private static void AssertODataComplexValueAreEqual(ODataComplexValue expectedComplexValue, ODataComplexValue actualComplexValue)
 {
     Assert.IsNotNull(expectedComplexValue);
     Assert.IsNotNull(actualComplexValue);
     Assert.AreEqual(expectedComplexValue.TypeName, actualComplexValue.TypeName);
     AssertODataPropertiesAreEqual(expectedComplexValue.Properties, actualComplexValue.Properties);
 }

        public ODataJsonLightInheritComplexCollectionWriterTests()
        {
            collectionStartWithoutSerializationInfo = new ODataCollectionStart();

            collectionStartWithSerializationInfo = new ODataCollectionStart();
            collectionStartWithSerializationInfo.SetSerializationInfo(new ODataCollectionStartSerializationInfo { CollectionTypeName = "Collection(ns.Address)" });

            address = new ODataComplexValue { Properties = new[]
            {
                new ODataProperty { Name = "Street", Value = "1 Microsoft Way" }, 
                new ODataProperty { Name = "Zipcode", Value = 98052 }, 
                new ODataProperty { Name = "State", Value = new ODataEnumValue("WA", "ns.StateEnum") }, 
                new ODataProperty { Name = "City", Value = "Shanghai" }
            }, TypeName = "TestNamespace.DerivedAddress" };
            items = new[] { address };

            EdmComplexType addressType = new EdmComplexType("ns", "Address");
            addressType.AddProperty(new EdmStructuralProperty(addressType, "Street", EdmCoreModel.Instance.GetString(isNullable: true)));
            addressType.AddProperty(new EdmStructuralProperty(addressType, "Zipcode", EdmCoreModel.Instance.GetInt32(isNullable: true)));
            var stateEnumType = new EdmEnumType("ns", "StateEnum", isFlags: true);
            stateEnumType.AddMember("IL", new EdmIntegerConstant(1));
            stateEnumType.AddMember("WA", new EdmIntegerConstant(2));
            addressType.AddProperty(new EdmStructuralProperty(addressType, "State", new EdmEnumTypeReference(stateEnumType, true)));
            
            EdmComplexType derivedAddressType = new EdmComplexType("ns", "DerivedAddress", addressType, false);
            derivedAddressType.AddProperty(new EdmStructuralProperty(derivedAddressType, "City", EdmCoreModel.Instance.GetString(isNullable: true)));

            addressTypeReference = new EdmComplexTypeReference(addressType, isNullable: false);
            derivedAddressTypeReference = new EdmComplexTypeReference(derivedAddressType, isNullable: false);
        }

        public void MultipleTypeCustomInstanceAnnotationsOnErrorShouldRoundtrip()
        {
            var originalInt = new KeyValuePair<string, ODataValue>("int.error", new ODataPrimitiveValue(1));
            var originalDouble = new KeyValuePair<string, ODataValue>("double.error", new ODataPrimitiveValue(double.NaN));
            DateTimeOffset dateTimeOffset = new DateTimeOffset(2012, 10, 10, 12, 12, 59, new TimeSpan());
            var originalDateTimeOffset = new KeyValuePair<string, ODataValue>("DateTimeOffset.error", new ODataPrimitiveValue(dateTimeOffset));
            Date date = new Date(2014, 12, 12);
            var originalDate = new KeyValuePair<string, ODataValue>("Date.error", new ODataPrimitiveValue(date));
            TimeOfDay time = new TimeOfDay(10, 12, 3, 9);
            var originaltime = new KeyValuePair<string, ODataValue>("TimeOfDay.error", new ODataPrimitiveValue(time));
            TimeSpan timeSpan = new TimeSpan(12345);
            var originalTimeSpan = new KeyValuePair<string, ODataValue>("TimeSpan.error", new ODataPrimitiveValue(timeSpan));
            GeographyPoint geographyPoint = GeographyPoint.Create(32.0, -100.0);
            var originalGeography = new KeyValuePair<string, ODataValue>("Geography.error", new ODataPrimitiveValue(geographyPoint));
            var originalNull = new KeyValuePair<string, ODataValue>("null.error", new ODataNullValue());

