def test_add_existing_connection():
db_url = Config.get('app_schema').get('db_connection')
adapter = DatabaseAdapter()
adapter.add_connection(db_url)
expected_length = len(adapter.get_connections())
adapter.add_connection(db_url)
assert len(adapter.get_connections()) == expected_length
def test_add_connection_fail():
adapter = DatabaseAdapter()
with pytest.raises(ArgumentError):
adapter.add_connection('not_a_connection_string')
def test_add_connection():
db_url = Config.get('app_schema').get('db_connection')
adapter = DatabaseAdapter()
adapter.add_connection(db_url)
assert isinstance(adapter.get_session(db_url), Session)