public void ReturnLengthsAndUppercaseStrings()
        {
            var sut = new StringProcessor();

            var inputStrings = new List <string>
            {
                "Hello",
                "Welcome",
                "Howdy"
            };

            var results = sut.ToUpperAndWithLength(inputStrings);

            Assert.Equal(3, results.Count);
            Assert.Equal("5-HELLO", results[0]);
            Assert.Equal("7-WELCOME", results[1]);
            Assert.Equal("5-HOWDY", results[2]);
        }