first commit based on psycopg2 2.9 version

tests/testconfig.py

@@ -0,0 +1,42 @@
+# Configure the test suite from the env variables.
+
+import os
+
+dbname = os.environ.get('PSYCOPG2_TESTDB', 'psycopg2_test')
+dbhost = os.environ.get('PSYCOPG2_TESTDB_HOST', os.environ.get('PGHOST'))
+dbport = os.environ.get('PSYCOPG2_TESTDB_PORT', os.environ.get('PGPORT'))
+dbuser = os.environ.get('PSYCOPG2_TESTDB_USER', os.environ.get('PGUSER'))
+dbpass = os.environ.get('PSYCOPG2_TESTDB_PASSWORD', os.environ.get('PGPASSWORD'))
+
+# Check if we want to test psycopg's green path.
+green = os.environ.get('PSYCOPG2_TEST_GREEN', None)
+if green:
+    if green == '1':
+        from psycopg2.extras import wait_select as wait_callback
+    elif green == 'eventlet':
+        from eventlet.support.psycopg2_patcher import eventlet_wait_callback \
+            as wait_callback
+    else:
+        raise ValueError("please set 'PSYCOPG2_TEST_GREEN' to a valid value")
+
+    import psycopg2.extensions
+    psycopg2.extensions.set_wait_callback(wait_callback)
+
+# Construct a DSN to connect to the test database:
+dsn = f'dbname={dbname}'
+if dbhost is not None:
+    dsn += f' host={dbhost}'
+if dbport is not None:
+    dsn += f' port={dbport}'
+if dbuser is not None:
+    dsn += f' user={dbuser}'
+if dbpass is not None:
+    dsn += f' password={dbpass}'
+
+# Don't run replication tests if REPL_DSN is not set, default to normal DSN if
+# set to empty string.
+repl_dsn = os.environ.get('PSYCOPG2_TEST_REPL_DSN', None)
+if repl_dsn == '':
+    repl_dsn = dsn
+
+repl_slot = os.environ.get('PSYCOPG2_TEST_REPL_SLOT', 'psycopg2_test_slot')