            var complexValue = new ODataComplexValue
            {
                TypeName = "ns.ErrorDetails",
                Properties = new[] { new ODataProperty { Name = "ErrorDetailName", Value = "inner property value" } }
            };
            var originalComplex = new KeyValuePair<string, ODataValue>("sample.error", complexValue);

            var error = this.WriteThenReadErrorWithInstanceAnnotation(originalInt, originalDouble, originalDate, originalDateTimeOffset, originaltime, originalTimeSpan, originalGeography, originalNull, originalComplex);

            var annotation = RunBasicVerificationAndGetAnnotationValue("int.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(1);

            annotation = RunBasicVerificationAndGetAnnotationValue("double.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(double.NaN);

            annotation = RunBasicVerificationAndGetAnnotationValue("Date.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(date);

            annotation = RunBasicVerificationAndGetAnnotationValue("DateTimeOffset.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(dateTimeOffset);

            annotation = RunBasicVerificationAndGetAnnotationValue("TimeOfDay.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(time);

            annotation = RunBasicVerificationAndGetAnnotationValue("TimeSpan.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(timeSpan);

            annotation = RunBasicVerificationAndGetAnnotationValue("Geography.error", error);
            annotation.Should().BeOfType<ODataPrimitiveValue>();
            annotation.As<ODataPrimitiveValue>().Value.Should().Be(geographyPoint);

            annotation = RunBasicVerificationAndGetAnnotationValue("null.error", error);
            annotation.Should().BeOfType<ODataNullValue>();

            annotation = RunBasicVerificationAndGetAnnotationValue("sample.error", error);
            annotation.Should().BeOfType<ODataComplexValue>();
            annotation.As<ODataComplexValue>().Properties.First().Value.Should().Be("inner property value");
        }

        /// <summary>
        /// Deserializes the given <paramref name="complexValue"/> under the given <paramref name="readContext"/>.
        /// </summary>
        /// <param name="complexValue">The complex value to deserialize.</param>
        /// <param name="complexType">The EDM type of the complex value to read.</param>
        /// <param name="readContext">The deserializer context.</param>
        /// <returns>The deserialized complex value.</returns>
        public virtual object ReadComplexValue(ODataComplexValue complexValue, IEdmComplexTypeReference complexType,
            ODataDeserializerContext readContext)
        {
            if (complexValue == null)
            {
                throw Error.ArgumentNull("complexValue");
            }

            if (readContext == null)
            {
                throw Error.ArgumentNull("readContext");
            }

            if (readContext.Model == null)
            {
                throw Error.Argument("readContext", SRResources.ModelMissingFromReadContext);
            }

            object complexResource = CreateResource(complexType, readContext);
            foreach (ODataProperty complexProperty in complexValue.Properties)
            {
                DeserializationHelpers.ApplyProperty(complexProperty, complexType, complexResource, DeserializerProvider, readContext);
            }
            return complexResource;
        }

 public void DefaultValuesAndPropertiesGetterAndSetterTest()
 {
     ODataComplexValue odataComplexValue = new ODataComplexValue();
     this.Assert.IsNull(odataComplexValue.Properties, "Expected null default value for property 'Properties'.");
     List<ODataProperty> properties = new List<ODataProperty>();
     odataComplexValue.Properties = properties;
     this.Assert.AreSame(odataComplexValue.Properties, properties, "Expected reference equal values for property 'Properties'.");
 }

 public void PropertySettersNullTest()
 {
     ODataComplexValue odataComplexValue = new ODataComplexValue()
         {
             Properties = new List<ODataProperty>()
         };
     odataComplexValue.Properties = null;
     this.Assert.IsNull(odataComplexValue.Properties, "Expected null value for property 'Properties'.");
 }

