public void Should_Be_Return_Valid_Result(string firstString, string secondString)
        {
            // Arr
            CheckStringsServices checkStringsServices = new CheckStringsServices();

            // Act
            var arePrimes = checkStringsServices.CheckArePrimes(firstString, secondString);

            // Ass
            arePrimes.Should().BeTrue();
        }
        public void Should_Be_Return_A_Argument_Exception_With_One_Messages(string firstString, string secondString)
        {
            // Arr
            CheckStringsServices checkStringsServices = new CheckStringsServices();

            // Act
            ArgumentException exception = Assert.Throws <ArgumentException>(() => checkStringsServices.CheckArePrimes(firstString, secondString));

            // Ass
            exception.Message.Should().Be("firstString : O valor não pode ser nulo ou vazio.\r\n");
        }