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std/async/retry_test.ts

Deno standard library
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import { retry } from "./retry.ts";import { assert, assertRejects } from "../testing/asserts.ts";
function generateErroringFunction(errorsBeforeSucceeds: number) { let errorCount = 0;
return () => { if (errorCount >= errorsBeforeSucceeds) { return errorCount; } errorCount++; throw `Only errored ${errorCount} times`; };}
Deno.test("[async] retry", async function () { const threeErrors = generateErroringFunction(3); const result = await retry(threeErrors, { minTimeout: 100, }); assert(result === 3);});
Deno.test("[async] retry fails after max errors is passed", async function () { const fiveErrors = generateErroringFunction(5); await assertRejects(() => retry(fiveErrors, { minTimeout: 100, }) );});
Deno.test("[async] retry throws if minTimeout is less than maxTimeout", async function () { await assertRejects(() => retry(() => {}, { minTimeout: 1000, maxTimeout: 100, }) );});