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@qodot
Created November 10, 2016 01:30
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Pytest Fixtures (Flask, SQLAlchemy, Alembic)
import sys
import pytest
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from alembic.command import upgrade as alembic_upgrade
from alembic.config import Config as AlembicConfig
from wsgi import create_app
from config import config
def pytest_configure(config):
sys._called_from_test = True
def pytest_unconfigure(config):
del sys._called_from_test
@pytest.fixture(scope='session')
def flask_app(request):
app = create_app()
print('\n----- CREATE FLASK APPLICATION\n')
context = app.app_context()
context.push()
yield app
print('\n----- CREATE FLASK APPLICATION CONTEXT\n')
context.pop()
print('\n----- RELEASE FLASK APPLICATION CONTEXT\n')
@pytest.fixture(scope='session')
def flask_client(request, flask_app):
print('\n----- CREATE FLASK TEST CLIENT\n')
return flask_app.test_client()
@pytest.fixture(scope='session')
def db(request):
engine = create_engine(config['TEST_DB_URL'], echo=True)
session_factory = sessionmaker(bind=engine)
print('\n----- CREATE TEST DB CONNECTION POOL\n')
_db = {
'engine': engine,
'session_factory': session_factory,
}
alembic_config = AlembicConfig(config['ALEMBIC_INI'])
alembic_config.set_main_option('sqlalchemy.url', config['TEST_DB_URL'])
alembic_upgrade(alembic_config, 'head')
print('\n----- RUN ALEMBIC MIGRATION\n')
yield _db
print('\n----- CREATE TEST DB INSTANCE POOL\n')
engine.dispose()
print('\n----- RELEASE TEST DB CONNECTION POOL\n')
@pytest.fixture(scope='function')
def session(request, db):
session = db['session_factory']()
yield session
print('\n----- CREATE DB SESSION\n')
session.rollback()
session.close()
print('\n----- ROLLBACK DB SESSION\n')
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