update doctest to 2.4.6

untests/CMakeLists.txt

@@ -23,9 +23,9 @@ target_link_libraries(${PROJECT_NAME} enum.hpp)
 target_compile_options(${PROJECT_NAME}
     PRIVATE
     $<$<CXX_COMPILER_ID:MSVC>:
-        /W4>
+        /WX /W4>
     PRIVATE
     $<$<OR:$<CXX_COMPILER_ID:GNU>,$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:
-        -Wall -Wextra -Wpedantic>)
+        -Werror -Wall -Wextra -Wpedantic>)
 
 add_test(${PROJECT_NAME} ${PROJECT_NAME})

untests/doctest/doctest.hpp

@@ -2,10 +2,13 @@
 
 #include "doctest.h"
 
+// https://github.com/onqtam/doctest/issues/126
+#include <iostream>
+
 #define STATIC_CHECK(...)\
     static_assert(__VA_ARGS__, #__VA_ARGS__);\
-    CHECK(__VA_ARGS__);
+    CHECK(__VA_ARGS__)
 
 #define STATIC_CHECK_FALSE(...)\
     static_assert(!(__VA_ARGS__), "!(" #__VA_ARGS__ ")");\
-    CHECK(!(__VA_ARGS__));
+    CHECK(!(__VA_ARGS__))