signals.py 文件源码

def test_appcontext_signals(self):
        app = flask.Flask(__name__)
        recorded = []
        def record_push(sender, **kwargs):
            recorded.append('push')
        def record_pop(sender, **kwargs):
            recorded.append('push')

        @app.route('/')
        def index():
            return 'Hello'

        flask.appcontext_pushed.connect(record_push, app)
        flask.appcontext_popped.connect(record_pop, app)
        try:
            with app.test_client() as c:
                rv = c.get('/')
                self.assert_equal(rv.data, b'Hello')
                self.assert_equal(recorded, ['push'])
            self.assert_equal(recorded, ['push', 'pop'])
        finally:
            flask.appcontext_pushed.disconnect(record_push, app)
            flask.appcontext_popped.disconnect(record_pop, app)