Rune Harlyk
46 lines
1.4 KiB
TypeScript
46 lines
1.4 KiB
TypeScript
import { throttler } from '../../src/lib/utilities';
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import { describe, it, expect, beforeEach, afterEach, test, vitest } from 'vitest';
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describe('throttler', () => {
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let throttleInstance: throttler;
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let callback
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beforeEach(() => {
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vitest.useFakeTimers();
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throttleInstance = new throttler();
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callback = vitest.fn();
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});
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afterEach(() => {
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vitest.useRealTimers();
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});
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it('should call the callback function after the specified time', () => {
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throttleInstance.throttle(callback, 1000);
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expect(callback).not.toHaveBeenCalled();
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vitest.advanceTimersByTime(1000);
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expect(callback).toHaveBeenCalledTimes(1);
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});
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it('should not call the callback function if throttle is called again within the timeout period', () => {
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throttleInstance.throttle(callback, 1000);
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throttleInstance.throttle(callback, 1000);
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vitest.advanceTimersByTime(500);
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expect(callback).not.toHaveBeenCalled();
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vitest.advanceTimersByTime(500);
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expect(callback).toHaveBeenCalledTimes(1);
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});
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it('should allow the callback to be called again after the timeout period', () => {
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throttleInstance.throttle(callback, 1000);
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vitest.advanceTimersByTime(1000);
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expect(callback).toHaveBeenCalledTimes(1);
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throttleInstance.throttle(callback, 1000);
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vitest.advanceTimersByTime(1000);
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expect(callback).toHaveBeenCalledTimes(2);
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});
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}); |