diff --git a/test/cpld_unittest.cpp b/test/cpld_unittest.cpp
new file mode 100644
index 0000000..1c6caa3
--- /dev/null
+++ b/test/cpld_unittest.cpp
@@ -0,0 +1,54 @@
+#include "cpld.hpp"
+#include "handler_mock.hpp"
+#include "main.hpp"
+
+#include <cstdint>
+#include <tuple>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#define MAX_IPMI_BUFFER 64
+
+using ::testing::Return;
+
+namespace google
+{
+namespace ipmi
+{
+
+TEST(CpldCommandTest, RequestTooSmall)
+{
+    std::vector<std::uint8_t> request = {SysOEMCommands::SysCpldVersion};
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+
+    HandlerMock hMock;
+    EXPECT_EQ(IPMI_CC_REQ_DATA_LEN_INVALID,
+              CpldVersion(request.data(), reply, &dataLen, &hMock));
+}
+
+TEST(CpldCommandTest, ValidRequestReturnsHappy)
+{
+    std::vector<std::uint8_t> request = {SysOEMCommands::SysCpldVersion, 0x04};
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+    std::uint8_t expectedMaj = 0x5;
+    std::uint8_t expectedMin = 0x3;
+    std::uint8_t expectedPt = 0x7;
+    std::uint8_t expectedSbPtr = 0x9;
+
+    HandlerMock hMock;
+    EXPECT_CALL(hMock, getCpldVersion(0x04))
+        .WillOnce(Return(std::make_tuple(expectedMaj, expectedMin, expectedPt,
+                                         expectedSbPtr)));
+
+    EXPECT_EQ(IPMI_CC_OK, CpldVersion(request.data(), reply, &dataLen, &hMock));
+    EXPECT_EQ(expectedMaj, reply[1]);
+    EXPECT_EQ(expectedMin, reply[2]);
+    EXPECT_EQ(expectedPt, reply[3]);
+    EXPECT_EQ(expectedSbPtr, reply[4]);
+}
+
+} // namespace ipmi
+} // namespace google