public static void MutateReplacesAntecedentsWithReplacement(string input, string[] antecedents, string replacement)
        {
            var attribute = new ReplaceAttribute(antecedents)
            {
                Replacement = replacement
            };

            Assert.Equal("This is a nightmare!", attribute.Mutate(input));
        }
        public static void MutateReplacesAntecedentWithNothing(string input, string antecedent)
        {
            var attribute = new ReplaceAttribute(antecedent);

            Assert.Equal("This is a nightmare!", attribute.Mutate(input));
        }