//valid:
/// <summary>
/// test method of the type described in the lectures, i did not actually use this though.
/// </summary>
/// <param name="expression">input string to be evaluated</param>
/// <param name="L">the lookup delegate</param>
/// <param name="expected">expected answer, if after being evaluated the input string and lookup do not equal this then throw an exception</param>
/// <returns></returns>
public static bool ValidTest(string expression, FormulaEvaluatorPS1.Evaluator.Lookup L, int expected)//i don't think that Lookup<string, string> is of the correct form, Lookup alone gives an error,
{
try
{
return(FormulaEvaluatorPS1.Evaluator.Evaluate(expression, L) == expected);
}
catch (Exception)
{
return(false);
}
}
//and then will want to run this test like:
//ValidTest("1+7", "A4/5",...,"(3-4)/0"); and so on
//invalid tests:
/// <summary>
/// invalidity test, also not acutally used, designed to make sure that invalid input does return false and is not permitted to pass
/// </summary>
/// <param name="exp">inputed expression</param>
/// <param name="L">lookup</param>
/// <returns></returns>
public static bool InvalidTest(string exp, FormulaEvaluatorPS1.Evaluator.Lookup L)
{
try
{
FormulaEvaluatorPS1.Evaluator.Evaluate(exp, L);
return(false);
}
catch (ArgumentException)
{
return(true);
}
catch (Exception)
{
return(false);
}
}
