1 files changed, 145 insertions, 0 deletions
diff --git a/js/chown_test.ts b/js/chown_test.ts
new file mode 100644
index 000000000..84106d545
--- /dev/null
+++ b/js/chown_test.ts
@@ -0,0 +1,145 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { testPerm, assertEquals } from "./test_util.ts";
+
+// chown on Windows is noop for now, so ignore its testing on Windows
+if (Deno.build.os !== "win") {
+  async function getUidAndGid(): Promise<{ uid: number; gid: number }> {
+    // get the user ID and group ID of the current process
+    const uidProc = Deno.run({
+      stdout: "piped",
+      args: ["python", "-c", "import os; print(os.getuid())"]
+    });
+    const gidProc = Deno.run({
+      stdout: "piped",
+      args: ["python", "-c", "import os; print(os.getgid())"]
+    });
+
+    assertEquals((await uidProc.status()).code, 0);
+    assertEquals((await gidProc.status()).code, 0);
+    const uid = parseInt(
+      new TextDecoder("utf-8").decode(await uidProc.output())
+    );
+    const gid = parseInt(
+      new TextDecoder("utf-8").decode(await gidProc.output())
+    );
+
+    return { uid, gid };
+  }
+
+  testPerm({}, async function chownNoWritePermission(): Promise<void> {
+    const filePath = "chown_test_file.txt";
+    try {
+      await Deno.chown(filePath, 1000, 1000);
+    } catch (e) {
+      assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+      assertEquals(e.name, "PermissionDenied");
+    }
+  });
+
+  testPerm(
+    { run: true, write: true },
+    async function chownSyncFileNotExist(): Promise<void> {
+      const { uid, gid } = await getUidAndGid();
+      const filePath = Deno.makeTempDirSync() + "/chown_test_file.txt";
+
+      try {
+        Deno.chownSync(filePath, uid, gid);
+      } catch (e) {
+        assertEquals(e.kind, Deno.ErrorKind.NotFound);
+        assertEquals(e.name, "NotFound");
+      }
+    }
+  );
+
+  testPerm(
+    { run: true, write: true },
+    async function chownFileNotExist(): Promise<void> {
+      const { uid, gid } = await getUidAndGid();
+      const filePath = (await Deno.makeTempDir()) + "/chown_test_file.txt";
+
+      try {
+        await Deno.chown(filePath, uid, gid);
+      } catch (e) {
+        assertEquals(e.kind, Deno.ErrorKind.NotFound);
+        assertEquals(e.name, "NotFound");
+      }
+    }
+  );
+
+  testPerm({ write: true }, function chownSyncPermissionDenied(): void {
+    const enc = new TextEncoder();
+    const dirPath = Deno.makeTempDirSync();
+    const filePath = dirPath + "/chown_test_file.txt";
+    const fileData = enc.encode("Hello");
+    Deno.writeFileSync(filePath, fileData);
+
+    try {
+      // try changing the file's owner to root
+      Deno.chownSync(filePath, 0, 0);
+    } catch (e) {
+      assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+      assertEquals(e.name, "PermissionDenied");
+    }
+    Deno.removeSync(dirPath, { recursive: true });
+  });
+
+  testPerm({ write: true }, async function chownPermissionDenied(): Promise<
+    void
+  > {
+    const enc = new TextEncoder();
+    const dirPath = await Deno.makeTempDir();
+    const filePath = dirPath + "/chown_test_file.txt";
+    const fileData = enc.encode("Hello");
+    await Deno.writeFile(filePath, fileData);
+
+    try {
+      // try changing the file's owner to root
+      await Deno.chown(filePath, 0, 0);
+    } catch (e) {
+      assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+      assertEquals(e.name, "PermissionDenied");
+    }
+    await Deno.remove(dirPath, { recursive: true });
+  });
+
+  testPerm(
+    { run: true, write: true },
+    async function chownSyncSucceed(): Promise<void> {
+      // TODO: when a file's owner is actually being changed,
+      // chown only succeeds if run under priviledged user (root)
+      // The test script has no such priviledge, so need to find a better way to test this case
+      const { uid, gid } = await getUidAndGid();
+
+      const enc = new TextEncoder();
+      const dirPath = Deno.makeTempDirSync();
+      const filePath = dirPath + "/chown_test_file.txt";
+      const fileData = enc.encode("Hello");
+      Deno.writeFileSync(filePath, fileData);
+
+      // the test script creates this file with the same uid and gid,
+      // here chown is a noop so it succeeds under non-priviledged user
+      Deno.chownSync(filePath, uid, gid);
+
+      Deno.removeSync(dirPath, { recursive: true });
+    }
+  );
+
+  testPerm({ run: true, write: true }, async function chownSucceed(): Promise<
+    void
+  > {
+    // TODO: same as chownSyncSucceed
+    const { uid, gid } = await getUidAndGid();
+
+    const enc = new TextEncoder();
+    const dirPath = await Deno.makeTempDir();
+    const filePath = dirPath + "/chown_test_file.txt";
+    const fileData = enc.encode("Hello");
+    await Deno.writeFile(filePath, fileData);
+
+    // the test script creates this file with the same uid and gid,
+    // here chown is a noop so it succeeds under non-priviledged user
+    await Deno.chown(filePath, uid, gid);
+
+    Deno.removeSync(dirPath, { recursive: true });
+  });
+}