 public void ComplexWithPrimitiveValueShouldMaterialize()
 {
     ODataComplexValue pointComplexValue = new ODataComplexValue() {Properties = new ODataProperty[] {new ODataProperty() {Name = "X", Value = 15}, new ODataProperty() {Name = "Y", Value = 18}}};
     this.CreatePrimitiveValueMaterializationPolicy().MaterializeComplexTypeProperty(typeof(CollectionValueMaterializationPolicyTests.Point), pointComplexValue);
     pointComplexValue.HasMaterializedValue().Should().BeTrue();
     var point = pointComplexValue.GetMaterializedValue().As<CollectionValueMaterializationPolicyTests.Point>();
     point.X.Should().Be(15);
     point.Y.Should().Be(18);
 }

        public void ComplexTypeRoundtripAtomTest()
        {
            var age = new ODataProperty() { Name = "Age", Value = (Int16)18 };
            var email = new ODataProperty() { Name = "Email", Value = "[email protected]" };
            var tel = new ODataProperty() { Name = "Tel", Value = "0123456789" };
            var id = new ODataProperty() { Name = "ID", Value = Guid.Empty };

            ODataComplexValue complexValue = new ODataComplexValue() { TypeName = "NS.PersonalInfo", Properties = new[] { age, email, tel, id } };

            this.VerifyComplexTypeRoundtrip(complexValue, "NS.PersonalInfo");
        }

        public void ComplexTypeCollectionRoundtripAtomTest()
        {
            ODataComplexValue subject0 = new ODataComplexValue() { TypeName = "NS.Subject", Properties = new[] { new ODataProperty() { Name = "Name", Value = "English" }, new ODataProperty() { Name = "Score", Value = (Int16)98 } } };
            ODataComplexValue subject1 = new ODataComplexValue() { TypeName = "NS.Subject", Properties = new[] { new ODataProperty() { Name = "Name", Value = "Math" }, new ODataProperty() { Name = "Score", Value = (Int16)90 } } };
            ODataCollectionValue complexCollectionValue = new ODataCollectionValue { TypeName = "Collection(NS.Subject)", Items = new[] { subject0, subject1 } };
            ODataFeedAndEntrySerializationInfo info = new ODataFeedAndEntrySerializationInfo() {
                NavigationSourceEntityTypeName = subject0.TypeName,
                NavigationSourceName = "Subjects",
                ExpectedTypeName = subject0.TypeName
            };

            this.VerifyTypeCollectionRoundtrip(complexCollectionValue, "Subjects", info);
        }

        private void TestBaseLine(ODataComplexValue val, string resVcf, string resJson)
        {
            // Write json, compare with baseline
            Assert.AreEqual(
                TestHelper.GetResourceString(resJson),
                TestHelper.GetToplevelPropertyPayloadString(val),
                "Json baseline");

            // Write vcf, compare with baseline
            Assert.AreEqual(
                TestHelper.GetResourceString(resVcf),
                TestHelper.GetToplevelPropertyPayloadString(val, "text/x-vCard", VCardMediaTypeResolver.Instance),
                "Vcf baseline");
        }

        public void PropertyGettersAndSettersTest()
        {
            string name1 = "ODataPrimitiveProperty";
            object value1 = "Hello world";

            ODataProperty primitiveProperty = new ODataProperty()
            {
                Name = name1,
                Value = value1,
            };

            this.Assert.AreEqual(name1, primitiveProperty.Name, "Expected equal name values.");
            this.Assert.AreSame(value1, primitiveProperty.Value, "Expected reference equal values for property 'Value'.");

            string name2 = "ODataComplexProperty";
            ODataComplexValue value2 = new ODataComplexValue()
            {
                Properties = new[]
                {
                    new ODataProperty() { Name = "One", Value = 1 },
                    new ODataProperty() { Name = "Two", Value = 2 },
                }
            };

