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42 lines
1.5 KiB
Dart
42 lines
1.5 KiB
Dart
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import 'package:flutter_test/flutter_test.dart';
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import 'package:immich_mobile/utils/debounce.dart';
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class _Counter {
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int _count = 0;
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_Counter();
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int get count => _count;
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void increment() => _count = _count + 1;
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}
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void main() {
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test('Executes the method after the interval', () async {
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var counter = _Counter();
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final debouncer = Debouncer(interval: const Duration(milliseconds: 300));
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debouncer.run(() => counter.increment());
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expect(counter.count, 0);
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await Future.delayed(const Duration(milliseconds: 300));
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expect(counter.count, 1);
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});
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test('Executes the method immediately if zero interval', () async {
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var counter = _Counter();
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final debouncer = Debouncer(interval: const Duration(milliseconds: 0));
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debouncer.run(() => counter.increment());
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// Even though it is supposed to be executed immediately, it is added to the async queue and so
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// we need this delay to make sure the actual debounced method is called
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await Future.delayed(const Duration(milliseconds: 0));
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expect(counter.count, 1);
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});
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test('Delayes method execution after all the calls are completed', () async {
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var counter = _Counter();
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final debouncer = Debouncer(interval: const Duration(milliseconds: 100));
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debouncer.run(() => counter.increment());
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debouncer.run(() => counter.increment());
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debouncer.run(() => counter.increment());
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await Future.delayed(const Duration(milliseconds: 300));
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expect(counter.count, 1);
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});
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}
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