public void EvaluateUndefinedVariable()
{
Context context = new Context();
VariableExpression expr = new VariableExpression("Foo");
Assert.IsNull(expr.Evaluate(context));
}
public void EvaluateDefinedVariable()
{
Context context = new Context();
context.SetValue("One", 1);
VariableExpression expr = new VariableExpression("One");
Assert.AreEqual(1, expr.Evaluate(context));
}
public void EvaluateDefinedMethod()
{
Context context = new Context();
IList<ICommand> commandlist = new List<ICommand>();
commandlist.Add(new SetVariableCommand("a", new ConstantExpression(1)));
commandlist.Add(new SetVariableCommand("b", new ConstantExpression(2)));
commandlist.Add(new ExpressionCommand(new VariableExpression("b")));
CompositeCommand commands = new CompositeCommand(commandlist);
DefinedMethod method = new DefinedMethod(null, commands);
context.SetValue("foo", method);
VariableExpression expr = new VariableExpression("foo");
Assert.AreEqual(2, expr.Evaluate(context));
}