            ODataProperty complexProperty = new ODataProperty()
            {
                Name = name2,
                Value = value2,
            };

            this.Assert.AreEqual(name2, complexProperty.Name, "Expected equal name values.");
            this.Assert.AreSame(value2, complexProperty.Value, "Expected reference equal values for property 'Value'.");

            string name3 = "ODataCollectionProperty";
            ODataCollectionValue value3 = new ODataCollectionValue()
            {
                Items = new[] { 1, 2, 3 }
            };

            ODataProperty multiValueProperty = new ODataProperty()
            {
                Name = name3,
                Value = value3,
            };

            this.Assert.AreEqual(name3, multiValueProperty.Name, "Expected equal name values.");
            this.Assert.AreSame(value3, multiValueProperty.Value, "Expected reference equal values for property 'Value'.");
        }

        internal static IEdmValue CreateStructuredEdmValue(ODataComplexValue complexValue, IEdmComplexTypeReference complexType)
        {
            if (complexType != null)
            {
                object typeAnnotation = ReflectionUtils.CreateInstance(
                    odataTypeAnnotationType,
                    new Type[] { typeof(IEdmComplexTypeReference) },
                    complexType);
                complexValue.SetAnnotation(typeAnnotation);
            }

            return (IEdmValue)ReflectionUtils.CreateInstance(
                odataEdmStructuredValueType,
                new Type[] { typeof(ODataComplexValue) },
                complexValue);
        }

        public void ReadInline_Calls_ReadComplexValue()
        {
            // Arrange
            ODataDeserializerProvider deserializerProvider = new DefaultODataDeserializerProvider();
            Mock<ODataComplexTypeDeserializer> deserializer = new Mock<ODataComplexTypeDeserializer>(deserializerProvider);
            ODataComplexValue item = new ODataComplexValue();
            ODataDeserializerContext readContext = new ODataDeserializerContext();

            deserializer.CallBase = true;
            deserializer.Setup(d => d.ReadComplexValue(item, _addressEdmType, readContext)).Returns(42).Verifiable();

            // Act
            object result = deserializer.Object.ReadInline(item, _addressEdmType, readContext);

            // Assert
            deserializer.Verify();
            Assert.Equal(42, result);
        }

        public void WriteEntryAndComplex()
        {
            Action<ODataJsonLightOutputContext> test = outputContext =>
            {
                var entry = new ODataEntry();

                var complex = new ODataComplexValue() {Properties = new List<ODataProperty>() {new ODataProperty() {Name = "Name", Value = "ComplexName"}}};
                entry.Properties = new List<ODataProperty>() {new ODataProperty() {Name = "ID", Value = 1}, new ODataProperty() {Name = "complexProperty", Value = complex}};
                var parameterWriter = new ODataJsonLightParameterWriter(outputContext, operation: null);
                parameterWriter.WriteStart();
                var entryWriter = parameterWriter.CreateEntryWriter("entry");
                entryWriter.WriteStart(entry);
                entryWriter.WriteEnd();
                parameterWriter.WriteValue("complex", complex);
                parameterWriter.WriteEnd();
                parameterWriter.Flush();
            };

            WriteAndValidate(test, "{\"entry\":{\"ID\":1,\"complexProperty\":{\"Name\":\"ComplexName\"}},\"complex\":{\"Name\":\"ComplexName\"}}", writingResponse: false);
        }

        static ODataAvroWriterTests()
        {
            var type = new EdmEntityType("NS", "SimpleEntry");
            type.AddStructuralProperty("TBoolean", EdmPrimitiveTypeKind.Boolean, true);
            type.AddStructuralProperty("TInt32", EdmPrimitiveTypeKind.Int32, true);
            type.AddStructuralProperty("TCollection", new EdmCollectionTypeReference(new EdmCollectionType(EdmCoreModel.Instance.GetInt64(false))));
            var cpx = new EdmComplexType("NS", "SimpleComplex");
            cpx.AddStructuralProperty("TBinary", EdmPrimitiveTypeKind.Binary, true);
            cpx.AddStructuralProperty("TString", EdmPrimitiveTypeKind.String, true);
            type.AddStructuralProperty("TComplex", new EdmComplexTypeReference(cpx, true));
            TestEntityType = type;

