abort-utils/dist/promise-race-with-signal.test.js

Utility functions to use and combine `AbortSignal` and `AbortController` with Promises

import { setTimeout } from 'node:timers/promises';
import { it, expect } from 'vitest';
import { promiseRaceWithSignal } from './promise-race-with-signal.js';
it('resolves with promise result when promise wins', async () => {
    const controller = new AbortController();
    const result = promiseRaceWithSignal(Promise.resolve('success'), controller.signal);
    await expect(result).resolves.toBe('success');
});
it('rejects with AbortError when signal aborts first', async () => {
    const result = promiseRaceWithSignal(setTimeout(100, 'too-late'), AbortSignal.timeout(50));
    await expect(result).rejects.toThrow(DOMException);
});
it('resolves when signal aborts first and abortRejects is false', async () => {
    await expect(promiseRaceWithSignal(setTimeout(100, 'too-late'), AbortSignal.timeout(50), { abortRejects: false })).resolves.toBeInstanceOf(DOMException);
});
it('accepts AbortController directly', async () => {
    const controller = new AbortController();
    const result = promiseRaceWithSignal(setTimeout(100, 'too-late'), controller);
    controller.abort('based');
    await expect(result).rejects.toThrow('based');
});
it('propagates promise rejection', async () => {
    const controller = new AbortController();
    await expect(promiseRaceWithSignal(Promise.reject(new Error('test error')), controller.signal)).rejects.toThrow('test error');
});
it('handles already aborted signal', async () => {
    const controller = new AbortController();
    controller.abort();
    const result = promiseRaceWithSignal(setTimeout(100, 'too-late'), controller.signal);
    await expect(result).rejects.toThrow(DOMException);
});
it('handles already aborted signal with abortRejects', async () => {
    const controller = new AbortController();
    controller.abort();
    await expect(promiseRaceWithSignal(setTimeout(100, 'too-late'), controller.signal, { abortRejects: true })).rejects.toThrow(DOMException);
});