diff --git a/tests/ftw_test.cpp b/tests/ftw_test.cpp
new file mode 100644
index 0000000..6d3a308
--- /dev/null
+++ b/tests/ftw_test.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+#include "TemporaryFile.h"
+
+#include <ftw.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+void sanity_check_ftw(const char* fpath, const struct stat* sb, int tflag) {
+  ASSERT_TRUE(fpath != NULL);
+  ASSERT_TRUE(sb != NULL);
+  bool is_dir = S_ISDIR(sb->st_mode);
+  ASSERT_TRUE((is_dir && tflag == FTW_D) || (!is_dir && tflag == FTW_F));
+}
+
+void sanity_check_nftw(
+    const char* fpath, const struct stat* sb, int tflag, struct FTW* ftwbuf) {
+  sanity_check_ftw(fpath, sb, tflag);
+  // either the parent dir or the file
+  bool is_dir = S_ISDIR(sb->st_mode);
+  ASSERT_TRUE(
+    (is_dir && ftwbuf->level == 0) || (!is_dir && ftwbuf->level == 1));
+}
+
+int check_ftw(const char* fpath, const struct stat* sb, int tflag) {
+  sanity_check_ftw(fpath, sb, tflag);
+  return 0;
+}
+
+int check_ftw64(const char* fpath, const struct stat64* sb, int tflag) {
+  sanity_check_ftw(fpath, reinterpret_cast<const struct stat*>(sb), tflag);
+  return 0;
+}
+
+int check_nftw(
+  const char* fpath, const struct stat* sb, int tflag, struct FTW* ftwbuf) {
+  sanity_check_nftw(fpath, sb, tflag, ftwbuf);
+  return 0;
+}
+
+int check_nftw64(
+  const char* fpath, const struct stat64* sb, int tflag, struct FTW* ftwbuf) {
+  sanity_check_nftw(fpath, reinterpret_cast<const struct stat*>(sb),
+    tflag, ftwbuf);
+  return 0;
+}
+
+TEST(ftw, ftw) {
+  TemporaryDir td;
+  TemporaryFile tf(td.dirname);
+  ftw(td.dirname, check_ftw, 1);
+}
+
+TEST(ftw, ftw64) {
+  TemporaryDir td;
+  GenericTemporaryFile<mkstemp64> tf(td.dirname);
+  ftw64(td.dirname, check_ftw64, 1);
+}
+
+TEST(ftw, nftw) {
+  TemporaryDir td;
+  TemporaryFile tf(td.dirname);
+  nftw(td.dirname, check_nftw, 1, 0);
+}
+
+TEST(ftw, nftw64) {
+  TemporaryDir td;
+  GenericTemporaryFile<mkstemp64> tf(td.dirname);
+  nftw64(td.dirname, check_nftw64, 1, 0);
+}