tests: suppress colors when running tests

tests/test.cc

@@ -4,6 +4,21 @@
 
 #include <type_traits>
 
+#include <catch2/reporters/catch_reporter_event_listener.hpp>
+#include <catch2/reporters/catch_reporter_registrars.hpp>
+
+class TestRunListener : public Catch::EventListenerBase {
+public:
+    using Catch::EventListenerBase::EventListenerBase;
+
+    void testRunStarting(Catch::TestRunInfo const&) override {
+        // writing console colors within test case output breaks Catch2/CLion integration
+        logging::enable_color_codes = false;
+    }
+};
+
+CATCH_REGISTER_LISTENER(TestRunListener)
+
 // test booleans
 TEST_CASE("booleanFlagImplicit", "[settings]")
 {