private void CheckValidParse(string input, ContentRangeHeaderValue expectedResult)
        {
            var result = ContentRangeHeaderValue.Parse(input);

            Assert.Equal(expectedResult, result);
        }
 public void Parse_SetOfInvalidValueStrings_Throws(string input)
 {
     Assert.Throws <FormatException>(() => ContentRangeHeaderValue.Parse(input));
 }