public void UnifyValue()
{
AbstractMachineState state = SetupMachine();
UnifyValueInstruction i = new UnifyValueInstruction();
object[] args = { "X0" };
state.S = new ConstantTerm("ali");
i.Process(args);
i.Execute(state);
AbstractTerm X0 = (AbstractTerm)state["X0"];
Assert.AreEqual("unify_value", i.Name());
Assert.AreEqual(1, i.NumberOfArguments());
Assert.AreEqual("ali", X0.Data());
}