86 lines
2.0 KiB
JavaScript
86 lines
2.0 KiB
JavaScript
import { asyncLock } from '../asyncLock';
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jest.useFakeTimers();
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jest.spyOn(console, 'warn').mockImplementation(() => {});
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describe('asyncLock', () => {
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it('should be able to acquire a new lock', async () => {
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const lock = asyncLock();
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const acquired = await lock.acquire();
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expect(acquired).toBe(true);
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});
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it('should not be able to acquire an acquired lock', async () => {
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const lock = asyncLock();
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await lock.acquire();
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const promise = lock.acquire();
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// advance by default lock timeout
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jest.advanceTimersByTime(15000);
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const acquired = await promise;
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expect(acquired).toBe(false);
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});
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it('should be able to acquire an acquired lock that was released', async () => {
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const lock = asyncLock();
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await lock.acquire();
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const promise = lock.acquire();
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// release the lock in the "future"
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setTimeout(() => lock.release(), 100);
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// advance to the time where the lock will be released
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jest.advanceTimersByTime(100);
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const acquired = await promise;
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expect(acquired).toBe(true);
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});
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it('should accept a timeout for acquire', async () => {
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const lock = asyncLock();
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await lock.acquire();
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const promise = lock.acquire(50);
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/// advance by lock timeout
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jest.advanceTimersByTime(50);
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const acquired = await promise;
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expect(acquired).toBe(false);
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});
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it('should be able to re-acquire a lock after a timeout', async () => {
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const lock = asyncLock();
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await lock.acquire();
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const promise = lock.acquire();
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// advance by default lock timeout
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jest.advanceTimersByTime(15000);
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let acquired = await promise;
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expect(acquired).toBe(false);
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acquired = await lock.acquire();
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expect(acquired).toBe(true);
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});
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it('should suppress "leave called too many times" error', async () => {
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const lock = asyncLock();
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await expect(() => lock.release()).not.toThrow();
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expect(console.warn).toHaveBeenCalledTimes(1);
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expect(console.warn).toHaveBeenCalledWith('leave called too many times.');
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});
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});
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