Refactor czi_hosted and server into backend directory, pull common code into backend/common, refactor tests (#2102)

* move local_server -> backend/server server-> backend/czi_hosted, pull common code into backend/common update imports, tests and make commands

backend/test/test_czi_hosted/test_database/test_database.py

@@ -0,0 +1,63 @@
+import unittest
+from backend.czi_hosted.db.cellxgene_orm import CellxGeneUser, CellxGeneDataset, Annotation
+from backend.czi_hosted.db.db_utils import DbUtils
+from backend.test.fixtures.database import TestDatabase
+
+
+class DatabaseTest(unittest.TestCase):
+    db = DbUtils("postgresql://postgres:test_pw@localhost:5432")
+
+    @classmethod
+    def setUpClass(cls) -> None:
+        TestDatabase()
+
+    @classmethod
+    def tearDownClass(cls) -> None:
+        del cls.db
+
+    def test_user_creation(self):
+        one_user = self.db.get(table=CellxGeneUser, entity_id="test_user_id")
+        self.assertEqual(one_user.id, "test_user_id")
+        user_count = self.db.session.query(CellxGeneUser).count()
+        self.assertGreater(user_count, 10)
+
+    def test_dataset_creation(self):
+        one_dataset = self.db.query(
+            table_args=[CellxGeneDataset], filter_args=[CellxGeneDataset.name == "test_dataset"]
+        )
+        self.assertEqual(one_dataset[0].name, "test_dataset")
+        dataset_count = self.db.session.query(CellxGeneDataset).count()
+        self.assertGreater(dataset_count, 10)
+
+    def test_annotation_creation(self):
+        one_annotation = self.db.query(table_args=[Annotation], filter_args=[Annotation.tiledb_uri == "tiledb_uri"])[0]
+        self.assertEqual(one_annotation.tiledb_uri, "tiledb_uri")
+        annotation_count = self.db.session.query(Annotation).count()
+        self.assertGreater(annotation_count, 10)
+
+    def test_get_most_recent_annotation_for_user_dataset(self):
+        dataset_id = str(
+            self.db.query(table_args=[CellxGeneDataset], filter_args=[CellxGeneDataset.name == "test_dataset"])[0].id
+        )
+
+        # have to commit separately because created_at time written on the db server
+        self.db.session.add(Annotation(dataset_id=dataset_id, user_id="test_user_id", tiledb_uri="tiledb_uri_0"))
+        self.db.session.commit()
+
+        self.db.session.add(Annotation(dataset_id=dataset_id, user_id="test_user_id", tiledb_uri="tiledb_uri_1"))
+        self.db.session.commit()
+
+        self.db.session.add(Annotation(dataset_id=dataset_id, user_id="test_user_id", tiledb_uri="tiledb_uri_2"))
+        self.db.session.commit()
+
+        self.db.session.add(Annotation(dataset_id=dataset_id, user_id="test_user_id", tiledb_uri="tiledb_uri_3"))
+        self.db.session.commit()
+
+        self.db.session.add(Annotation(dataset_id=dataset_id, user_id="test_user_id", tiledb_uri="tiledb_uri_4"))
+        self.db.session.commit()
+
+        most_recent_annotation = self.db.query_for_most_recent(
+            Annotation, [Annotation.dataset_id == dataset_id, Annotation.user_id == "test_user_id"]
+        )
+
+        self.assertEqual(most_recent_annotation.tiledb_uri, "tiledb_uri_4")