1 files changed, 190 insertions, 0 deletions
diff --git a/tests/unit/chmod_test.ts b/tests/unit/chmod_test.ts
new file mode 100644
index 000000000..df3771bbc
--- /dev/null
+++ b/tests/unit/chmod_test.ts
@@ -0,0 +1,190 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import {
+  assert,
+  assertEquals,
+  assertRejects,
+  assertThrows,
+} from "./test_util.ts";
+
+Deno.test(
+  {
+    ignore: Deno.build.os === "windows",
+    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, 0o777);
+
+    const fileInfo = Deno.statSync(filename);
+    assert(fileInfo.mode);
+    assertEquals(fileInfo.mode & 0o777, 0o777);
+  },
+);
+
+Deno.test(
+  {
+    ignore: Deno.build.os === "windows",
+    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://${tempDir}/test.txt`);
+    Deno.writeFileSync(fileUrl, data, { mode: 0o666 });
+
+    Deno.chmodSync(fileUrl, 0o777);
+
+    const fileInfo = Deno.statSync(fileUrl);
+    assert(fileInfo.mode);
+    assertEquals(fileInfo.mode & 0o777, 0o777);
+
+    Deno.removeSync(tempDir, { recursive: true });
+  },
+);
+
+// Check symlink when not on windows
+Deno.test(
+  {
+    ignore: Deno.build.os === "windows",
+    permissions: { read: true, write: true },
+  },
+  function chmodSyncSymlinkSuccess() {
+    const enc = new TextEncoder();
+    const data = enc.encode("Hello");
+    const tempDir = Deno.makeTempDirSync();
+
+    const filename = tempDir + "/test.txt";
+    Deno.writeFileSync(filename, data, { mode: 0o666 });
+    const symlinkName = tempDir + "/test_symlink.txt";
+    Deno.symlinkSync(filename, symlinkName);
+
+    let symlinkInfo = Deno.lstatSync(symlinkName);
+    assert(symlinkInfo.mode);
+    const symlinkMode = symlinkInfo.mode & 0o777; // platform dependent
+
+    Deno.chmodSync(symlinkName, 0o777);
+
+    // Change actual file mode, not symlink
+    const fileInfo = Deno.statSync(filename);
+    assert(fileInfo.mode);
+    assertEquals(fileInfo.mode & 0o777, 0o777);
+    symlinkInfo = Deno.lstatSync(symlinkName);
+    assert(symlinkInfo.mode);
+    assertEquals(symlinkInfo.mode & 0o777, symlinkMode);
+  },
+);
+
+Deno.test({ permissions: { write: true } }, function chmodSyncFailure() {
+  const filename = "/badfile.txt";
+  assertThrows(
+    () => {
+      Deno.chmodSync(filename, 0o777);
+    },
+    Deno.errors.NotFound,
+    `chmod '${filename}'`,
+  );
+});
+
+Deno.test({ permissions: { write: false } }, function chmodSyncPerm() {
+  assertThrows(() => {
+    Deno.chmodSync("/somefile.txt", 0o777);
+  }, Deno.errors.PermissionDenied);
+});
+
+Deno.test(
+  {
+    ignore: Deno.build.os === "windows",
+    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, 0o777);
+
+    const fileInfo = Deno.statSync(filename);
+    assert(fileInfo.mode);
+    assertEquals(fileInfo.mode & 0o777, 0o777);
+  },
+);
+
+Deno.test(
+  {
+    ignore: Deno.build.os === "windows",
+    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://${tempDir}/test.txt`);
+    Deno.writeFileSync(fileUrl, data, { mode: 0o666 });
+
+    await Deno.chmod(fileUrl, 0o777);
+
+    const fileInfo = Deno.statSync(fileUrl);
+    assert(fileInfo.mode);
+    assertEquals(fileInfo.mode & 0o777, 0o777);
+
+    Deno.removeSync(tempDir, { recursive: true });
+  },
+);
+
+// Check symlink when not on windows
+
+Deno.test(
+  {
+    ignore: Deno.build.os === "windows",
+    permissions: { read: true, write: true },
+  },
+  async function chmodSymlinkSuccess() {
+    const enc = new TextEncoder();
+    const data = enc.encode("Hello");
+    const tempDir = Deno.makeTempDirSync();
+
+    const filename = tempDir + "/test.txt";
+    Deno.writeFileSync(filename, data, { mode: 0o666 });
+    const symlinkName = tempDir + "/test_symlink.txt";
+    Deno.symlinkSync(filename, symlinkName);
+
+    let symlinkInfo = Deno.lstatSync(symlinkName);
+    assert(symlinkInfo.mode);
+    const symlinkMode = symlinkInfo.mode & 0o777; // platform dependent
+
+    await Deno.chmod(symlinkName, 0o777);
+
+    // Just change actual file mode, not symlink
+    const fileInfo = Deno.statSync(filename);
+    assert(fileInfo.mode);
+    assertEquals(fileInfo.mode & 0o777, 0o777);
+    symlinkInfo = Deno.lstatSync(symlinkName);
+    assert(symlinkInfo.mode);
+    assertEquals(symlinkInfo.mode & 0o777, symlinkMode);
+  },
+);
+
+Deno.test({ permissions: { write: true } }, async function chmodFailure() {
+  const filename = "/badfile.txt";
+  await assertRejects(
+    async () => {
+      await Deno.chmod(filename, 0o777);
+    },
+    Deno.errors.NotFound,
+    `chmod '${filename}'`,
+  );
+});
+
+Deno.test({ permissions: { write: false } }, async function chmodPerm() {
+  await assertRejects(async () => {
+    await Deno.chmod("/somefile.txt", 0o777);
+  }, Deno.errors.PermissionDenied);
+});