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// 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 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('SharedAppData basics', (WidgetTester tester) async {
int columnBuildCount = 0;
int child1BuildCount = 0;
int child2BuildCount = 0;
late void Function(BuildContext context) setSharedAppDataValue;
await tester.pumpWidget(
Directionality(
textDirection: TextDirection.ltr,
child: SharedAppData(
child: Builder(
builder: (BuildContext context) {
columnBuildCount += 1;
return GestureDetector(
behavior: HitTestBehavior.opaque,
onTap: () {
setSharedAppDataValue.call(context);
},
child: Column(
children: <Widget>[
Builder(
builder: (BuildContext context) {
child1BuildCount += 1;
return Text(SharedAppData.getValue<String, String>(context, 'child1Text', () => 'null'));
},
),
Builder(
builder: (BuildContext context) {
child2BuildCount += 1;
return Text(SharedAppData.getValue<String, String>(context, 'child2Text', () => 'null'));
}
),
],
),
);
},
),
),
),
);
expect(columnBuildCount, 1);
expect(child1BuildCount, 1);
expect(child2BuildCount, 1);
expect(find.text('null').evaluate().length, 2);
// SharedAppData.setValue<String, String>(context, 'child1Text', 'child1')
// causes the first Text widget to be rebuilt with its text to be
// set to 'child1'. Nothing else is rebuilt.
setSharedAppDataValue = (BuildContext context) {
SharedAppData.setValue<String, String>(context, 'child1Text', 'child1');
};
await tester.tap(find.byType(GestureDetector));
await tester.pump();
expect(columnBuildCount, 1);
expect(child1BuildCount, 2);
expect(child2BuildCount, 1);
expect(find.text('child1'), findsOneWidget);
expect(find.text('null'), findsOneWidget);
// SharedAppData.setValue<String, String>(context, 'child2Text', 'child1')
// causes the second Text widget to be rebuilt with its text to be
// set to 'child2'. Nothing else is rebuilt.
setSharedAppDataValue = (BuildContext context) {
SharedAppData.setValue<String, String>(context, 'child2Text', 'child2');
};
await tester.tap(find.byType(GestureDetector));
await tester.pump();
expect(columnBuildCount, 1);
expect(child1BuildCount, 2);
expect(child2BuildCount, 2);
expect(find.text('child1'), findsOneWidget);
expect(find.text('child2'), findsOneWidget);
// Resetting a key's value to the same value does not
// cause any widgets to be rebuilt.
setSharedAppDataValue = (BuildContext context) {
SharedAppData.setValue<String, String>(context, 'child1Text', 'child1');
SharedAppData.setValue<String, String>(context, 'child2Text', 'child2');
};
await tester.tap(find.byType(GestureDetector));
await tester.pump();
expect(columnBuildCount, 1);
expect(child1BuildCount, 2);
expect(child2BuildCount, 2);
// More of the same, resetting the values to null..
setSharedAppDataValue = (BuildContext context) {
SharedAppData.setValue<String, String>(context, 'child1Text', 'null');
};
await tester.tap(find.byType(GestureDetector));
await tester.pump();
expect(columnBuildCount, 1);
expect(child1BuildCount, 3);
expect(child2BuildCount, 2);
expect(find.text('null'), findsOneWidget);
expect(find.text('child2'), findsOneWidget);
setSharedAppDataValue = (BuildContext context) {
SharedAppData.setValue<String, String>(context, 'child2Text', 'null');
};
await tester.tap(find.byType(GestureDetector));
await tester.pump();
expect(columnBuildCount, 1);
expect(child1BuildCount, 3);
expect(child2BuildCount, 3);
expect(find.text('null').evaluate().length, 2);
});
testWidgets('WidgetsApp SharedAppData ', (WidgetTester tester) async {
int parentBuildCount = 0;
int childBuildCount = 0;
await tester.pumpWidget(
WidgetsApp(
color: const Color(0xff00ff00),
builder: (BuildContext context, Widget? child) {
parentBuildCount += 1;
return GestureDetector(
behavior: HitTestBehavior.opaque,
onTap: () {
SharedAppData.setValue<String, String>(context, 'childText', 'child');
},
child: Center(
child: Builder(
builder: (BuildContext context) {
childBuildCount += 1;
return Text(SharedAppData.getValue<String, String>(context, 'childText', () => 'null'));
},
),
),
);
},
),
);
expect(find.text('null'), findsOneWidget);
expect(parentBuildCount, 1);
expect(childBuildCount, 1);
await tester.tap(find.byType(GestureDetector));
await tester.pump();
expect(parentBuildCount, 1);
expect(childBuildCount, 2);
expect(find.text('child'), findsOneWidget);
});
testWidgets('WidgetsApp SharedAppData Shadowing', (WidgetTester tester) async {
int innerTapCount = 0;
int outerTapCount = 0;
await tester.pumpWidget(
WidgetsApp(
color: const Color(0xff00ff00),
builder: (BuildContext context, Widget? child) {
return GestureDetector(
behavior: HitTestBehavior.opaque,
onTap: () {
outerTapCount += 1;
SharedAppData.setValue<String, String>(context, 'childText', 'child');
},
child: Center(
child: SharedAppData(
child: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
innerTapCount += 1;
SharedAppData.setValue<String, String>(context, 'childText', 'child');
},
child: Text(SharedAppData.getValue<String, String>(context, 'childText', () => 'null')),
);
},
),
),
),
);
},
),
);
expect(find.text('null'), findsOneWidget);
await tester.tapAt(const Offset(10, 10));
await tester.pump();
expect(outerTapCount, 1);
expect(innerTapCount, 0);
expect(find.text('null'), findsOneWidget);
await tester.tap(find.text('null'));
await tester.pump();
expect(outerTapCount, 1);
expect(innerTapCount, 1);
expect(find.text('child'), findsOneWidget);
});
}