test1ShoulBeReturnI
add test2ShouldBeReturnII
refactor test
add test3ShouldBeReturnIII
add test4ShouldBeIV
add test5ShouldBeV
add test6ShouldBeVI
add test7ShouldBeVII
refactor change case at number more than 5 to reduce number 5 before go next
add test8ShouldBeVIII
add test9ShouldBeIX
add test10->X, 11->XI
refactor test groupingCase
refactor create loop to check number with match with romanChar
create test11-18
create test19->XIX
refactor add 1 is romanNum as I in list
change do while loop to while loop for reduce if number == 0
add test20To49
add test49and50and51