diff --git a/test/updater_mock.hpp b/test/updater_mock.hpp
new file mode 100644
index 0000000..d065219
--- /dev/null
+++ b/test/updater_mock.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "updater.hpp"
+
+#include <string>
+
+#include <gmock/gmock.h>
+
+namespace host_tool
+{
+
+class UpdateHandlerMock : public UpdateHandler
+{
+  public:
+    MOCK_METHOD1(checkAvailable, bool(const std::string&));
+    MOCK_METHOD2(sendFile, void(const std::string&, const std::string&));
+    MOCK_METHOD1(verifyFile, bool(const std::string&));
+};
+
+} // namespace host_tool