            binary0 = new byte[] { 4, 7 };
            complexValue0 = new ODataComplexValue()
            {
                Properties = new[]
                {
                    new ODataProperty {Name = "TBinary", Value = binary0 ,},
                    new ODataProperty {Name = "TString", Value = "iamstr",},
                },
                TypeName = "NS.SimpleComplex"
            };

            longCollection0 = new[] {7L, 9L};
            var collectionValue0 = new ODataCollectionValue { Items = longCollection0 };

            entry0 = new ODataEntry
            {
                Properties = new[]
                {
                    new ODataProperty {Name = "TBoolean", Value = true,},
                    new ODataProperty {Name = "TInt32", Value = 32,},
                    new ODataProperty {Name = "TComplex", Value = complexValue0,},
                    new ODataProperty {Name = "TCollection", Value = collectionValue0 },
                },
                TypeName = "NS.SimpleEntry"
            };
        }

        /// <summary>Materializes a complex type property.</summary>
        /// <param name="propertyType">Type of the complex type to set.</param>
        /// <param name="complexValue">The OData complex value.</param>
        internal void MaterializeComplexTypeProperty(Type propertyType, ODataComplexValue complexValue)
        {
            //// TODO: we decide whether the type is primitive or complex only based on the payload. If there is a mismatch we throw a random exception. 
            //// We should have a similar check to the one we have for non-projection codepath here. 
            if (complexValue == null || complexValue.HasMaterializedValue())
            {
                return;
            }

            ClientTypeAnnotation complexType = null;

            // TODO: We should call type resolver for complex types for projections if they are not instantiated by the user directly 
            // with "new" operator. At the moment we don't do it at all. Let's be consistent for Collections and call type 
            // resolver as we do in DirectMaterializationPlan (even though this is only for negative cases for Collections as property.IsCollection
            // must have been false otherwise we would have not end up here). 
            // This bug is about investigating when we actually do call type resolver and fix it so that we call it when needed and don't
            // call it when we should not (i.e. it should not be called for types created with "new" operator").
            if (!string.IsNullOrEmpty(complexValue.TypeName))
            {
                complexType = this.MaterializerContext.ResolveTypeForMaterialization(propertyType, complexValue.TypeName);
            }
            else
            {
                ClientEdmModel edmModel = this.MaterializerContext.Model;
                complexType = edmModel.GetClientTypeAnnotation(edmModel.GetOrCreateEdmType(propertyType));
            }

            object complexInstance = this.CreateNewInstance(complexType.EdmType.ToEdmTypeReference(true), complexType.ElementType);
            this.MaterializeDataValues(complexType, complexValue.Properties, this.MaterializerContext.IgnoreMissingProperties);
            this.ApplyDataValues(complexType, complexValue.Properties, complexInstance);
            complexValue.SetMaterializedValue(complexInstance);

            if (!this.MaterializerContext.Context.DisableInstanceAnnotationMaterialization)
            {
                this.InstanceAnnotationMaterializationPolicy.SetInstanceAnnotations(complexValue, complexInstance);
            }
        }

        public void ReadComplexValue_CanReadDerivedComplexValue()
        {
            // Arrange
            ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
            builder.ComplexType<Address>();
            IEdmModel model = builder.GetEdmModel();
            IEdmComplexTypeReference addressEdmType = model.GetEdmTypeReference(typeof(Address)).AsComplex();

            DefaultODataDeserializerProvider deserializerProvider = new DefaultODataDeserializerProvider();
            ODataComplexTypeDeserializer deserializer = new ODataComplexTypeDeserializer(deserializerProvider);

            ODataComplexValue complexValue = new ODataComplexValue
            {
                Properties = new[]
                { 
                    new ODataProperty { Name = "Street", Value = "12"},
                    new ODataProperty { Name = "City", Value = "Redmond"},
                    new ODataProperty { Name = "UsProp", Value = "UsPropertyValue"}
                },
                TypeName = typeof(UsAddress).FullName
            };
            ODataDeserializerContext readContext = new ODataDeserializerContext { Model = model };

