Added tests for char tools

Src/CharTools.h

@@ -8,34 +8,28 @@
 class CharTools {
 public:
     //! Checks whether or not `c` is a vowel. You can define custom vowel characters.
-    static bool IsVowel(const char c, const std::string& vowels = "euioay");
+    static bool IsVowel(const char c, const std::string &vowels = "euioay");
 
     //! Returns whether or not `c` is a letter.
     static bool IsLetter(const char c);
 
-    //! Returns whether or not `c` is a generic character (that contains JUST the sign)
-    static bool IsGeneric(const char c);
+    //! Returns whether or not `c` is a digit.
+    static bool IsDigit(const char c);
 
     //! Checks whether or not `c` is an uppercase character.
     static bool IsUpper(const char c);
 
+    //! Checks whether or not `c` is a lowercase character.
+    static bool IsLower(const char c);
+
     //! Will return `c` as an uppercase character.
     static char MakeUpper(char c);
 
     //! Will return `c` as a lowercase character.
     static char MakeLower(char c);
 
-    //! Will return an empty character with the same sign/capitalization as `c`.
-    static char GetSign(char c);
-
     //! Will return `c` with the same capitalization as `sign`.
     static char CopySign(char sign, char c);
-
-    //! Generic uppercase character.
-    static constexpr char UPPERCASE = 0;
-
-    //! Generic lowercase character.
-    static constexpr char LOWERCASE = (1<<5);
 };
 
 #endif //STRINGTOOLS_CHARTOOLS_H