@shanyue/promise-utils/dist/test/retry.js

Userful promise utils, include map, filter, retry and sleep

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const mocha_1 = require("mocha");
const chai_1 = require("chai");
const index_1 = require("../index");
mocha_1.describe('Promise.retry', function () {
    this.timeout(20000);
    mocha_1.it('expect work', async () => {
        let i = 0;
        const result = 100;
        const data = await index_1.retry(async (attemptNumber) => {
            i++;
            return attemptNumber === 3 ? result : Promise.reject(new Error('error'));
        }, {
            times: 3
        });
        chai_1.expect(data).to.eq(100);
        chai_1.expect(i).to.eq(3);
    });
    mocha_1.it('abort', async () => {
        let i = 0;
        const err = new index_1.AbortError('hello');
        try {
            await index_1.retry(async () => {
                i++;
                return Promise.reject(err);
            }, {
                times: 3
            });
        }
        catch (e) {
            chai_1.expect(e).to.equal(err);
        }
        chai_1.expect(i).to.eq(1);
    });
    mocha_1.it('onFailedAttempt can return a promise to add a delay', async () => {
        const waitFor = 1000;
        const start = Date.now();
        const result = 100;
        let isCalled;
        await index_1.retry(async () => {
            if (isCalled) {
                return result;
            }
            isCalled = true;
            throw new Error('error');
        }, {
            onFailedAttempt: async () => {
                await index_1.sleep(waitFor);
            }
        });
        chai_1.expect(Date.now()).to.gt(start + waitFor);
    });
});
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