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fix: MuxAsyncIterator throws muxed errors (#6295)

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Fixes #5260
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Kitson Kelly 2020-06-16 02:03:07 +10:00 • committed by GitHub
parent b1893e65f2
commit 490d2a5ca1
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2 changed files with 44 additions and 8 deletions
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27
std/async/mux_async_iterator_test.ts
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@ -1,5 +1,5 @@
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../testing/asserts.ts";
import { assertEquals, assertThrowsAsync } from "../testing/asserts.ts";
import { MuxAsyncIterator } from "./mux_async_iterator.ts";
// eslint-disable-next-line require-await
@ -16,6 +16,12 @@ async function* gen456(): AsyncIterableIterator<number> {
yield 6;
}
// eslint-disable-next-line require-await
async function* genThrows(): AsyncIterableIterator<number> {
yield 7;
throw new Error("something went wrong");
}
Deno.test("[async] MuxAsyncIterator", async function (): Promise<void> {
const mux = new MuxAsyncIterator<number>();
mux.add(gen123());
@ -26,3 +32,22 @@ Deno.test("[async] MuxAsyncIterator", async function (): Promise<void> {
}
assertEquals(results.size, 6);
});
Deno.test({
name: "[async] MuxAsyncIterator throws",
async fn() {
const mux = new MuxAsyncIterator<number>();
mux.add(gen123());
mux.add(genThrows());
const results = new Set();
await assertThrowsAsync(
async () => {
for await (const value of mux) {
results.add(value);
}
},
Error,
"something went wrong"
);
},
});