Add PostgreSQL tests

Change-Id: If2f295e0b6d5ed69c994b4bf90772f25c47b4aeb

Author: adrien-berchet

.gitignore

@@ -80,6 +80,7 @@ nosetests.xml
 coverage.xml
 *.cover
 .hypothesis/
+reports
 
 # Translations
 *.mo

bluepyparallel/database.py

@@ -32,6 +32,9 @@ def __init__(self, url, *args, create=False, **kwargs):
         self.metadata = None
         self.table = None
 
+    def __del__(self):
+        self.connection.close()
+
     def get_url(self):
         return self.engine.url
 

tests/test_database.py

@@ -6,10 +6,33 @@
 from sqlalchemy import Table
 from sqlalchemy import create_engine
 from sqlalchemy import select
+from sqlalchemy.exc import OperationalError
 
 from bluepyparallel import database
 
-URLS = ["/tmpdir/test.db", "sqlite:////tmpdir/test.db"]
+URLS = [
+    "/tmpdir/test.db",
+    "sqlite:////tmpdir/test.db",
+]
+try:
+    # Set up the PostGIS database:
+    #   Create the ``test_bpp`` role::
+    #     $ sudo -u postgres psql -c "CREATE ROLE test_bpp PASSWORD 'test_bpp' SUPERUSER CREATEDB
+    #       CREATEROLE INHERIT LOGIN;"
+    #   Create the ``test_bpp`` database::
+    #     $ sudo -u postgres createdb -E UTF-8 test_bpp
+    #     $ sudo -u postgres psql -d test_bpp -c 'CREATE SCHEMA test_bpp;'
+    #     $ sudo -u postgres psql -c 'GRANT CREATE ON DATABASE test_bpp TO "test_bpp";'
+    #     $ sudo -u postgres psql -d test_bpp -c 'GRANT USAGE,CREATE ON SCHEMA test_bpp TO
+    #       "test_bpp";'
+    PG_URL = "postgresql://test_bpp:test_bpp@localhost/test_bpp"
+    create_engine(PG_URL).connect()
+    URLS.append(PG_URL)
+except OperationalError:
+    pass
+except ModuleNotFoundError as e:
+    if "psycopg2" not in str(e):
+        raise
 
 
 @pytest.fixture(params=URLS)