flask web开发用selenium测试get请求引发BadStatusLine错误？

import re
import threading
import time
import unittest
from selenium import webdriver
from app import create_app, db
from app.models import Role, User, Post
from flask import url_for


class SeleniumTestCase(unittest.TestCase):
    client = None

    @classmethod
    def setUpClass(cls):
        try:
            cls.client = webdriver.Firefox()
        except:
            pass

        # skip these tests if the browser could not be started
        if cls.client:
            # create the application
            cls.app = create_app('testing')
            cls.app_context = cls.app.app_context()
            cls.app_context.push()

            # suppress logging to keep unittest output clean
            import logging
            logger = logging.getLogger('werkzeug')
            logger.setLevel("ERROR")

            # create the database and populate with some fake data
            db.create_all()
            Role.insert_roles()
            User.generate_fake()
            Post.generate_fake()

            # add an administrator user
            admin_role = Role.query.filter_by(name='Administrator').first()
            admin = User(email='john@example.com',
                         username='john', password='cat',
                         role=admin_role, confirm=True)
            db.session.add(admin)
            db.session.commit()

            # start the Flask server in a thread
            cls.server_thread = threading.Thread(target=cls.app.run,
                                                 kwargs={'debug': False})
            cls.server_thread.start()

            # give the server a second to ensure it is up
            time.sleep(1) 

    @classmethod
    def tearDownClass(cls):
        if cls.client:
            # stop the flask server and the browser
            cls.client.get('http://127.0.0.1:5000/shutdown') 
            cls.client.quit()
            cls.server_thread.join()

            # destroy database
            db.drop_all()
            db.session.remove()

            # remove application context
            cls.app_context.pop()

    def setUp(self):
        if not self.client:
            self.skipTest('Web browser not available')

    def tearDown(self):
        pass

    def test_admin_home_page(self):
        # navigate to home page
        self.client.get('http://localhost:5000/') #该句代码引发的错误
        self.assertTrue(re.search('Hello,\s+Stranger!',
                                  self.client.page_source))

        # navigate to login page
        self.client.find_element_by_link_text('Log In').click()
        self.assertIn('<h1>Login</h1>', self.client.page_source)

        # login
        self.client.find_element_by_name('email').\
            send_keys('john@example.com')
        self.client.find_element_by_name('password').send_keys('cat')
        self.client.find_element_by_name('submit').click()
        self.assertTrue(re.search('Hello,\s+john!', self.client.page_source))

        # navigate to the user's profile page
        self.client.find_element_by_link_text('Profile').click()
        self.assertIn('<h1>john</h1>', self.client.page_source)

求大神帮解答， 搜了好久也没搜到是什么问题

看了下，资源文件找不到导致？

https://blog.csdn.net/hyman_c/article/details/54632664