            // Act
            object address = deserializer.ReadComplexValue(complexValue, addressEdmType, readContext);

            // Assert
            Assert.NotNull(address);
            UsAddress usAddress = Assert.IsType<UsAddress>(address);

            Assert.Equal(usAddress.Street, "12");
            Assert.Equal(usAddress.City, "Redmond");
            Assert.Null(usAddress.Country);
            Assert.Null(usAddress.State);
            Assert.Null(usAddress.ZipCode);
            Assert.Equal("UsPropertyValue", usAddress.UsProp);
        }

        /// <summary>
        /// Deserializes the given <paramref name="complexValue"/> under the given <paramref name="readContext"/>.
        /// </summary>
        /// <param name="complexValue">The complex value to deserialize.</param>
        /// <param name="complexType">The EDM type of the complex value to read.</param>
        /// <param name="readContext">The deserializer context.</param>
        /// <returns>The deserialized complex value.</returns>
        public virtual object ReadComplexValue(ODataComplexValue complexValue, IEdmComplexTypeReference complexType,
            ODataDeserializerContext readContext)
        {
            if (complexValue == null)
            {
                throw Error.ArgumentNull("complexValue");
            }

            if (readContext == null)
            {
                throw Error.ArgumentNull("readContext");
            }

            if (readContext.Model == null)
            {
                throw Error.Argument("readContext", SRResources.ModelMissingFromReadContext);
            }

            if (!String.IsNullOrEmpty(complexValue.TypeName) && complexType.FullName() != complexValue.TypeName)
            {
                // received a derived complex type in a base type deserializer.
                IEdmModel model = readContext.Model;
                if (model == null)
                {
                    throw Error.Argument("readContext", SRResources.ModelMissingFromReadContext);
                }

                IEdmComplexType actualType = model.FindType(complexValue.TypeName) as IEdmComplexType;
                if (actualType == null)
                {
                    throw new ODataException(Error.Format(SRResources.ComplexTypeNotInModel, complexValue.TypeName));
                }

                if (actualType.IsAbstract)
                {
                    string message = Error.Format(SRResources.CannotInstantiateAbstractComplexType,
                        complexValue.TypeName);
                    throw new ODataException(message);
                }

                IEdmTypeReference actualComplexType = new EdmComplexTypeReference(actualType, isNullable: false);
                ODataEdmTypeDeserializer deserializer = DeserializerProvider.GetEdmTypeDeserializer(actualComplexType);
                if (deserializer == null)
                {
                    throw new SerializationException(
                        Error.Format(SRResources.TypeCannotBeDeserialized, actualComplexType.FullName(),
                            typeof(ODataMediaTypeFormatter).Name));
                }

                object resource = deserializer.ReadInline(complexValue, actualComplexType, readContext);

                EdmStructuredObject structuredObject = resource as EdmStructuredObject;
                if (structuredObject != null)
                {
                    structuredObject.ExpectedEdmType = complexType.ComplexDefinition();
                }

                return resource;
            }
            else
            {
                object complexResource = CreateResource(complexType, readContext);

                foreach (ODataProperty complexProperty in complexValue.Properties)
                {
                    DeserializationHelpers.ApplyProperty(complexProperty, complexType, complexResource,
                        DeserializerProvider, readContext);
                }
                return complexResource;
            }
        }

        public void WriteObject_Calls_CreateODataComplexValue()
        {
            // Arrange
            MemoryStream stream = new MemoryStream();
            IODataResponseMessage message = new ODataMessageWrapper(stream);
            ODataMessageWriterSettings settings = new ODataMessageWriterSettings();
            settings.SetServiceDocumentUri(new Uri("http://any/"));
            settings.SetContentType(ODataFormat.Atom);
            ODataMessageWriter messageWriter = new ODataMessageWriter(message, settings);
            Mock<ODataComplexTypeSerializer> serializer = new Mock<ODataComplexTypeSerializer>(new DefaultODataSerializerProvider());
            ODataSerializerContext writeContext = new ODataSerializerContext { RootElementName = "ComplexPropertyName", Model = _model };
            object graph = new object();
            ODataComplexValue complexValue = new ODataComplexValue
            {
                TypeName = "NS.Name",
                Properties = new[] { new ODataProperty { Name = "Property1", Value = 42 } }
            };

