diff --git a/libfdtrack/fdtrack_test.cpp b/libfdtrack/fdtrack_test.cpp
new file mode 100644
index 0000000..0edf0b8
--- /dev/null
+++ b/libfdtrack/fdtrack_test.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <dlfcn.h>
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <map>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+struct FdtrackFrame {
+  const char* function_name;
+  uint64_t function_offset;
+};
+
+std::map<int, std::vector<FdtrackFrame>> RunFdtrack(std::function<void()> f) {
+  void* libfdtrack = dlopen("libfdtrack.so", RTLD_NOW);
+  if (!libfdtrack) {
+    errx(1, "failed to dlopen libfdtrack.so: %s", dlerror());
+  }
+
+  using fdtrack_callback_t = bool (*)(int fd, const char* const* function_names,
+                                      const uint64_t* function_offsets, size_t count, void* arg);
+  auto fdtrack_iterate = reinterpret_cast<void (*)(fdtrack_callback_t, void* arg)>(
+      dlsym(libfdtrack, "fdtrack_iterate"));
+  if (!fdtrack_iterate) {
+    errx(1, "failed to dlsym fdtrack_iterate");
+  }
+
+  f();
+
+  std::map<int, std::vector<FdtrackFrame>> result;
+  fdtrack_iterate(
+      [](int fd, const char* const* function_names, const uint64_t* function_offsets, size_t count,
+         void* arg) {
+        auto& map = *static_cast<decltype(result)*>(arg);
+        for (size_t i = 0; i < count; ++i) {
+          map[fd].push_back(FdtrackFrame{
+              .function_name = function_names[i],
+              .function_offset = function_offsets[i],
+          });
+        }
+
+        return true;
+      },
+      &result);
+
+  return result;
+}
+
+TEST(fdtrack, open) {
+  static int fd = -1;
+  auto result = RunFdtrack([]() { fd = open("/dev/null", O_RDONLY | O_CLOEXEC); });
+
+  ASSERT_NE(-1, fd);
+  ASSERT_EQ(1, result.size());
+  ASSERT_EQ(fd, result.begin()->first);
+  ASSERT_NE(nullptr, strstr(result.begin()->second.at(0).function_name, "open"));
+}
+
+TEST(fdtrack, close) {
+  static int fd1 = -1;
+  static int fd2 = -1;
+  static int fd3 = -1;
+  auto result = RunFdtrack([]() {
+    fd1 = open("/dev/null", O_RDONLY | O_CLOEXEC);
+    fd2 = open("/dev/null", O_RDONLY | O_CLOEXEC);
+    fd3 = open("/dev/null", O_RDONLY | O_CLOEXEC);
+    close(fd2);
+  });
+
+  ASSERT_NE(-1, fd1);
+  ASSERT_NE(-1, fd2);
+  ASSERT_NE(-1, fd3);
+
+  ASSERT_EQ(2, result.size());
+  ASSERT_EQ(1, result.count(fd1));
+  ASSERT_EQ(1, result.count(fd3));
+
+  ASSERT_NE(nullptr, strstr(result[fd1].at(0).function_name, "open"));
+  ASSERT_NE(nullptr, strstr(result[fd3].at(0).function_name, "open"));
+}