1 files changed, 63 insertions, 0 deletions
diff --git a/tests/unit/dir_test.ts b/tests/unit/dir_test.ts
new file mode 100644
index 000000000..4aaadfb12
--- /dev/null
+++ b/tests/unit/dir_test.ts
@@ -0,0 +1,63 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import { assert, assertEquals, assertThrows } from "./test_util.ts";
+
+Deno.test({ permissions: { read: true } }, function dirCwdNotNull() {
+  assert(Deno.cwd() != null);
+});
+
+Deno.test(
+  { permissions: { read: true, write: true } },
+  function dirCwdChdirSuccess() {
+    const initialdir = Deno.cwd();
+    const path = Deno.makeTempDirSync();
+    Deno.chdir(path);
+    const current = Deno.cwd();
+    if (Deno.build.os === "darwin") {
+      assertEquals(current, "/private" + path);
+    } else {
+      assertEquals(current, path);
+    }
+    Deno.chdir(initialdir);
+  },
+);
+
+Deno.test({ permissions: { read: true, write: true } }, function dirCwdError() {
+  // excluding windows since it throws resource busy, while removeSync
+  if (["linux", "darwin"].includes(Deno.build.os)) {
+    const initialdir = Deno.cwd();
+    const path = Deno.makeTempDirSync();
+    Deno.chdir(path);
+    Deno.removeSync(path);
+    try {
+      assertThrows(() => {
+        Deno.cwd();
+      }, Deno.errors.NotFound);
+    } finally {
+      Deno.chdir(initialdir);
+    }
+  }
+});
+
+Deno.test({ permissions: { read: false } }, function dirCwdPermError() {
+  assertThrows(
+    () => {
+      Deno.cwd();
+    },
+    Deno.errors.PermissionDenied,
+    "Requires read access to <CWD>, run again with the --allow-read flag",
+  );
+});
+
+Deno.test(
+  { permissions: { read: true, write: true } },
+  function dirChdirError() {
+    const path = Deno.makeTempDirSync() + "test";
+    assertThrows(
+      () => {
+        Deno.chdir(path);
+      },
+      Deno.errors.NotFound,
+      `chdir '${path}'`,
+    );
+  },
+);