abort-utils/dist/link-controllers.test.js

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

import { it, expect } from 'vitest';
import { linkControllers } from './link-controllers.js';
it('should abort all controllers when one aborts', () => {
    const controller1 = new AbortController();
    const controller2 = new AbortController();
    const controller3 = new AbortController();
    linkControllers(controller1, controller2, controller3);
    expect(controller1.signal.aborted).toBe(false);
    expect(controller2.signal.aborted).toBe(false);
    expect(controller3.signal.aborted).toBe(false);
    const reason = new Error('foo');
    controller2.abort(reason);
    expect(controller1.signal.reason).toBe(reason);
    expect(controller2.signal.reason).toBe(reason);
    expect(controller3.signal.reason).toBe(reason);
});
it('should abort all controllers when one is already aborted', () => {
    const controller1 = new AbortController();
    const controller2 = new AbortController();
    const controller3 = new AbortController();
    const reason = new Error('bad soup');
    controller2.abort(reason);
    linkControllers(controller1, controller2, controller3);
    expect(controller1.signal.aborted).toBe(true);
    expect(controller2.signal.aborted).toBe(true);
    expect(controller3.signal.aborted).toBe(true);
    expect(controller1.signal.reason).toBe(reason);
    expect(controller2.signal.reason).toBe(reason);
    expect(controller3.signal.reason).toBe(reason);
});
it('should accept and listen to AbortSignals as input', () => {
    const controller1 = new AbortController();
    const controller2 = new AbortController();
    const { signal } = controller2;
    const controller3 = new AbortController();
    linkControllers(controller1, signal, controller3);
    expect(controller1.signal.aborted).toBe(false);
    expect(controller2.signal.aborted).toBe(false);
    expect(controller3.signal.aborted).toBe(false);
    const reason = new Error('foo');
    controller2.abort(reason);
    expect(controller1.signal.reason).toBe(reason);
    expect(controller2.signal.reason).toBe(reason);
    expect(controller3.signal.reason).toBe(reason);
});