1 files changed, 50 insertions, 0 deletions
diff --git a/std/node/_fs/_fs_chown_test.ts b/std/node/_fs/_fs_chown_test.ts
new file mode 100644
index 000000000..51a463d88
--- /dev/null
+++ b/std/node/_fs/_fs_chown_test.ts
@@ -0,0 +1,50 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+const { test } = Deno;
+import { fail, assertEquals } from "../../testing/asserts.ts";
+import { chown, chownSync } from "./_fs_chown.ts";
+
+if (Deno.build.os !== "win") {
+  //chown is difficult to test.  Best we can do is set the existing user id/group id again
+  test({
+    name: "ASYNC: setting existing uid/gid works as expected (non-Windows)",
+    async fn() {
+      const tempFile: string = await Deno.makeTempFile();
+      const originalUserId: number | null = (await Deno.lstat(tempFile)).uid;
+      const originalGroupId: number | null = (await Deno.lstat(tempFile)).gid;
+      await new Promise((resolve, reject) => {
+        chown(tempFile, originalUserId!, originalGroupId!, err => {
+          if (err) reject(err);
+          else resolve();
+        });
+      })
+        .then(() => {
+          const newUserId: number | null = Deno.lstatSync(tempFile).uid;
+          const newGroupId: number | null = Deno.lstatSync(tempFile).gid;
+          assertEquals(newUserId, originalUserId);
+          assertEquals(newGroupId, originalGroupId);
+        })
+        .catch(() => {
+          fail();
+        })
+        .finally(() => {
+          Deno.removeSync(tempFile);
+        });
+    }
+  });
+
+  test({
+    name: "SYNC: setting existing uid/gid works as expected (non-Windows)",
+    fn() {
+      const tempFile: string = Deno.makeTempFileSync();
+      const originalUserId: number | null = Deno.lstatSync(tempFile).uid;
+      const originalGroupId: number | null = Deno.lstatSync(tempFile).gid;
+      chownSync(tempFile, originalUserId!, originalGroupId!);
+
+      const newUserId: number | null = Deno.lstatSync(tempFile).uid;
+      const newGroupId: number | null = Deno.lstatSync(tempFile).gid;
+      assertEquals(newUserId, originalUserId);
+      assertEquals(newGroupId, originalGroupId);
+      Deno.removeSync(tempFile);
+    }
+  });
+}