public void ShouldNotParseText(string text)
        {
            AddNumberFullCover an = new AddNumberFullCover(null);

            int value = an.ParseText(text);

            value.Should().Be(0);
        }
        public void ShouldParseText(string text, int expected)
        {
            AddNumberFullCover an = new AddNumberFullCover(null);

            int value = an.ParseText(text);

            value.Should().Be(expected);
        }