public void IndexerSingleAttributeSingleExpressionTest()
        {
            // Arrange
            const string indexText = "Name eq '?'";
            var document = Document.Parse(@"{""Name"":""Bob""}");

            // Act
            var entries = new Indexer(indexText).Index(document);

            // Assert
            Assert.AreEqual(1, entries.Count());
            var entry = entries.First();
            Assert.AreEqual("Name=Bob", entry.EqualityPart[0]);
        }