iox-#590 Try to fix include error on CI

Signed-off-by: Simon Hoinkis <[email protected]>

iceoryx_hoofs/CMakeLists.txt

@@ -99,12 +99,14 @@ if(GTest_FOUND) # only GTest_FOUND, just in case someone want's to use iceoryx_h
         $<INSTALL_INTERFACE:include/${PREFIX}>
     )
 
-    target_link_libraries(iceoryx_hoofs_testing PRIVATE
-        ${CODE_COVERAGE_LIBS}
-        iceoryx_hoofs
-        GTest::gtest
-        GTest::gmock
-        ${CMAKE_DL_LIBS}
+    target_link_libraries(iceoryx_hoofs_testing
+        PUBLIC
+            GTest::gtest
+            GTest::gmock
+        PRIVATE
+            ${CODE_COVERAGE_LIBS}
+            iceoryx_hoofs
+            ${CMAKE_DL_LIBS}
     )
 
     if(LINUX)

iceoryx_hoofs/testing/error_handler_mock.cpp

@@ -19,4 +19,4 @@
 namespace iox
 {
 std::mutex ErrorHandlerMock::handler_mutex;
-} // namespace iox
+} // namespace iox

iceoryx_hoofs/testing/include/iceoryx_hoofs/testing/error_handler_mock.hpp

@@ -18,7 +18,7 @@
 
 #include "iceoryx_hoofs/error_handling/error_handling.hpp"
 
-#include <gtest/gtest.h>
+#include "iceoryx_hoofs/testing/test.hpp"
 
 namespace iox
 {
@@ -31,6 +31,7 @@ class ErrorHandlerMock : protected ErrorHandler
     template <typename Error>
     static cxx::GenericRAII setTemporaryErrorHandler(const TypedHandlerFunction<Error>& newHandler) noexcept;
 
+  protected:
     /// Needed, if you want to exchange the handler. Remember the old one and call it if it is not your error. The error
     /// mock needs to be the last one exchanging the handler in tests.
     static std::mutex handler_mutex;