public void TestBasic()
{
ValueFunctionOverload overload = new ValueFunctionOverload();
IScope scope = new ScopeChain();
{ // add a single function & make sure it's called at right time & fails at right time
ValueFunction numInt = new Add(ValueType.Number, ValueType.Int, 0);
overload.Add(numInt);
Value a = overload.Eval(null, MakePair(3, 4, true, true), scope, scope, null, null);
Assert.AreEqual(7, a.AsInt);
Value b = overload.Eval(null, MakePair(3, 5, false, true), scope, scope, null, null);
Assert.AreEqual(8, b.AsFloat);
bool bThrew = false;
try
{
overload.Eval(null, MakePair(3, 4, false, false), scope, scope, null, null);
}
catch (Loki3Exception)
{
bThrew = true;
}
Assert.IsTrue(bThrew);
}
{ // add a second function & make sure both succeed & fail at right time
// this one is more specific so should get called first when signature matches
ValueFunction intInt = new Add(ValueType.Int, ValueType.Int, 1);
overload.Add(intInt);
Value a = overload.Eval(null, MakePair(3, 4, true, true), scope, scope, null, null);
Assert.AreEqual(8, a.AsInt); // calls 2nd version
Value b = overload.Eval(null, MakePair(3, 5, false, true), scope, scope, null, null);
Assert.AreEqual(8, b.AsFloat); // calls 1st version
bool bThrew = false;
try
{ // still no match for this one
overload.Eval(null, MakePair(3, 4, false, false), scope, scope, null, null);
}
catch (Loki3Exception)
{
bThrew = true;
}
Assert.IsTrue(bThrew);
}
{ // try adding a postfix function to the overload
bool bThrew = false;
try
{
ValueFunction post = new Post();
overload.Add(post);
}
catch (Loki3Exception e)
{
Assert.AreEqual("prefix", e.Errors[Loki3Exception.keyExpectedFix].ToString());
Assert.AreEqual("postfix", e.Errors[Loki3Exception.keyActualFix].ToString());
bThrew = true;
}
Assert.IsTrue(bThrew);
}
}
