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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertCallbackErrorUncaught } from "../_test_utils.ts";
import { readlink, readlinkSync } from "node:fs";
import { assert, assertEquals } from "@std/assert";
import * as path from "@std/path";
const testDir = Deno.makeTempDirSync();
const oldname = path.join(testDir, "oldname");
const newname = path.join(testDir, "newname");
if (Deno.build.os === "windows") {
Deno.symlinkSync(oldname, newname, { type: "file" });
} else {
Deno.symlinkSync(oldname, newname);
}
Deno.test({
name: "readlinkSuccess",
async fn() {
const data = await new Promise((res, rej) => {
readlink(newname, (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assertEquals(typeof data, "string");
assertEquals(data as string, oldname);
},
});
Deno.test({
name: "readlinkEncodeBufferSuccess",
async fn() {
const data = await new Promise((res, rej) => {
readlink(newname, { encoding: "buffer" }, (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assert(data instanceof Uint8Array);
assertEquals(new TextDecoder().decode(data as Uint8Array), oldname);
},
});
Deno.test({
name: "readlinkSyncSuccess",
fn() {
const data = readlinkSync(newname);
assertEquals(typeof data, "string");
assertEquals(data as string, oldname);
},
});
Deno.test({
name: "readlinkEncodeBufferSuccess",
fn() {
const data = readlinkSync(newname, { encoding: "buffer" });
assert(data instanceof Uint8Array);
assertEquals(new TextDecoder().decode(data as Uint8Array), oldname);
},
});
Deno.test("[std/node/fs] readlink callback isn't called twice if error is thrown", async () => {
const importUrl = new URL("node:fs", import.meta.url);
await assertCallbackErrorUncaught({
prelude: `import { readlink } from ${JSON.stringify(importUrl)}`,
invocation: `readlink(${JSON.stringify(newname)}, `,
});
});
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