diff --git a/tests/sys_sysmacros_test.cpp b/tests/sys_sysmacros_test.cpp
new file mode 100644
index 0000000..f17fac5
--- /dev/null
+++ b/tests/sys_sysmacros_test.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2016 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 <sys/sysmacros.h>
+
+#include <gtest/gtest.h>
+
+TEST(sys_sysmacros, makedev) {
+  ASSERT_EQ(0x12345aabbcc678ddULL, makedev(0x12345678, 0xaabbccdd));
+}
+
+TEST(sys_sysmacros, major) {
+  ASSERT_EQ(0x12345678UL, major(0x12345aabbcc678dd));
+}
+
+TEST(sys_sysmacros, minor) {
+  ASSERT_EQ(0xaabbccddUL, minor(0x12345aabbcc678dd));
+}