diff --git a/hardware_unittest.cc b/hardware_unittest.cc
new file mode 100644
index 0000000..3e49fd5
--- /dev/null
+++ b/hardware_unittest.cc
@@ -0,0 +1,49 @@
+// Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "update_engine/test_utils.h"
+#include "update_engine/hardware.h"
+
+using std::string;
+using std::vector;
+
+namespace chromeos_update_engine {
+
+class HardwareTest : public ::testing::Test {
+ protected:
+  void SetUp() {
+  }
+  void TearDown() {
+  }
+
+  // Hardware object under test.
+  Hardware hwut_;
+};
+
+TEST_F(HardwareTest, BootDeviceTest) {
+  // Pretty lame test...
+  EXPECT_FALSE(hwut_.BootDevice().empty());
+}
+
+TEST_F(HardwareTest, KernelDeviceOfBootDevice) {
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("foo"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda0"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda1"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda2"));
+  EXPECT_EQ("/dev/sda2", hwut_.KernelDeviceOfBootDevice("/dev/sda3"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda4"));
+  EXPECT_EQ("/dev/sda4", hwut_.KernelDeviceOfBootDevice("/dev/sda5"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda6"));
+  EXPECT_EQ("/dev/sda6", hwut_.KernelDeviceOfBootDevice("/dev/sda7"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda8"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/sda9"));
+
+  EXPECT_EQ("/dev/mmcblk0p2", hwut_.KernelDeviceOfBootDevice("/dev/mmcblk0p3"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/mmcblk0p4"));
+
+  EXPECT_EQ("/dev/ubi2", hwut_.KernelDeviceOfBootDevice("/dev/ubi3"));
+  EXPECT_EQ("", hwut_.KernelDeviceOfBootDevice("/dev/ubi4"));
+}
+
+}  // namespace chromeos_update_engine