public void should_return_a_blank_space_when_args_is_empty()
        {
            var cmdParam = new CmdParam(new string[] { });

            Assert.AreEqual(" ", cmdParam.GetSeparatorParam());
        }
        public void should_return_given_separator_when_second_parameter_given_the_separator()
        {
            var cmdParam = new CmdParam(new[] { "6", "-", "/x" });

            Assert.AreEqual("-", cmdParam.GetSeparatorParam());
        }
        public void should_return_a_blank_space_when_second_parameter_is_not_exist()
        {
            var cmdParam = new CmdParam(new[] { "6" });

            Assert.AreEqual(" ", cmdParam.GetSeparatorParam());
        }