diff --git a/oem/ibm/test/libpldmresponder_fileio_test.cpp b/oem/ibm/test/libpldmresponder_fileio_test.cpp
new file mode 100644
index 0000000..060b0ed
--- /dev/null
+++ b/oem/ibm/test/libpldmresponder_fileio_test.cpp
@@ -0,0 +1,189 @@
+#include "libpldmresponder/file_io.hpp"
+
+#include "libpldm/base.h"
+#include "libpldm/file_io.h"
+
+#include <gmock/gmock-matchers.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#define SD_JOURNAL_SUPPRESS_LOCATION
+
+#include <systemd/sd-journal.h>
+
+std::vector<std::string> logs;
+
+extern "C" {
+
+int sd_journal_send(const char* format, ...)
+{
+    logs.push_back(format);
+    return 0;
+}
+
+int sd_journal_send_with_location(const char* file, const char* line,
+                                  const char* func, const char* format, ...)
+{
+    logs.push_back(format);
+    return 0;
+}
+}
+
+namespace pldm
+{
+
+namespace responder
+{
+
+namespace dma
+{
+
+class MockDMA
+{
+  public:
+    MOCK_METHOD5(transferDataHost,
+                 int(const fs::path& file, uint32_t offset, uint32_t length,
+                     uint64_t address, bool upstream));
+};
+
+} // namespace dma
+} // namespace responder
+} // namespace pldm
+using namespace pldm::responder;
+using ::testing::_;
+using ::testing::Return;
+
+TEST(TransferDataHost, GoodPath)
+{
+    using namespace pldm::responder::dma;
+
+    MockDMA dmaObj;
+    fs::path path("");
+
+    // Minimum length of 16 and expect transferDataHost to be called once
+    // returns the default value of 0 (the return type of transferDataHost is
+    // int, the default value for int is 0)
+    uint32_t length = minSize;
+    EXPECT_CALL(dmaObj, transferDataHost(path, 0, length, 0, true)).Times(1);
+    auto response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY,
+                                         path, 0, length, 0, true);
+    auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_SUCCESS);
+    ASSERT_EQ(0, memcmp(responsePtr->payload + sizeof(responsePtr->payload[0]),
+                        &length, sizeof(length)));
+
+    // maxsize of DMA
+    length = maxSize;
+    EXPECT_CALL(dmaObj, transferDataHost(path, 0, length, 0, true)).Times(1);
+    response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY, path,
+                                    0, length, 0, true);
+    responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_SUCCESS);
+    ASSERT_EQ(0, memcmp(responsePtr->payload + sizeof(responsePtr->payload[0]),
+                        &length, sizeof(length)));
+
+    // length greater than maxsize of DMA
+    length = maxSize + minSize;
+    EXPECT_CALL(dmaObj, transferDataHost(path, 0, maxSize, 0, true)).Times(1);
+    EXPECT_CALL(dmaObj, transferDataHost(path, maxSize, minSize, maxSize, true))
+        .Times(1);
+    response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY, path,
+                                    0, length, 0, true);
+    responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_SUCCESS);
+    ASSERT_EQ(0, memcmp(responsePtr->payload + sizeof(responsePtr->payload[0]),
+                        &length, sizeof(length)));
+
+    // length greater than 2*maxsize of DMA
+    length = 3 * maxSize;
+    EXPECT_CALL(dmaObj, transferDataHost(_, _, _, _, true)).Times(3);
+    response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY, path,
+                                    0, length, 0, true);
+    responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_SUCCESS);
+    ASSERT_EQ(0, memcmp(responsePtr->payload + sizeof(responsePtr->payload[0]),
+                        &length, sizeof(length)));
+
+    // check for downstream(copy data from host to BMC) parameter
+    length = minSize;
+    EXPECT_CALL(dmaObj, transferDataHost(path, 0, length, 0, false)).Times(1);
+    response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY, path,
+                                    0, length, 0, false);
+    responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_SUCCESS);
+    ASSERT_EQ(0, memcmp(responsePtr->payload + sizeof(responsePtr->payload[0]),
+                        &length, sizeof(length)));
+}
+
+TEST(TransferDataHost, BadPath)
+{
+    using namespace pldm::responder::dma;
+
+    MockDMA dmaObj;
+    fs::path path("");
+
+    // Minimum length of 16 and transferDataHost returning a negative errno
+    uint32_t length = minSize;
+    EXPECT_CALL(dmaObj, transferDataHost(_, _, _, _, _)).WillOnce(Return(-1));
+    auto response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY,
+                                         path, 0, length, 0, true);
+    auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_ERROR);
+
+    // length greater than maxsize of DMA and transferDataHost returning a
+    // negative errno
+    length = maxSize + minSize;
+    EXPECT_CALL(dmaObj, transferDataHost(_, _, _, _, _)).WillOnce(Return(-1));
+    response = transferAll<MockDMA>(&dmaObj, PLDM_READ_FILE_INTO_MEMORY, path,
+                                    0, length, 0, true);
+    responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_ERROR);
+}
+
+TEST(ReadFileIntoMemory, BadPath)
+{
+    uint32_t fileHandle = 0;
+    uint32_t offset = 0;
+    uint32_t length = 10;
+    uint64_t address = 0;
+
+    std::array<uint8_t, PLDM_RW_FILE_MEM_REQ_BYTES> requestMsg{};
+    memcpy(requestMsg.data(), &fileHandle, sizeof(fileHandle));
+    memcpy(requestMsg.data() + sizeof(fileHandle), &offset, sizeof(offset));
+    memcpy(requestMsg.data() + sizeof(fileHandle) + sizeof(offset), &length,
+           sizeof(length));
+    memcpy(requestMsg.data() + sizeof(fileHandle) + sizeof(offset) +
+               sizeof(length),
+           &address, sizeof(address));
+
+    // Pass invalid payload length
+    auto response = readFileIntoMemory(requestMsg.data(), 0);
+    auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_ERROR_INVALID_LENGTH);
+}
+
+TEST(WriteFileFromMemory, BadPath)
+{
+    uint32_t fileHandle = 0;
+    uint32_t offset = 0;
+    uint32_t length = 10;
+    uint64_t address = 0;
+
+    std::array<uint8_t, PLDM_RW_FILE_MEM_REQ_BYTES> requestMsg{};
+    memcpy(requestMsg.data(), &fileHandle, sizeof(fileHandle));
+    memcpy(requestMsg.data() + sizeof(fileHandle), &offset, sizeof(offset));
+    memcpy(requestMsg.data() + sizeof(fileHandle) + sizeof(offset), &length,
+           sizeof(length));
+    memcpy(requestMsg.data() + sizeof(fileHandle) + sizeof(offset) +
+               sizeof(length),
+           &address, sizeof(address));
+
+    // Pass invalid payload length
+    auto response = writeFileFromMemory(requestMsg.data(), 0);
+    auto responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_ERROR_INVALID_LENGTH);
+
+    // The length field is not a multiple of DMA minsize
+    response = writeFileFromMemory(requestMsg.data(), requestMsg.size());
+    responsePtr = reinterpret_cast<pldm_msg*>(response.data());
+    ASSERT_EQ(responsePtr->payload[0], PLDM_INVALID_WRITE_LENGTH);
+}