fix test create_app invocation

tests/conftest.py

@@ -1,10 +1,9 @@
 from contextlib import contextmanager
 import os
 
+from flask import Flask
 from alembic.command import upgrade
 from alembic.config import Config
-from flask_migrate import Migrate, MigrateCommand
-from flask_script import Manager
 import boto3
 import pytest
 import sqlalchemy
@@ -14,7 +13,8 @@ from app import create_app, db
 
 @pytest.fixture(scope='session')
 def notify_api():
-    app = create_app()
+    app = Flask('test')
+    create_app(app)
 
     # deattach server-error error handlers - error_handler_spec looks like:
     #   {'blueprint_name': {
@@ -76,8 +76,6 @@ def notify_db(notify_api, worker_id):
     current_app.config['SQLALCHEMY_DATABASE_URI'] += '_{}'.format(worker_id)
     create_test_db(current_app.config['SQLALCHEMY_DATABASE_URI'])
 
-    Migrate(notify_api, db)
-    Manager(db, MigrateCommand)
     BASE_DIR = os.path.dirname(os.path.dirname(__file__))
     ALEMBIC_CONFIG = os.path.join(BASE_DIR, 'migrations')
     config = Config(ALEMBIC_CONFIG + '/alembic.ini')