returnZero Green
returnOneNumber Red
returnOnNumber Green
returnSumBasic Red
returnSumBasic Green
returnSumBasic Clean
returnSumWithNewline Green
returnNegativeNumber Red
returnNegativeNumber Green
returnMultipleNegativeNumber Red
returnMultipleNegativeNumber Green
returnNotBigger1000 Red
returnNotBigger1000 Green
returnSumWithDelimiter Red
returnSumWithDelimiter Green
returnSumWithMultipleDelimiters Red
returnSumWithMultipleDelimiters Green
returnSumWithLongMultipleDelimiter Green