public void Can_use_overloaded_operators_on_derived_class()
{
var target = new Interpreter();
var x = new DerivedClassWithOverloadedBinaryOperators(3);
target.SetVariable("x", x);
string y = "5";
Assert.IsFalse(x == y);
Assert.IsFalse(target.Eval <bool>("x == y", new Parameter("y", y)));
y = "3";
Assert.IsTrue(x == y);
Assert.IsTrue(target.Eval <bool>("x == y", new Parameter("y", y)));
Assert.IsFalse(target.Eval <bool>("x == \"4\""));
Assert.IsTrue(target.Eval <bool>("x == \"3\""));
Assert.IsTrue(!x == "-3");
Assert.IsTrue(target.Eval <bool>("!x == \"-3\""));
var z = new DerivedClassWithOverloadedBinaryOperators(10);
Assert.IsTrue((x + z) == "13");
Assert.IsTrue(target.Eval <bool>("(x + z) == \"13\"", new Parameter("z", z)));
Assert.IsTrue((x * 4) == "12");
Assert.IsTrue(target.Eval <bool>("(x * 4) == \"12\""));
// ensure a user defined operator can be found if it's on the right side operand's type
Assert.IsTrue((4 * x) == "12");
Assert.IsTrue(target.Eval <bool>("(4 * x) == \"12\""));
}
public void Can_use_overloaded_operators_on_derived_class()
{
var target = new Interpreter();
var x = new DerivedClassWithOverloadedBinaryOperators(3);
target.SetVariable("x", x);
string y = "5";
Assert.IsFalse(x == y);
Assert.IsFalse(target.Eval <bool>("x == y", new Parameter("y", y)));
y = "3";
Assert.IsTrue(x == y);
Assert.IsTrue(target.Eval <bool>("x == y", new Parameter("y", y)));
Assert.IsFalse(target.Eval <bool>("x == \"4\""));
Assert.IsTrue(target.Eval <bool>("x == \"3\""));
Assert.IsTrue(!x == "-3");
Assert.IsTrue(target.Eval <bool>("!x == \"-3\""));
var z = new DerivedClassWithOverloadedBinaryOperators(10);
Assert.IsTrue((x + z) == "13");
Assert.IsTrue(target.Eval <bool>("(x + z) == \"13\"", new Parameter("z", z)));
}
public void Can_mix_overloaded_operators()
{
var target = new Interpreter();
var x = new ClassWithOverloadedBinaryOperators(3);
target.SetVariable("x", x);
// ensure we don't trigger an ambiguous operator exception
var z = new DerivedClassWithOverloadedBinaryOperators(10);
Assert.IsTrue((x + z) == "13");
Assert.IsTrue(target.Eval <bool>("(x + z) == \"13\"", new Parameter("z", z)));
}
