43 lines
1.1 KiB
Dart
43 lines
1.1 KiB
Dart
import 'package:flutter/animation.dart';
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import 'package:test/test.dart';
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void main() {
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test("Can cancel queued callback", () {
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int secondId;
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bool firstCallbackRan = false;
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bool secondCallbackRan = false;
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void firstCallback(Duration timeStamp) {
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expect(firstCallbackRan, isFalse);
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expect(secondCallbackRan, isFalse);
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expect(timeStamp.inMilliseconds, equals(16));
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firstCallbackRan = true;
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scheduler.cancelAnimationFrame(secondId);
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}
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void secondCallback(Duration timeStamp) {
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expect(firstCallbackRan, isTrue);
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expect(secondCallbackRan, isFalse);
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expect(timeStamp.inMilliseconds, equals(16));
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secondCallbackRan = true;
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}
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scheduler.requestAnimationFrame(firstCallback);
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secondId = scheduler.requestAnimationFrame(secondCallback);
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scheduler.beginFrame(const Duration(milliseconds: 16));
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expect(firstCallbackRan, isTrue);
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expect(secondCallbackRan, isFalse);
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firstCallbackRan = false;
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secondCallbackRan = false;
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scheduler.beginFrame(const Duration(milliseconds: 32));
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expect(firstCallbackRan, isFalse);
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expect(secondCallbackRan, isFalse);
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});
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}
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