def test_merge_by_id(self):

        schema = {
            "mergeStrategy": "arrayMergeById",
            "items": {
                'type': 'object'
            }
        }

        expected = {
            "items": {
                'type': 'object'
            }
        }

        merger = jsonmerge.Merger(schema)
        schema2 = merger.get_schema()

        self.assertEqual(schema2, expected)