deno/tests/unit/chmod_test.ts
Daniel Osvaldo R e4a47febcd
fix(std/fs): implement chmod on windows (#30436)
Closes #4357

On Windows, `chmod` can only change read and write permissions
(https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/chmod-wchmod?view=msvc-170).
It doesn't implement distinct permissions among group, owner, or others.

Changes in this PR also enables `node:fs`’ `chmod` on Windows and fixes
the `prefer-primordials` lint rule #24236.
2025-08-18 19:06:22 +02:00

195 lines
5.2 KiB
TypeScript

// Copyright 2018-2025 the Deno authors. MIT license.
import {
assert,
assertEquals,
assertRejects,
assertThrows,
} from "./test_util.ts";
let modeAsync: number;
let modeSync: number;
// On Windows chmod is only able to manipulate write permission
if (Deno.build.os === "windows") {
modeAsync = 0o444; // read-only
modeSync = 0o666; // read-write
} else {
modeAsync = 0o777;
modeSync = 0o644;
}
Deno.test(
{
permissions: { read: true, write: true },
},
function chmodSyncSuccess() {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const tempDir = Deno.makeTempDirSync();
const filename = tempDir + "/test.txt";
Deno.writeFileSync(filename, data, { mode: 0o666 });
Deno.chmodSync(filename, modeSync);
const fileInfo = Deno.statSync(filename);
assert(fileInfo.mode);
assertEquals(fileInfo.mode & 0o777, modeSync);
},
);
Deno.test(
{
permissions: { read: true, write: true },
},
function chmodSyncUrl() {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const tempDir = Deno.makeTempDirSync();
const fileUrl = new URL(`file://${tempDir}/test.txt`);
Deno.writeFileSync(fileUrl, data, { mode: 0o666 });
Deno.chmodSync(fileUrl, modeSync);
const fileInfo = Deno.statSync(fileUrl);
assert(fileInfo.mode);
assertEquals(fileInfo.mode & 0o777, modeSync);
Deno.removeSync(tempDir, { recursive: true });
},
);
// Check symlink when not on windows
Deno.test(
{
permissions: { read: true, write: true },
},
function chmodSyncSymlinkSuccess() {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const tempDir = Deno.makeTempDirSync();
const filename = tempDir + "/test.txt";
Deno.writeFileSync(filename, data, { mode: 0o666 });
const symlinkName = tempDir + "/test_symlink.txt";
Deno.symlinkSync(filename, symlinkName);
let symlinkInfo = Deno.lstatSync(symlinkName);
assert(symlinkInfo.mode);
const symlinkMode = symlinkInfo.mode & 0o777; // platform dependent
Deno.chmodSync(symlinkName, modeSync);
// Change actual file mode, not symlink
const fileInfo = Deno.statSync(filename);
assert(fileInfo.mode);
assertEquals(fileInfo.mode & 0o777, modeSync);
symlinkInfo = Deno.lstatSync(symlinkName);
assert(symlinkInfo.mode);
assertEquals(symlinkInfo.mode & 0o777, symlinkMode);
},
);
Deno.test({ permissions: { write: true } }, function chmodSyncFailure() {
const filename = "/badfile.txt";
assertThrows(
() => {
Deno.chmodSync(filename, 0o777);
},
Deno.errors.NotFound,
`chmod '${filename}'`,
);
});
Deno.test({ permissions: { write: false } }, function chmodSyncPerm() {
assertThrows(() => {
Deno.chmodSync("/somefile.txt", 0o777);
}, Deno.errors.NotCapable);
});
Deno.test(
{
permissions: { read: true, write: true },
},
async function chmodSuccess() {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const tempDir = Deno.makeTempDirSync();
const filename = tempDir + "/test.txt";
Deno.writeFileSync(filename, data, { mode: 0o666 });
await Deno.chmod(filename, modeAsync);
const fileInfo = Deno.statSync(filename);
assert(fileInfo.mode);
assertEquals(fileInfo.mode & 0o777, modeAsync);
},
);
Deno.test(
{
permissions: { read: true, write: true },
},
async function chmodUrl() {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const tempDir = Deno.makeTempDirSync();
const fileUrl = new URL(`file://${tempDir}/test.txt`);
Deno.writeFileSync(fileUrl, data, { mode: 0o666 });
await Deno.chmod(fileUrl, modeAsync);
const fileInfo = Deno.statSync(fileUrl);
assert(fileInfo.mode);
assertEquals(fileInfo.mode & 0o777, modeAsync);
Deno.removeSync(tempDir, { recursive: true });
},
);
Deno.test(
{
permissions: { read: true, write: true },
},
async function chmodSymlinkSuccess() {
const enc = new TextEncoder();
const data = enc.encode("Hello");
const tempDir = Deno.makeTempDirSync();
const filename = tempDir + "/test.txt";
Deno.writeFileSync(filename, data, { mode: 0o666 });
const symlinkName = tempDir + "/test_symlink.txt";
Deno.symlinkSync(filename, symlinkName);
let symlinkInfo = Deno.lstatSync(symlinkName);
assert(symlinkInfo.mode);
const symlinkMode = symlinkInfo.mode & 0o777; // platform dependent
await Deno.chmod(symlinkName, modeAsync);
// Just change actual file mode, not symlink
const fileInfo = Deno.statSync(filename);
assert(fileInfo.mode);
assertEquals(fileInfo.mode & 0o777, modeAsync);
symlinkInfo = Deno.lstatSync(symlinkName);
assert(symlinkInfo.mode);
assertEquals(symlinkInfo.mode & 0o777, symlinkMode);
},
);
Deno.test({ permissions: { write: true } }, async function chmodFailure() {
const filename = "/badfile.txt";
await assertRejects(
async () => {
await Deno.chmod(filename, 0o777);
},
Deno.errors.NotFound,
`chmod '${filename}'`,
);
});
Deno.test({ permissions: { write: false } }, async function chmodPerm() {
await assertRejects(async () => {
await Deno.chmod("/somefile.txt", 0o777);
}, Deno.errors.NotCapable);
});