@pytest.yield_fixture
def application():
    _app = create_app(configName='testing')
    _app_ctx = _app.app_context()
    _app_ctx.push()
    db.create_all()
    yield _app
    db.session.remove()
    db.drop_all()
    _app_ctx.pop()

@pytest.fixture
def application():
    _app = create_app(configName='testing')
    _app_ctx = _app.app_context()
    _app_ctx.push()
    db.create_all()
    def _finalize()
        db.session.remove()
        db.drop_all()
        _app_ctx.pop()
    request.addfinalizer(_finalize)
    return _app