public void RemoveNumberNoKeepCharsTest(string expression, string check)
        {
            string result = NumberAndString.RemoveNumbers(expression);

            Assert.Equal(check, result);
        }
        public void RemoveNumberTest(string expression, string exceptChars, string check)
        {
            string result = NumberAndString.RemoveNumbers(expression, exceptChars);

            Assert.Equal(check, result);
        }
        public void RemoveNumberKeepSapceTest(string expression, string check)
        {
            string result = NumberAndString.RemoveNumbers(expression, true);

            Assert.Equal(check, result);
        }
        public void RemoveTextTest(string expression, string check)
        {
            string result = NumberAndString.RemoveText(expression);

            Assert.Equal(check, result);
        }