import RT-Thread@9217865c without bsp, libcpu and components/net

examples/utest/testcases/posix/dirent_h/functions/open_read_close_dir_tc.c

@@ -0,0 +1,41 @@
+#include <dirent.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#define DIRFD_TEST_NAME "/"
+
+/* API for: opendir readdir closedir */
+static int dir_test_entry(void)
+{
+    DIR *dirp;
+    struct dirent *d;
+
+    dirp = opendir(DIRFD_TEST_NAME);
+    if (dirp == RT_NULL)
+    {
+        printf("open directory error!\n");
+    }
+    else
+    {
+        while ((d = readdir(dirp)) != RT_NULL)
+        {
+            printf("found %s\n", d->d_name);
+        }
+
+        closedir(dirp);
+    }
+
+    return 0;
+}
+
+#include <utest.h>
+static void test_dir(void)
+{
+    uassert_int_equal(dir_test_entry(), 0);
+}
+static void testcase(void)
+{
+    UTEST_UNIT_RUN(test_dir);
+}
+UTEST_TC_EXPORT(testcase, "posix.dirent_h.open_read_close_dir_tc.c", RT_NULL, RT_NULL, 10);
+