition.background)); tester.pumpWidget(new DecoratedBox(decoration: kBoxDecorationB)); element = tester.findElement((Element element) => element is OneChildRenderObjectElement); expect(element, isNotNull); expect(element.renderObject is RenderDecoratedBox, isTrue); renderObject = element.renderObject; expect(renderObject.decoration, equals(kBoxDecorationB)); expect(renderObject.position, equals(DecorationPosition.background)); }); }); test('RenderObjectWidget can add and remove children', () { testWidgets((WidgetTester tester) { void checkFullTree() { OneChildRenderObjectElement element = tester.findElement((Element element) => element is OneChildRenderObjectElement); expect(element, isNotNull); expect(element.renderObject is RenderDecoratedBox, isTrue); RenderDecoratedBox renderObject = element.renderObject; expect(renderObject.decoration, equals(kBoxDecorationA)); expect(renderObject.position, equals(DecorationPosition.background)); expect(renderObject.child, isNotNull); expect(renderObject.child is RenderDecoratedBox, isTrue); RenderDecoratedBox child = renderObject.child; expect(child.decoration, equals(kBoxDecorationB)); expect(child.position, equals(DecorationPosition.background)); expect(child.child, isNull); } void childBareTree() { OneChildRenderObjectElement element = tester.findElement((Element element) => element is OneChildRenderObjectElement); expect(element, isNotNull); expect(element.renderObject is RenderDecoratedBox, isTrue); RenderDecoratedBox renderObject = element.renderObject; expect(renderObject.decoration, equals(kBoxDecorationA)); expect(renderObject.position, equals(DecorationPosition.background)); expect(renderObject.child, isNull); } tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA, child: new DecoratedBox( decoration: kBoxDecorationB ) )); checkFullTree(); tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA, child: new TestComponent( child: new DecoratedBox( decoration: kBoxDecorationB ) ) )); checkFullTree(); tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA, child: new DecoratedBox( decoration: kBoxDecorationB ) )); checkFullTree(); tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA )); childBareTree(); tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA, child: new TestComponent( child: new TestComponent( child: new DecoratedBox( decoration: kBoxDecorationB ) ) ) )); checkFullTree(); tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA )); childBareTree(); }); }); test('Detached render tree is intact', () { testWidgets((WidgetTester tester) { tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA, child: new DecoratedBox( decoration: kBoxDecorationB, child: new DecoratedBox( decoration: kBoxDecorationC ) ) )); OneChildRenderObjectElement element = tester.findElement((Element element) => element is OneChildRenderObjectElement); expect(element.renderObject is RenderDecoratedBox, isTrue); RenderDecoratedBox parent = element.renderObject; expect(parent.child is RenderDecoratedBox, isTrue); RenderDecoratedBox child = parent.child; expect(child.decoration, equals(kBoxDecorationB)); expect(child.child is RenderDecoratedBox, isTrue); RenderDecoratedBox grandChild = child.child; expect(grandChild.decoration, equals(kBoxDecorationC)); expect(grandChild.child, isNull); tester.pumpWidget(new DecoratedBox( decoration: kBoxDecorationA )); element = tester.findElement((Element element) => element is OneChildRenderObjectElement); expect(element.renderObject is RenderDecoratedBox, isTrue); expect(element.renderObject, equals(parent)); expect(parent.child, isNull); expect(child.parent, isNull); expect(child.decoration, equals(kBoxDecorationB)); expect(child.child, equals(grandChild)); expect(grandChild.parent, equals(child)); expect(grandChild.decoration, equals(kBoxDecorationC)); expect(grandChild.child, isNull); }); }); }