diff --git a/test/data_mock.hpp b/test/data_mock.hpp
new file mode 100644
index 0000000..1fd1fae
--- /dev/null
+++ b/test/data_mock.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "data_handler.hpp"
+
+#include <gmock/gmock.h>
+
+namespace blobs
+{
+
+class DataHandlerMock : public DataInterface
+{
+  public:
+    virtual ~DataHandlerMock() = default;
+
+    MOCK_METHOD1(copyFrom, std::vector<std::uint8_t>(std::uint32_t));
+};
+
+} // namespace blobs