diff --git a/test/eth_unittest.cpp b/test/eth_unittest.cpp
new file mode 100644
index 0000000..f0e4d23
--- /dev/null
+++ b/test/eth_unittest.cpp
@@ -0,0 +1,37 @@
+#include "eth.hpp"
+#include "main.hpp"
+
+#include <cstdint>
+#include <cstring>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#define MAX_IPMI_BUFFER 64
+
+namespace google
+{
+namespace ipmi
+{
+
+TEST(EthCommandTest, ValidRequestReturnsSuccess)
+{
+    // This command requests no input, therefore it will just return what it
+    // knows.
+    std::vector<std::uint8_t> request = {SysOEMCommands::SysGetEthDevice};
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+    const std::uint8_t expectedAnswer[4] = {'e', 't', 'h', '0'};
+
+    EXPECT_EQ(IPMI_CC_OK, GetEthDevice(request.data(), &reply[0], &dataLen));
+    struct EthDeviceReply check;
+    std::memcpy(&check, &reply[0], sizeof(check));
+    EXPECT_EQ(check.subcommand, SysOEMCommands::SysGetEthDevice);
+    EXPECT_EQ(check.channel, 1);
+    EXPECT_EQ(check.if_name_len, sizeof(expectedAnswer));
+    EXPECT_EQ(0, std::memcmp(expectedAnswer, &reply[sizeof(check)],
+                             sizeof(expectedAnswer)));
+}
+
+} // namespace ipmi
+} // namespace google