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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals, assertThrows } from "@std/assert";
import { join } from "node:path";
import { tmpdir } from "node:os";
import {
constants,
createWriteStream,
existsSync,
lstatSync,
mkdtempSync,
promises,
readFileSync,
Stats,
statSync,
writeFileSync,
} from "node:fs";
import {
constants as fsPromiseConstants,
cp,
FileHandle,
open,
writeFile,
} from "node:fs/promises";
import process from "node:process";
import { pathToAbsoluteFileUrl } from "../unit/test_util.ts";
Deno.test(
"[node/fs writeFileSync] write file without option",
() => {
const data = "Hello";
const filename = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
writeFileSync(filename, data);
const dataRead = readFileSync(filename, "utf8");
assert(dataRead === "Hello");
},
);
Deno.test(
"[node/fs writeFileSync] write file with option ASCII",
() => {
const data = "Hello";
const filename = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
writeFileSync(filename, data, { encoding: "ascii" });
const dataRead = readFileSync(filename, "utf8");
assert(dataRead === "Hello");
},
);
Deno.test(
"[node/fs writeFileSync] write file throws error when encoding is not implemented",
() => {
const data = "Hello";
const filename = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
assertThrows(
() => writeFileSync(filename, data, { encoding: "utf16le" }),
'The value "utf16le" is invalid for option "encoding"',
);
},
);
Deno.test(
"[node/fs existsSync] path",
{ permissions: { read: true } },
() => {
assert(existsSync("tests/testdata/assets/fixture.json"));
},
);
Deno.test(
"[node/fs existsSync] url",
{ permissions: { read: true } },
() => {
assert(existsSync(
pathToAbsoluteFileUrl("tests/testdata/assets/fixture.json"),
));
},
);
Deno.test(
"[node/fs existsSync] no permission",
{ permissions: { read: false } },
() => {
assertThrows(() => {
existsSync("tests/testdata/assets/fixture.json");
}, Deno.errors.NotCapable);
},
);
Deno.test(
"[node/fs existsSync] not exists",
{ permissions: { read: true } },
() => {
assert(!existsSync("bad_filename"));
},
);
Deno.test(
"[node/fs/promises constants] is the same as from node:fs",
() => {
assertEquals(constants, fsPromiseConstants);
assertEquals(constants, promises.constants);
},
);
Deno.test(
"[node/fs statSync] instanceof fs.Stats",
() => {
const stat = statSync("tests/testdata/assets/fixture.json");
assert(stat);
assert(stat instanceof Stats);
},
);
Deno.test(
"[node/fs/promises cp] copy file",
async () => {
const src = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
const dest = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
writeFileSync(src, "Hello");
await cp(src, dest);
const dataRead = readFileSync(dest, "utf8");
assert(dataRead === "Hello");
},
);
// TODO(kt3k): Delete this test case, and instead enable the compat case
// `test/parallel/test-fs-writestream-open-write.js`, when we update
// `tests/node_compat/runner/suite`.
Deno.test("[node/fs createWriteStream", async () => {
const { promise, resolve, reject } = Promise.withResolvers<void>();
const tempDir = await Deno.makeTempDir();
const file = join(tempDir, "file.txt");
try {
const w = createWriteStream(file);
w.on("open", () => {
w.write("hello, ");
process.nextTick(() => {
w.write("world");
w.end();
});
});
w.on("close", async () => {
try {
assertEquals(await Deno.readTextFile(file), "hello, world");
resolve();
} catch (e) {
reject(e);
}
});
await promise;
} finally {
await Deno.remove(tempDir, { recursive: true });
}
});
Deno.test(
"[node/fs lstatSync] supports throwIfNoEntry option",
() => {
const result = lstatSync("non-existing-path", { throwIfNoEntry: false });
assertEquals(result, undefined);
},
);
// Test for https://github.com/denoland/deno/issues/23707
Deno.test(
"[node/fs/promises read] respect position argument",
async () => {
const file = mkdtempSync(join(tmpdir(), "foo-")) + "/test.bin";
await writeFile(file, "");
const res: number[] = [];
let fd: FileHandle | undefined;
try {
fd = await open(file, "r+");
for (let i = 0; i <= 5; i++) {
const buffer = new Uint8Array([i]);
await fd.write(buffer, 0, 1, i + 10);
}
for (let i = 10; i <= 15; i++) {
const buffer = new Uint8Array(1);
await fd.read(buffer, 0, 1, i);
res.push(Number(buffer.toString()));
}
} finally {
await fd?.close();
}
assertEquals(res, [0, 1, 2, 3, 4, 5]);
},
);
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