AjTalk.Tests.Model.ModelParserTests.ParseAddMessage C# (CSharp) Метод

        public void ParseAddMessage()
        {
            ModelParser parser = new ModelParser("10 + 20");
            IExpression expression = parser.ParseExpression();

            Assert.IsNotNull(expression);
            Assert.IsInstanceOfType(expression, typeof(MessageExpression));

            MessageExpression mexpression = (MessageExpression)expression;

            Assert.IsInstanceOfType(mexpression.Target, typeof(ConstantExpression));

            ConstantExpression cleftexpression = (ConstantExpression)mexpression.Target;
            Assert.AreEqual(10, cleftexpression.Value);

            Assert.AreEqual("+", mexpression.Selector);
            Assert.AreEqual(1, mexpression.Arguments.Count());
            Assert.IsInstanceOfType(mexpression.Arguments.First(), typeof(ConstantExpression));

            ConstantExpression crightexpression = (ConstantExpression)mexpression.Arguments.First();
            Assert.AreEqual(20, crightexpression.Value);

            Assert.AreEqual("10 + 20", expression.AsString());
        }