public void ExpressionInterpreterTest()
{
var actual = ExpressionInterpreter.Compute(Parser.Parse("- 2 * z / Math.Pow(2, x * PI)"),
new[] { new ExpressionParameter("x", 1.0), new ExpressionParameter("z", 2.0), new ExpressionParameter("PI", Math.PI), }, (name, parameters) =>
{
switch (name)
{
case "Math.Pow":
{
var args = parameters.Select(Convert.ToDouble).ToList();
if (args.Count != 2)
{
throw new InvalidOperationException("Wrong number of arguments passed to Math.Pow. Expected (double x, double y)");
}
return((decimal)Math.Pow(args[0], args[1]));
}
default:
throw new NotSupportedException(string.Format("Function is not supported: {0}", name));
}
});
Assert.AreEqual(-0.4532589291870443972585070297m, actual);
}
