Clang: Disable logging by default in unit tests

Change-Id: I489cec1dcbcfba71dfa6679e8d90bbf8c8d0a867
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

tests/unit/unittest/main.cpp

@@ -33,6 +33,7 @@
 #include <cmbmessages.h>
 
 #include <QCoreApplication>
+#include <QLoggingCategory>
 
 #include <gtest/gtest.h>
 #include "gtest-qt-printing.h"
@@ -44,6 +45,8 @@ int main(int argc, char *argv[])
 
     QCoreApplication application(argc, argv);
 
+    QLoggingCategory::setFilterRules(QStringLiteral("*.info=false\n*.debug=false\n*.warning=false"));
+
     ::testing::InitGoogleTest(&argc, argv);
     return RUN_ALL_TESTS();
 }