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denoland-deno/tests/unit_node/stream_test.ts
Luca Casonato 49e3ee010c
feat(ext/node): add abort helpers, process & streams fix (#25262)
This commit adds:

- `addAbortListener` in `node:events`
- `aborted` in `node:util`
- `execPath` and `execvArgs` named export from `node:process`
- `getDefaultHighWaterMark` from `node:stream`

The `execPath` is very hacky - because module namespaces can not have
real getters, `execPath` is an object with a `toString()` method that on
call returns the actual `execPath`, and replaces the `execPath` binding
with the string. This is done so that we don't require the `execPath`
permission on startup.
2024-09-05 09:22:52 +02:00

32 lines
1.1 KiB
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals } from "@std/assert";
import { fromFileUrl, relative } from "@std/path";
import { pipeline } from "node:stream/promises";
// @ts-expect-error: @types/node is outdated
import { getDefaultHighWaterMark } from "node:stream";
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
}
});
Deno.test("stream getDefaultHighWaterMark", () => {
assertEquals(getDefaultHighWaterMark(false), 16 * 1024);
assertEquals(getDefaultHighWaterMark(true), 16);
});