            serializer.CallBase = true;
            serializer.Setup(s => s.CreateODataComplexValue(graph, It.Is<IEdmComplexTypeReference>(e => e.Definition == _addressType), writeContext))
                .Returns(complexValue).Verifiable();

            // Act
            serializer.Object.WriteObject(graph, typeof(Address), messageWriter, writeContext);

            // Assert
            serializer.Verify();
            stream.Seek(0, SeekOrigin.Begin);
            XElement element = XElement.Load(stream);
            Assert.Equal("value", element.Name.LocalName);
            Assert.Equal("#NS.Name", element.Attributes().Single(a => a.Name.LocalName == "type").Value);
            Assert.Equal(1, element.Descendants().Count());
            Assert.Equal("42", element.Descendants().Single().Value);
            Assert.Equal("Property1", element.Descendants().Single().Name.LocalName);
        }

        /// <summary>
        /// Creates an <see cref="ODataComplexValue"/> for the object represented by <paramref name="graph"/>.
        /// </summary>
        /// <param name="graph">The value of the <see cref="ODataComplexValue"/> to be created.</param>
        /// <param name="complexType">The EDM complex type of the object.</param>
        /// <param name="writeContext">The serializer context.</param>
        /// <returns>The created <see cref="ODataComplexValue"/>.</returns>
        public virtual ODataComplexValue CreateODataComplexValue(object graph, IEdmComplexTypeReference complexType,
            ODataSerializerContext writeContext)
        {
            if (writeContext == null)
            {
                throw Error.ArgumentNull("writeContext");
            }

            if (graph == null || graph is NullEdmComplexObject)
            {
                return null;
            }

            IEdmComplexObject complexObject = graph as IEdmComplexObject ?? new TypedEdmComplexObject(graph, complexType, writeContext.Model);

            List<ODataProperty> propertyCollection = new List<ODataProperty>();
            foreach (IEdmProperty property in complexType.ComplexDefinition().Properties())
            {
                IEdmTypeReference propertyType = property.Type;
                ODataEdmTypeSerializer propertySerializer = SerializerProvider.GetEdmTypeSerializer(propertyType);
                if (propertySerializer == null)
                {
                    throw Error.NotSupported(SRResources.TypeCannotBeSerialized, propertyType.FullName(), typeof(ODataOutputFormatter).Name);
                }

                object propertyValue;
                if (complexObject.TryGetPropertyValue(property.Name, out propertyValue))
                {
                    if (propertyType != null && propertyType.IsComplex())
                    {
                        IEdmTypeReference actualType = writeContext.GetEdmType(propertyValue, propertyValue.GetType());
                        if (actualType != null && propertyType != actualType)
                        {
                            propertyType = actualType;
                        }
                    }

                    propertyCollection.Add(
                        propertySerializer.CreateProperty(propertyValue, propertyType, property.Name, writeContext));
                }
            }

            // Try to add the dynamic properties if the complex type is open.
            if (complexType.ComplexDefinition().IsOpen)
            {
                List<ODataProperty> dynamicProperties =
                    AppendDynamicProperties(complexObject, complexType, writeContext, propertyCollection, new string[0]);

                if (dynamicProperties != null)
                {
                    propertyCollection.AddRange(dynamicProperties);
                }
            }

            string typeName = complexType.FullName();

            ODataComplexValue value = new ODataComplexValue()
            {
                Properties = propertyCollection,
                TypeName = typeName
            };

            AddTypeNameAnnotationAsNeeded(value, writeContext.MetadataLevel);
            return value;
        }