Header cleanup.

tests/EnumTests.cpp

@@ -1,7 +1,9 @@
 #ifdef TESTS_BUILD
-#include <cstring>
+#include <stdint.h>
+#include <vector>
 #include "../extern/catch.hpp"
 #include "../src/Enum.hpp"
+#include "../src/MacroUtils.hpp"
 
 ENUM(TestEnum, uint8_t, Val1, Val2, Val3)
 

tests/StringViewTests.cpp

@@ -1,9 +1,13 @@
 #ifdef TESTS_BUILD
 #include <cstring>
 #include <sstream>
+#include <stdint.h>
+#include <string>
 #include <unordered_map>
 #include "../extern/catch.hpp"
-#include "../src/StringView.hpp"
+#include "../src/String/BasicStringView.hpp"
+#include "../src/String/StringView.hpp"
+#include "../src/String/StringViewLiteral.hpp"
 
 TEST_CASE("Initialize compile time", "[Utilities]") {
     static_assert("foo"_cnc.Length() == 3);