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denoland-deno/cli/tests/unit_node/stream_test.ts
2024-01-04 20:34:51 +01:00

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TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assert } from "../../../test_util/std/assert/mod.ts";
import { fromFileUrl, relative } from "../../../test_util/std/path/mod.ts";
import { pipeline } from "node:stream/promises";
import { createReadStream, createWriteStream } from "node:fs";
Deno.test("stream/promises pipeline", async () => {
const filePath = relative(
Deno.cwd(),
fromFileUrl(new URL("./testdata/lorem_ipsum.txt", import.meta.url)),
);
const input = createReadStream(filePath);
const output = createWriteStream("lorem_ipsum.txt.copy");
await pipeline(input, output);
const content = Deno.readTextFileSync("lorem_ipsum.txt.copy");
assert(content.startsWith("Lorem ipsum dolor sit amet"));
try {
Deno.removeSync("lorem_ipsum.txt.copy");
} catch {
// pass
}
});