public void BatchReaderMixedEncodingTest()
        {
            EdmModel model = new EdmModel();
            EdmEntityType personType = model.EntityType("Person")
                .KeyProperty("Id", EdmCoreModel.Instance.GetInt32(false) as EdmTypeReference)
                .Property("Name", EdmPrimitiveTypeKind.String, isNullable: true);
            model.Fixup();

            EdmEntitySet personSet = model.EntitySet("Person", personType);

            EntityInstance personInstance = PayloadBuilder.Entity("TestModel.Person")
                .Property("Id", PayloadBuilder.PrimitiveValue(1))
                .Property("Name", PayloadBuilder.PrimitiveValue("Mr Foo Baz"));

            ODataUriSegment root = ODataUriBuilder.Root(new Uri("http://www.odata.org"));
            ODataUri testUri = new ODataUri(root, ODataUriBuilder.EntitySet(personSet));


            Encoding[] encodings = new Encoding[] 
            { 
                Encoding.UTF8, 
                Encoding.BigEndianUnicode, 
                Encoding.Unicode 
            };

            IEnumerable<BatchReaderMixedEncodingTestCase> testCases =
                encodings.SelectMany(batchEncoding =>
                    encodings.Select(changesetEncoding =>
                        new BatchReaderMixedEncodingTestCase
                        {
                            BatchEncoding = batchEncoding,
                            Changesets = new[]
                            {
                                new BatchReaderMixedEncodingChangeset
                                {
                                    ChangesetEncoding = changesetEncoding,
                                    Operations = new[]
                                    {
                                       new BatchReaderMixedEncodingOperation
                                       {
                                           OperationEncoding = Encoding.Unicode,
                                           PayloadFormat = ODataFormat.Atom,
                                       },
                                       new BatchReaderMixedEncodingOperation
                                       {
                                           // Uses changeset's encoding
                                           PayloadFormat = ODataFormat.Atom,
                                       },
                                    },
                                },
                                new BatchReaderMixedEncodingChangeset
                                {
                                    Operations = new[]
                                    {
                                        new BatchReaderMixedEncodingOperation
                                        {
                                            // Uses batch's encoding
                                            OperationEncoding = batchEncoding,
                                            PayloadFormat = ODataFormat.Atom,
                                        },
                                    },
                                },
                            },
                        }
                    ));

            this.CombinatorialEngineProvider.RunCombinations(
                testCases,
                this.ReaderTestConfigurationProvider.DefaultFormatConfigurations,
                (testCase, testConfiguration) =>
                {
                    var testPayload = personInstance.DeepCopy();
                    if (!testConfiguration.IsRequest)
                    {
                        testPayload.AddAnnotation(new PayloadFormatVersionAnnotation() { Response = true, ResponseWrapper = true });
                    }

                    var testDescriptor = this.CreateTestDescriptor(testCase, testPayload, testUri, testConfiguration.IsRequest);
                    testDescriptor.PayloadEdmModel = model;
                    testDescriptor.RunTest(testConfiguration);
                });
        }