Index: tests/catch_main.hpp
--- tests/catch_main.hpp.orig
+++ tests/catch_main.hpp
@@ -1,8 +1,10 @@
 #ifndef CATCH_MAIN
 #define CATCH_MAIN
 
+#include <iostream>
+
 #define CATCH_CONFIG_EXTERNAL_INTERFACES
 #define CATCH_CONFIG_MAIN
-#include <catch2/catch.hpp>
+#include <catch2/catch_all.hpp>
 
 #endif // CATCH_MAIN
