public void CreateMultipleRandomExpressions_ExpressionsAreDifferent()
        {
            // Arrange
            MockTestObjectCreator objectCreator = new MockTestObjectCreator(() => { return 5; });
            var builder = new RandomExpressionBuilder();
            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var exp1 = builder.NewExpression(ExpressionType.Constant);
            var exp2 = builder.NewExpression(ExpressionType.Constant);

            // Assert
            Assert.AreNotSame(exp1, exp2);
        }
        public void CreateValidDepth5Expression()
        {
            // Arrange
            var builder = new RandomExpressionBuilder();
            builder.CreationConditions = new ExpressionCreationConditions(maxDepth: 2);
            MockTestObjectCreator objectCreator = new MockTestObjectCreator(() => { return 2; });
            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var expression = builder.NewExpression(ExpressionType.ArrayIndex);

            //// Assert
            ////Assert.AreEqual(123, expression.Value);
        }
Пример #3
0
        public void BrainStorm1()
        {
            var factory = new RandomExpressionBuilder();
            IObjectCreator objectCreator = new MockTestObjectCreator(() => { return 2; });
            factory.CreationConditions = new ExpressionCreationConditions(maxDepth: 2);
            factory.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var expression = factory.NewExpression(ExpressionType.Add);

            ////RandomExpressionBuilder builder = new RandomExpressionBuilder();
            ////builder.CreationConditions = new ExpressionCreationConditions(maxDepth: 3);
            ////Expression e = builder.NewExpression();
            LambdaExpression func = Expression.Lambda<Action>(expression);

            DynamicProgram program = new DynamicProgram(func);
            string filename = Path.ChangeExtension(Path.GetRandomFileName(), "dll");
            program.Export(filename);
        }
        public void ExpressionTypeRegression_Add()
        {
            // Arrange
            var builder = new RandomExpressionBuilder();
            builder.CreationConditions = new ExpressionCreationConditions(maxDepth: 2);
            MockTestObjectCreator objectCreator = new MockTestObjectCreator((context) => {
                if (context.EvaluatedDataTypes.Count == 0) {
                    return 1;
                } else if (context.EvaluatedDataTypes[0] == typeof(int)) {
                    return 2;
                }

                throw new InvalidOperationException();
            });
            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var expression = builder.NewExpression(ExpressionType.Add);

            // Assert
            Assert.AreEqual(ExpressionType.Add, expression.NodeType);
            Assert.AreEqual(1, ((ConstantExpression)((BinaryExpression)expression).Left).Value);
            Assert.AreEqual(2, ((ConstantExpression)((BinaryExpression)expression).Right).Value);
        }
        public void NewExpression_MaxDepth1FromBuilder_ShouldReturnDepth1()
        {
            // Arrange
            var builder = new RandomExpressionBuilder();
            MockTestObjectCreator objectCreator = new MockTestObjectCreator(() => { return 123; });
            builder.ExpressionCreator.NewObjectCreator = objectCreator;
            builder.CreationConditions = new ExpressionCreationConditions(maxDepth: 1);
            var creationConditions = new ExpressionCreationConditions(maxDepth: 1000);

            // Act
            var expression = (ConstantExpression)builder.NewExpression(ExpressionType.Add, creationConditions);

            // Assert
            Assert.AreEqual(123, expression.Value);
        }
        public void MaxDepthLimitsCreation()
        {
            // Arrange
            var builder = new RandomExpressionBuilder();
            builder.CreationConditions = new ExpressionCreationConditions(maxDepth: 2);
            builder.NewExpressionTypeProvider = CreateSignelTypeMockTypeProvider(ExpressionType.Add);
            MockTestObjectCreator objectCreator = new MockTestObjectCreator(() => { return 12; });
            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var expression = builder.NewExpression();

            // Assert
            Assert.AreEqual(ExpressionType.Add, expression.NodeType);
            Assert.AreEqual(12, ((ConstantExpression)((BinaryExpression)expression).Left).Value);
            Assert.AreEqual(12, ((ConstantExpression)((BinaryExpression)expression).Right).Value);
        }
        private void TestRequestReturnOfDoubleType(RandomExpressionBuilder builder, ExpressionCreationConditions conditions)
        {
            // Arrange
            MockTestObjectCreator objectCreator = new MockTestObjectCreator((context) => {
                if (context.RequestedReturnType == typeof(double)) {
                    return 2.5;
                }

                throw new InvalidOperationException();
            });
            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var expression = builder.NewExpression(ExpressionType.Subtract, conditions);

            // Assert
            Assert.AreEqual(ExpressionType.Subtract, expression.NodeType);
            Assert.AreEqual(typeof(double), expression.Type);
            Assert.AreEqual(typeof(double), ((ConstantExpression)((BinaryExpression)expression).Left).Type);
            Assert.AreEqual(typeof(double), ((ConstantExpression)((BinaryExpression)expression).Right).Type);
        }
        public void NewExpression_Regresssion2()
        {
            // Arrange
            var builder = new RandomExpressionBuilder();
            builder.CreationConditions = new ExpressionCreationConditions(maxDepth: 3);
            MockTestObjectCreator objectCreator = new MockTestObjectCreator(() => { return DateTime.Now; });
            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            var expresssion = builder.NewExpression();

            // Assert
            Assert.IsNotNull(expresssion);
        }
        public void NewExpression_Regresssion1()
        {
            // Arrange
            MockTestObjectCreator objectCreator = new MockTestObjectCreator(() => { return 1; });
            var builder = new RandomExpressionBuilder(seed: 15465);
            builder.NewExpressionTypeProvider = CreateSignelTypeMockTypeProvider(ExpressionType.And);
            builder.ExpressionCreator.NewExpressionCallback = (notUsed1, notUsed2) => {
                return Expression.Constant(false);
            };

            builder.ExpressionCreator.NewObjectCreator = objectCreator;

            // Act
            Expression exp = builder.NewExpression();

            // Assert
            Assert.AreEqual(ExpressionType.And, exp.NodeType);
        }