public void FuncEval_NoParameter_EvaulatesCorrectly()
{
BuiltInFunctionResolver.FunctionCall fc = ((x, y) => 4);
var funcRes = new BuiltInFunctionResolver(fc, vt);
vt.RegisterResolver("Test", funcRes); //Register the function defined above as "Sqrt"
var theTerm = tp.Parse("Test()");
var result = theTerm.Eval(vt);
Assert.AreEqual(4, result);
}
public void FuncEval_SingleParameter_EvaluatesCorrectly()
{
BuiltInFunctionResolver.FunctionCall fc = ((x, y) => (float)Math.Sqrt(((float)x[0].Eval(vt))));
var funcRes = new BuiltInFunctionResolver(fc, vt);
vt.RegisterResolver("Sqrt", funcRes); //Register the function defined above as "Sqrt"
var theTerm = tp.Parse("Sqrt(9)");
var result = theTerm.Eval(vt);
Assert.AreEqual(3, (float)result);
}
public void FuncEval_MultipleParams_EvaluatesCorrectly()
{
BuiltInFunctionResolver.FunctionCall sqrt = ((x, y) => (float)Math.Sqrt(((float)x[0].Eval(vt))));
var funcRes = new BuiltInFunctionResolver(sqrt, vt);
vt.RegisterResolver("Sqrt", funcRes); //Register the function defined above as "Sqrt"
BuiltInFunctionResolver.FunctionCall pow = ((x, y) => (float)Math.Pow((float)x[0].Eval(vt), (float)x[1].Eval(vt)));
var fr = new BuiltInFunctionResolver(pow, vt);
vt.RegisterResolver("Pow", fr); //Register the function defined above as "Pow"
var theTerm = tp.Parse("Pow(4, Sqrt(4))");
var result = theTerm.Eval(vt);
Assert.AreEqual(16, (float)result);
}
