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improve deferred test (denoland/deno#5459)

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Henry Zhuang 2020-05-16 06:59:44 +10:00 committed by denobot
parent e43474e6d8
commit eec6ed601e
1 changed files with 13 additions and 4 deletions
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17
async/deferred_test.ts
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@ -1,8 +1,17 @@
// 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", function (): Promise<void> {
const d = deferred<number>();
d.resolve(12);
return Promise.resolve();
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;
});
});