basic.py 文件源码

def test_preserve_only_once(self):
        app = flask.Flask(__name__)
        app.debug = True

        @app.route('/fail')
        def fail_func():
            1 // 0

        c = app.test_client()
        for x in range(3):
            with self.assert_raises(ZeroDivisionError):
                c.get('/fail')

        self.assert_true(flask._request_ctx_stack.top is not None)
        self.assert_true(flask._app_ctx_stack.top is not None)
        # implicit appctx disappears too
        flask._request_ctx_stack.top.pop()
        self.assert_true(flask._request_ctx_stack.top is None)
        self.assert_true(flask._app_ctx_stack.top is None)