promisary/dist/utils/hash-settled.test.js

A growing collection of utilities to make working with Promises easier and cleaner.

import { describe, it, expect } from 'vitest';
import { hashSettled } from './hash-settled';
describe('hashSettled', () => {
    it('resolves simple values', async () => {
        const input = { a: 1, b: 2 };
        const result = await hashSettled(input);
        expect(result).toEqual({
            a: { state: 'fulfilled', value: 1 },
            b: { state: 'fulfilled', value: 2 },
        });
    });
    it('resolves promises', async () => {
        const input = {
            a: Promise.resolve(1),
            b: Promise.resolve(2),
        };
        const result = await hashSettled(input);
        expect(result).toEqual({
            a: { state: 'fulfilled', value: 1 },
            b: { state: 'fulfilled', value: 2 },
        });
    });
    it('handles rejected promises', async () => {
        const input = {
            a: Promise.resolve(1),
            b: Promise.reject(new Error('fail')),
        };
        const result = await hashSettled(input);
        expect(result.a).toEqual({ state: 'fulfilled', value: 1 });
        if (result.b.state === 'rejected') {
            expect(result.b.reason).toBeInstanceOf(Error);
            expect(result.b.reason.message).toBe('fail');
        }
        else {
            throw new Error('Expected b to be rejected');
        }
    });
    it('handles null or undefined input', async () => {
        expect(await hashSettled(null)).toEqual({});
        expect(await hashSettled(undefined)).toEqual({});
    });
});