diff --git a/tests/subsys/fs/fs_api/src/main.c b/tests/subsys/fs/fs_api/src/main.c
index cf98fb3329f..fcddfb8feb8 100644
--- a/tests/subsys/fs/fs_api/src/main.c
+++ b/tests/subsys/fs/fs_api/src/main.c
@@ -86,7 +86,8 @@ void test_main(void)
 			 ztest_unit_test(test_file_rename),
 			 ztest_unit_test(test_file_stat),
 			 ztest_unit_test(test_file_unlink),
-			 ztest_unit_test_setup_teardown(test_unmount,
+			 ztest_unit_test(test_unmount),
+			 ztest_unit_test_setup_teardown(test_mount_flags,
 							dummy_setup,
 							fs_teardown)
 			 );
diff --git a/tests/subsys/fs/fs_api/src/test_fs.h b/tests/subsys/fs/fs_api/src/test_fs.h
index a927f84cc89..f293b4f3213 100644
--- a/tests/subsys/fs/fs_api/src/test_fs.h
+++ b/tests/subsys/fs/fs_api/src/test_fs.h
@@ -49,4 +49,5 @@ void test_file_rename(void);
 void test_file_stat(void);
 void test_file_unlink(void);
 void test_unmount(void);
+void test_mount_flags(void);
 #endif
diff --git a/tests/subsys/fs/fs_api/src/test_fs_mount_flags.c b/tests/subsys/fs/fs_api/src/test_fs_mount_flags.c
new file mode 100644
index 00000000000..47a17e292ae
--- /dev/null
+++ b/tests/subsys/fs/fs_api/src/test_fs_mount_flags.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2020 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <ztest.h>
+#include "test_fs.h"
+
+static struct test_fs_data test_data;
+
+static struct fs_mount_t mp = {
+		.type = TEST_FS_1,
+		.mnt_point = TEST_FS_MNTP,
+		.fs_data = &test_data,
+};
+
+void test_mount_flags(void)
+{
+	int ret = 0;
+	struct fs_file_t fs = { 0 };
+
+	/* Format volume and add some files/dirs to check read-only flag */
+	mp.flags = 0;
+	ret = fs_mount(&mp);
+	TC_PRINT("Mount to prepare tests\n");
+	zassert_equal(ret, 0, "Expected success", ret);
+	TC_PRINT("Create some file\n");
+	ret = fs_open(&fs, TEST_FS_MNTP"/some", FS_O_CREATE);
+	zassert_equal(ret, 0, "Expected success", ret);
+	fs_close(&fs);
+	TC_PRINT("Create other directory\n");
+	zassert_equal(ret, 0, "Expected success", ret);
+	ret = fs_mkdir(TEST_FS_MNTP"/other");
+	fs_unmount(&mp);
+
+	/* Check fs operation on volume mounted with FS_MOUNT_FLAG_READ_ONLY */
+	mp.flags = FS_MOUNT_FLAG_READ_ONLY;
+	TC_PRINT("Mount as read-only\n");
+	ret = fs_mount(&mp);
+	zassert_equal(ret, 0, "Expected success", ret);
+
+	/* Attempt creating new file */
+	ret = fs_open(&fs, TEST_FS_MNTP"/nosome", FS_O_CREATE);
+	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
+	ret = fs_mkdir(TEST_FS_MNTP"/another");
+	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
+	ret = fs_rename(TEST_FS_MNTP"/some", TEST_FS_MNTP"/nosome");
+	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
+	ret = fs_unlink(TEST_FS_MNTP"/some");
+	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
+	ret = fs_open(&fs, TEST_FS_MNTP"/other", FS_O_CREATE);
+	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
+	ret = fs_open(&fs, TEST_FS_MNTP"/some", FS_O_RDWR);
+	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
+	ret = fs_open(&fs, TEST_FS_MNTP"/some", FS_O_READ);
+	zassert_equal(ret, 0, "Expected success", ret);
+	fs_close(&fs);
+	fs_unmount(&mp);
+}