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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';
import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
void main() {
setUp(() {
WidgetsFlutterBinding.ensureInitialized();
WidgetsBinding.instance.resetEpoch();
});
test('AnimationController with mutating listener', () {
final AnimationController controller = AnimationController(
duration: const Duration(milliseconds: 100),
vsync: const TestVSync(),
);
final List<String> log = <String>[];
void listener1() { log.add('listener1'); }
void listener3() { log.add('listener3'); }
void listener4() { log.add('listener4'); }
void listener2() {
log.add('listener2');
controller.removeListener(listener1);
controller.removeListener(listener3);
controller.addListener(listener4);
}
controller.addListener(listener1);
controller.addListener(listener2);
controller.addListener(listener3);
controller.value = 0.2;
expect(log, <String>['listener1', 'listener2']);
log.clear();
controller.value = 0.3;
expect(log, <String>['listener2', 'listener4']);
log.clear();
controller.value = 0.4;
expect(log, <String>['listener2', 'listener4', 'listener4']);
log.clear();
});
test('AnimationController with mutating status listener', () {
final AnimationController controller = AnimationController(
duration: const Duration(milliseconds: 100),
vsync: const TestVSync(),
);
final List<String> log = <String>[];
void listener1(AnimationStatus status) { log.add('listener1'); }
void listener3(AnimationStatus status) { log.add('listener3'); }
void listener4(AnimationStatus status) { log.add('listener4'); }
void listener2(AnimationStatus status) {
log.add('listener2');
controller.removeStatusListener(listener1);
controller.removeStatusListener(listener3);
controller.addStatusListener(listener4);
}
controller.addStatusListener(listener1);
controller.addStatusListener(listener2);
controller.addStatusListener(listener3);
controller.forward();
expect(log, <String>['listener1', 'listener2']);
log.clear();
controller.reverse();
expect(log, <String>['listener2', 'listener4']);
log.clear();
controller.forward();
expect(log, <String>['listener2', 'listener4', 'listener4']);
log.clear();
controller.dispose();
});
testWidgetsWithLeakTracking('AnimationController with throwing listener', (WidgetTester tester) async {
final AnimationController controller = AnimationController(
duration: const Duration(milliseconds: 100),
vsync: const TestVSync(),
);
final List<String> log = <String>[];
void listener1() { log.add('listener1'); }
void badListener() {
log.add('badListener');
throw ArgumentError();
}
void listener2() { log.add('listener2'); }
controller.addListener(listener1);
controller.addListener(badListener);
controller.addListener(listener2);
controller.value = 0.2;
expect(log, <String>['listener1', 'badListener', 'listener2']);
expect(tester.takeException(), isArgumentError);
log.clear();
});
testWidgetsWithLeakTracking('AnimationController with throwing status listener', (WidgetTester tester) async {
final AnimationController controller = AnimationController(
duration: const Duration(milliseconds: 100),
vsync: const TestVSync(),
);
final List<String> log = <String>[];
void listener1(AnimationStatus status) { log.add('listener1'); }
void badListener(AnimationStatus status) {
log.add('badListener');
throw ArgumentError();
}
void listener2(AnimationStatus status) { log.add('listener2'); }
controller.addStatusListener(listener1);
controller.addStatusListener(badListener);
controller.addStatusListener(listener2);
controller.forward();
expect(log, <String>['listener1', 'badListener', 'listener2']);
expect(tester.takeException(), isArgumentError);
log.clear();
controller.dispose();
});
}