tests: posix: fs: add test suite for rmdir

add test suite for POSIX API rmdir

Signed-off-by: Karthikeyan Krishnasamy <[email protected]>

Author: karthi012

tests/posix/fs/src/test_fs_dir.c

@@ -150,3 +150,30 @@ ZTEST(posix_fs_dir_test, test_fs_readdir_threadsafe)
 	zassert_true(test_mkdir() == TC_PASS);
 	zassert_true(test_lsdir(TEST_DIR, true) == TC_PASS);
 }
+
+/**
+ * @brief Test for POSIX rmdir API
+ *
+ * @details Test creates a new directory through POSIX
+ * mkdir API and remove directory using rmdir.
+ */
+ZTEST(posix_fs_dir_test, test_fs_rmdir)
+{
+#define IRWXG	0070
+	/* Create and remove empty directory */
+	zassert_ok(mkdir(TEST_DIR, IRWXG), "Error creating dir: %d", errno);
+	zassert_ok(rmdir(TEST_DIR), "Error removing dir: %d\n", errno);
+
+	/* Create directory and open a file in the directory
+	 * now removing the directory will fail, test will
+	 * fail in removal of non empty directory
+	 */
+	zassert_ok(mkdir(TEST_DIR, IRWXG), "Error creating dir: %d", errno);
+	zassert_not_equal(open(TEST_DIR_FILE, O_CREAT | O_RDWR), -1,
+			  "Error creating file: %d", errno);
+	zassert_not_ok(rmdir(TEST_DIR), "Error Non empty dir removed");
+	zassert_not_ok(rmdir(""), "Error Invalid path removed");
+	zassert_not_ok(rmdir(NULL), "Error Invalid path removed");
+	zassert_not_ok(rmdir("TEST_DIR."), "Error Invalid path removed");
+	zassert_not_ok(rmdir(TEST_FILE), "Error file removed");
+}