2 files changed, 10 insertions, 10 deletions
diff --git a/src/test/testmain.cpp b/src/test/testmain.cpp
index fbd7588ef..cae4aa3b7 100644
--- a/src/test/testmain.cpp
+++ b/src/test/testmain.cpp
@@ -274,7 +274,7 @@ int TestMain::readValue(const int ver, int def)
     return def;
 }
 
-int TestMain::invokeTest(std::string test)
+int TestMain::invokeTest(const std::string &test)
 {
     mConfig.setValue("opengl", static_cast<int>(RENDER_SOFTWARE));
 
@@ -292,7 +292,7 @@ int TestMain::invokeTest4()
     return ret;
 }
 
-int TestMain::invokeSoftwareRenderTest(std::string test)
+int TestMain::invokeSoftwareRenderTest(const std::string &test)
 {
     mConfig.setValue("opengl", static_cast<int>(RENDER_SOFTWARE));
     mConfig.write();
@@ -301,7 +301,7 @@ int TestMain::invokeSoftwareRenderTest(std::string test)
     return ret;
 }
 
-int TestMain::invokeFastOpenGLRenderTest(std::string test)
+int TestMain::invokeFastOpenGLRenderTest(const std::string &test)
 {
     mConfig.setValue("opengl", static_cast<int>(RENDER_NORMAL_OPENGL));
     mConfig.write();
@@ -310,7 +310,7 @@ int TestMain::invokeFastOpenGLRenderTest(std::string test)
     return ret;
 }
 
-int TestMain::invokeFastOpenBatchTest(std::string test)
+int TestMain::invokeFastOpenBatchTest(const std::string &test)
 {
     mConfig.setValue("opengl", static_cast<int>(RENDER_NORMAL_OPENGL));
     mConfig.write();
@@ -319,7 +319,7 @@ int TestMain::invokeFastOpenBatchTest(std::string test)
     return ret;
 }
 
-int TestMain::invokeSafeOpenGLRenderTest(std::string test)
+int TestMain::invokeSafeOpenGLRenderTest(const std::string &test)
 {
     mConfig.setValue("opengl", static_cast<int>(RENDER_SAFE_OPENGL));
     mConfig.write();
diff --git a/src/test/testmain.h b/src/test/testmain.h
index c46e6a1fc..72411417e 100644
--- a/src/test/testmain.h
+++ b/src/test/testmain.h
@@ -50,7 +50,7 @@ class TestMain final
     private:
         void initConfig();
 
-        int invokeTest(std::string test);
+        int invokeTest(const std::string &test);
 
         int invokeTest3();
 
@@ -58,13 +58,13 @@ class TestMain final
 
         int invokeTest7();
 
-        int invokeSoftwareRenderTest(std::string test);
+        int invokeSoftwareRenderTest(const std::string &test);
 
-        int invokeFastOpenGLRenderTest(std::string test);
+        int invokeFastOpenGLRenderTest(const std::string &test);
 
-        int invokeFastOpenBatchTest(std::string test);
+        int invokeFastOpenBatchTest(const std::string &test);
 
-        int invokeSafeOpenGLRenderTest(std::string test);
+        int invokeSafeOpenGLRenderTest(const std::string &test);
 
         void testsMain();