text: #define CATCH_CONFIG_MAIN
  #include "catch.hpp"
  
  #include "TransformChar.hpp"
  
  TEST_CASE("Characters are uppercased","[alphanumeric]"){
  	const std::string upper{"ABCDEFGHIJKLMNOPQRSTUVWXYZ"};
  	const std::string lower{"abcdefghijklmnopqrstuvwxyz"};
  
  	for(size_t i{0}; i< upper.size(); ++i)
  	{
  		REQUIRE( transformChar(lower[i]) == std::string{upper[i]});
  	}
  }
  
  TEST_CASE("Digits are transliterated","[alphanumeric]"){
  	REQUIRE( transformChar('0') == "ZERO" );
  	REQUIRE( transformChar('1') == "ONE" );
  	REQUIRE( transformChar('2') == "TWO" );
  	REQUIRE( transformChar('3') == "THREE" );
  	REQUIRE( transformChar('4') == "FOUR" );
  	REQUIRE( transformChar('5') == "FIVE" );
  	REQUIRE( transformChar('6') == "SIX" );
  	REQUIRE( transformChar('7') == "SEVEN" );
  	REQUIRE( transformChar('8') == "EIGHT" );
  	REQUIRE( transformChar('9') == "NINE" );
  }
  
  TEST_CASE("Special characters are removed","[punctuation]"){
  	const std::string punc{".,/[]{}<>)(*&^%$£!_-|`¬\"\\"};
  
  	for(size_t i{0}; i<punc.size(); ++i)
  	{
  		REQUIRE( transformChar(i) == "" );
  	}
  }
  