Add:创建 flutter go web 版

packages/flutter_web/test/widgets/animated_padding_test.dart

@@ -0,0 +1,63 @@
+// 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('AnimatedPadding.debugFillProperties',
+      (WidgetTester tester) async {
+    final AnimatedPadding padding = AnimatedPadding(
+      padding: const EdgeInsets.all(7.0),
+      curve: Curves.ease,
+      duration: const Duration(milliseconds: 200),
+    );
+
+    expect(padding, hasOneLineDescription);
+  });
+
+  testWidgets('AnimatedPadding padding visual-to-directional animation',
+      (WidgetTester tester) async {
+    final Key target = UniqueKey();
+
+    await tester.pumpWidget(
+      Directionality(
+        textDirection: TextDirection.rtl,
+        child: AnimatedPadding(
+          duration: const Duration(milliseconds: 200),
+          padding: const EdgeInsets.only(right: 50.0),
+          child: SizedBox.expand(key: target),
+        ),
+      ),
+    );
+
+    expect(tester.getSize(find.byKey(target)), const Size(750.0, 600.0));
+    expect(tester.getTopRight(find.byKey(target)), const Offset(750.0, 0.0));
+
+    await tester.pumpWidget(
+      Directionality(
+        textDirection: TextDirection.rtl,
+        child: AnimatedPadding(
+          duration: const Duration(milliseconds: 200),
+          padding: const EdgeInsetsDirectional.only(start: 100.0),
+          child: SizedBox.expand(key: target),
+        ),
+      ),
+    );
+
+    expect(tester.getSize(find.byKey(target)), const Size(750.0, 600.0));
+    expect(tester.getTopRight(find.byKey(target)), const Offset(750.0, 0.0));
+
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(tester.getSize(find.byKey(target)), const Size(725.0, 600.0));
+    expect(tester.getTopRight(find.byKey(target)), const Offset(725.0, 0.0));
+
+    await tester.pump(const Duration(milliseconds: 500));
+
+    expect(tester.getSize(find.byKey(target)), const Size(700.0, 600.0));
+    expect(tester.getTopRight(find.byKey(target)), const Offset(700.0, 0.0));
+  });
+}