diff --git a/test/entity_unittest.cpp b/test/entity_unittest.cpp
new file mode 100644
index 0000000..74495c6
--- /dev/null
+++ b/test/entity_unittest.cpp
@@ -0,0 +1,53 @@
+#include "entity_name.hpp"
+#include "handler_mock.hpp"
+#include "main.hpp"
+
+#include <cstdint>
+#include <cstring>
+#include <string>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#define MAX_IPMI_BUFFER 64
+
+using ::testing::Return;
+
+namespace google
+{
+namespace ipmi
+{
+
+TEST(EntityNameCommandTest, InvalidCommandLength)
+{
+    // GetEntityNameRequest is three bytes, let's send 2.
+    std::vector<std::uint8_t> request = {SysOEMCommands::SysEntityName, 0x01};
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+
+    HandlerMock hMock;
+    EXPECT_EQ(IPMI_CC_REQ_DATA_LEN_INVALID,
+              GetEntityName(request.data(), reply, &dataLen, &hMock));
+}
+
+TEST(EntityNameCommandTest, ValidRequest)
+{
+    std::uint8_t entityId = 3;
+    std::uint8_t entityInstance = 5;
+    std::vector<std::uint8_t> request = {SysOEMCommands::SysEntityName,
+                                         entityId, entityInstance};
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+    std::string entityName = "asdf";
+
+    HandlerMock hMock;
+    EXPECT_CALL(hMock, getEntityName(entityId, entityInstance))
+        .WillOnce(Return(entityName));
+    EXPECT_EQ(IPMI_CC_OK,
+              GetEntityName(request.data(), reply, &dataLen, &hMock));
+    EXPECT_EQ(reply[1], entityName.length());
+    EXPECT_EQ(0, std::memcmp(&reply[2], entityName.c_str(), reply[1]));
+}
+
+} // namespace ipmi
+} // namespace google