Add:创建 flutter go web 版

2025-07-15 03:04:25 +08:00 · 2019-08-13 20:38:46 +08:00
parent 64513b59c1
commit da67ccf5a8
1656 changed files with 483653 additions and 0 deletions
--- a/packages/flutter_web/test/widgets/layout_builder_test.dart
+++ b/packages/flutter_web/test/widgets/layout_builder_test.dart
@ -0,0 +1,149 @@
+// 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_web_test/flutter_web_test.dart';
+import 'package:flutter_web/rendering.dart';
+import 'package:flutter_web/widgets.dart';
+
+void main() {
+  testWidgets('LayoutBuilder parent size', (WidgetTester tester) async {
+    Size layoutBuilderSize;
+    final Key childKey = UniqueKey();
+    final Key parentKey = UniqueKey();
+
+    await tester.pumpWidget(Center(
+        child: ConstrainedBox(
+            constraints:
+                const BoxConstraints(maxWidth: 100.0, maxHeight: 200.0),
+            child: LayoutBuilder(
+                key: parentKey,
+                builder: (BuildContext context, BoxConstraints constraints) {
+                  layoutBuilderSize = constraints.biggest;
+                  return SizedBox(
+                      key: childKey,
+                      width: layoutBuilderSize.width / 2.0,
+                      height: layoutBuilderSize.height / 2.0);
+                }))));
+
+    expect(layoutBuilderSize, const Size(100.0, 200.0));
+    final RenderBox parentBox = tester.renderObject(find.byKey(parentKey));
+    expect(parentBox.size, equals(const Size(50.0, 100.0)));
+    final RenderBox childBox = tester.renderObject(find.byKey(childKey));
+    expect(childBox.size, equals(const Size(50.0, 100.0)));
+  });
+
+  testWidgets('LayoutBuilder stateful child', (WidgetTester tester) async {
+    Size layoutBuilderSize;
+    StateSetter setState;
+    final Key childKey = UniqueKey();
+    final Key parentKey = UniqueKey();
+    double childWidth = 10.0;
+    double childHeight = 20.0;
+
+    await tester.pumpWidget(Center(
+        child: LayoutBuilder(
+            key: parentKey,
+            builder: (BuildContext context, BoxConstraints constraints) {
+              layoutBuilderSize = constraints.biggest;
+              return StatefulBuilder(
+                  builder: (BuildContext context, StateSetter setter) {
+                setState = setter;
+                return SizedBox(
+                    key: childKey, width: childWidth, height: childHeight);
+              });
+            })));
+
+    expect(layoutBuilderSize, equals(const Size(800.0, 600.0)));
+    RenderBox parentBox = tester.renderObject(find.byKey(parentKey));
+    expect(parentBox.size, equals(const Size(10.0, 20.0)));
+    RenderBox childBox = tester.renderObject(find.byKey(childKey));
+    expect(childBox.size, equals(const Size(10.0, 20.0)));
+
+    setState(() {
+      childWidth = 100.0;
+      childHeight = 200.0;
+    });
+    await tester.pump();
+    parentBox = tester.renderObject(find.byKey(parentKey));
+    expect(parentBox.size, equals(const Size(100.0, 200.0)));
+    childBox = tester.renderObject(find.byKey(childKey));
+    expect(childBox.size, equals(const Size(100.0, 200.0)));
+  });
+
+  testWidgets('LayoutBuilder stateful parent', (WidgetTester tester) async {
+    Size layoutBuilderSize;
+    StateSetter setState;
+    final Key childKey = UniqueKey();
+    double childWidth = 10.0;
+    double childHeight = 20.0;
+
+    await tester.pumpWidget(Center(child:
+        StatefulBuilder(builder: (BuildContext context, StateSetter setter) {
+      setState = setter;
+      return SizedBox(
+          width: childWidth,
+          height: childHeight,
+          child: LayoutBuilder(
+              builder: (BuildContext context, BoxConstraints constraints) {
+            layoutBuilderSize = constraints.biggest;
+            return SizedBox(
+                key: childKey,
+                width: layoutBuilderSize.width,
+                height: layoutBuilderSize.height);
+          }));
+    })));
+
+    expect(layoutBuilderSize, equals(const Size(10.0, 20.0)));
+    RenderBox box = tester.renderObject(find.byKey(childKey));
+    expect(box.size, equals(const Size(10.0, 20.0)));
+
+    setState(() {
+      childWidth = 100.0;
+      childHeight = 200.0;
+    });
+    await tester.pump();
+    box = tester.renderObject(find.byKey(childKey));
+    expect(box.size, equals(const Size(100.0, 200.0)));
+  });
+
+  testWidgets(
+      'LayoutBuilder and Inherited -- do not rebuild when not using inherited',
+      (WidgetTester tester) async {
+    int built = 0;
+    final Widget target = LayoutBuilder(
+        builder: (BuildContext context, BoxConstraints constraints) {
+      built += 1;
+      return Container();
+    });
+    expect(built, 0);
+
+    await tester.pumpWidget(MediaQuery(
+        data: const MediaQueryData(size: Size(400.0, 300.0)), child: target));
+    expect(built, 1);
+
+    await tester.pumpWidget(MediaQuery(
+        data: const MediaQueryData(size: Size(300.0, 400.0)), child: target));
+    expect(built, 1);
+  });
+
+  testWidgets('LayoutBuilder and Inherited -- do rebuild when using inherited',
+      (WidgetTester tester) async {
+    int built = 0;
+    final Widget target = LayoutBuilder(
+        builder: (BuildContext context, BoxConstraints constraints) {
+      built += 1;
+      MediaQuery.of(context);
+      return Container();
+    });
+    expect(built, 0);
+
+    await tester.pumpWidget(MediaQuery(
+        data: const MediaQueryData(size: Size(400.0, 300.0)), child: target));
+    expect(built, 1);
+
+    await tester.pumpWidget(MediaQuery(
+        data: const MediaQueryData(size: Size(300.0, 400.0)), child: target));
+    expect(built, 2);
+  });
+}