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std/async/deferred_test.ts

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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.import { assertEquals, assertThrowsAsync } from "../testing/asserts.ts";import { deferred } from "./deferred.ts";
Deno.test("[async] deferred: resolve", async function (): Promise<void> { const d = deferred<string>(); d.resolve("🦕"); assertEquals(await d, "🦕");});
Deno.test("[async] deferred: reject", async function (): Promise<void> { const d = deferred<number>(); d.reject(new Error("A deno error 🦕")); await assertThrowsAsync(async () => { await d; });});