AjErl.Expressions.ReceiveExpression.Evaluate C# (CSharp) Method

        public object Evaluate(Context context, bool withvars = false)
        {
            object message = Process.Current.GetMessage();

            foreach (var match in this.matches)
            {
                var newcontext = match.MakeContext(message, context);

                if (newcontext != null)
                    return match.Evaluate(newcontext);
            }

            Process.Current.RejectMessage(message);

            return null;
        }

        public void ReceiveMessageWithNoMatch()
        {
            Process process = new Process();
            process.Tell(new Atom("foo"));
            Process.Current = process;

            MatchBody match = new MatchBody(new Atom("ping"), new ConstantExpression("pong"));
            ReceiveExpression expr = new ReceiveExpression(new MatchBody[] { match });

            Assert.IsFalse(expr.HasVariable());

            Assert.IsNull(expr.Evaluate(null));
        }