public void EvaluateMultiFunctionWithTwoFunctions()
{
Function func1 = this.MakeFunction("f(0) -> 1.");
Function func2 = this.MakeFunction("f(1) -> 2.");
MultiFunction mfunc = new MultiFunction(new Function[] { func1, func2 });
Assert.AreEqual(2, mfunc.Apply(null, new object[] { 1 }));
}
public void EvaluateMultiFunctionWithOneFunction()
{
Function func = this.MakeFunction("f(0) -> 1.");
MultiFunction mfunc = new MultiFunction(new Function[] { func });
Assert.IsNotNull(mfunc.Functions);
Assert.AreEqual(1, mfunc.Functions.Count);
Assert.AreEqual(1, mfunc.Apply(null, new object[] { 0 }));
}
public void RaiseIfNoClauseToMatch()
{
Function func1 = this.MakeFunction("f(0) -> 1.");
Function func2 = this.MakeFunction("f(1) -> 2.");
MultiFunction mfunc = new MultiFunction(new Function[] { func1, func2 });
try
{
mfunc.Apply(null, new object[] { 2 });
Assert.Fail();
}
catch (Exception ex)
{
Assert.AreEqual("no function clause to match", ex.Message);
}
}