public void GetFieldNames_FlatDocument_FieldCannotBeRenamedToExisting()
        {
            var dataItem = new RemappedFieldsDataItem(new DictionaryDataItem(new Dictionary <string, object>
            {
                { "source", "Hello World!" },
                { "persisted", 42 }
            }),
                                                      new Map <string, string> {
                { "source", "persisted" }
            });

            var fieldNames = dataItem.GetFieldNames();

            Assert.IsNotNull(fieldNames, TestResources.NullRemappedFieldNames);
            CollectionAssert.AreEquivalent(new[] { "persisted" }, fieldNames.ToArray(), TestResources.InvalidRemappedFieldNames);

            Assert.AreEqual("Hello World!", dataItem.GetValue("persisted"), TestResources.InvalidRemappedFieldValue);
        }
        public void GetFieldNames_FlatDocument_MultipleFieldsRenamed()
        {
            var dataItem = new RemappedFieldsDataItem(new DictionaryDataItem(new Dictionary <string, object>
            {
                { "source1", "Hello World!" },
                { "source2", 42 }
            }),
                                                      new Map <string, string>
            {
                { "source1", "target1" },
                { "source2", "target2" }
            });

            var fieldNames = dataItem.GetFieldNames();

            Assert.IsNotNull(fieldNames, TestResources.NullRemappedFieldNames);
            CollectionAssert.AreEquivalent(new[] { "target1", "target2" }, fieldNames.ToArray(), TestResources.InvalidRemappedFieldNames);

            Assert.AreEqual("Hello World!", dataItem.GetValue("target1"), TestResources.InvalidRemappedFieldValue);
            Assert.AreEqual(42, dataItem.GetValue("target2"), TestResources.InvalidRemappedFieldValue);
        }