测试路由蓝图 - Flask Restplus

我正试图在Flask-Restplus网站上测试ToDo的例子，但它一直让我得到404 ......

基本上我有3个文件：

app.py

import sys
import os
import platform
import datetime
import logging    
from logging import Formatter
from logging.handlers import RotatingFileHandler

from jinja2 import Environment, PackageLoader

from flask import Flask, url_for, render_template, abort, request, Blueprint
from flask.ext.restplus import Api, Resource, fields
from werkzeug.contrib.fixers import ProxyFix


api_v1 = Blueprint('api', __name__, url_prefix='/api/1')


ns = api.namespace('todos', description='TODO operations')

TODOS = {
    'todo1': {'task': 'build an API'},
    'todo2': {'task': '?????'},
    'todo3': {'task': 'profit!'},
}


todo = api.model('Todo', {
    'task': fields.String(required=True, description='The task details')
})

listed_todo = api.model('ListedTodo', {
    'id': fields.String(required=True, description='The todo ID'),
    'todo': fields.Nested(todo, description='The Todo')
})


def abort_if_todo_doesnt_exist(todo_id):
    if todo_id not in TODOS:
        api.abort(404, "Todo {} doesn't exist".format(todo_id))

parser = api.parser()
parser.add_argument('task', type=str, required=True, help='The task details', location='form')

@ns.route('/<string:todo_id>')
@api.doc(responses={404: 'Todo not found'}, params={'todo_id': 'The Todo ID'})
class Todo(Resource):
    '''Show a single todo item and lets you delete them'''
    @api.doc(description='todo_id should be in {0}'.format(', '.join(TODOS.keys())))
    @api.marshal_with(todo)
    def get(self, todo_id):
        '''Fetch a given resource'''
        abort_if_todo_doesnt_exist(todo_id)
        return TODOS[todo_id]

    @api.doc(responses={204: 'Todo deleted'})
    def delete(self, todo_id):
        '''Delete a given resource'''
        abort_if_todo_doesnt_exist(todo_id)
        del TODOS[todo_id]
        return '', 204

    @api.doc(parser=parser)
    @api.marshal_with(todo)
    def put(self, todo_id):
        '''Update a given resource'''
        args = parser.parse_args()
        task = {'task': args['task']}
        TODOS[todo_id] = task
        return task


@ns.route('/')
class TodoList(Resource):
    '''Shows a list of all todos, and lets you POST to add new tasks'''
    @api.marshal_list_with(listed_todo)
    def get(self):
        '''List all todos'''
        return [{'id': id, 'todo': todo} for id, todo in TODOS.items()]

    @api.doc(parser=parser)
    @api.marshal_with(todo, code=201)
    def post(self):
        '''Create a todo'''
        args = parser.parse_args()
        todo_id = 'todo%d' % (len(TODOS) + 1)
        TODOS[todo_id] = {'task': args['task']}
        return TODOS[todo_id], 201


app = Flask(__name__)

app.secret_key = "secretkey"
app.config.from_pyfile('settings.py')

if os.path.exists(os.path.join(app.root_path, 'local_settings.py')):
    app.config.from_pyfile('local_settings.py')


app.config['SQLALCHEMY_DATABASE_URI'] = 'postgres://%s@%s/%s' % (
    app.config['DB_USER'], app.config['DB_HOST'], app.config['DB_NAME'])

main.py

import sys

from flask import Blueprint

from portal.app import app
from portal import libs

if __name__ == '__main__':
    if len(sys.argv) == 2:
        port = int(sys.argv[1])
    else:
        port = 5000

    host = app.config.get('HOST', '127.0.0.1')

    from portal.app import api_v1
    app.register_blueprint(api_v1)

    import os
    app.root_path = os.getcwd()
    print "Running in", app.root_path, " with DEBUG=", app.config.get('DEBUG', False)
    app.run(host,
            port,
            app.config.get('DEBUG', False),
            use_reloader=True
    )

tests.py

class ApiTests(helpers.ViewBase):

    ############################
    #### setup and teardown ####
    ############################

    def setUp(self):
        super(ApiTests, self).setUp()
        app.config['TESTING'] = True
        app.config['WTF_CSRF_ENABLED'] = False
        app.config['DEBUG'] = False
        self.assertEquals(app.debug, False)

    # executed after to each test
    def tearDown(self):
        pass

    ###############
    #### tests ####
    ###############
    def test_can_obtain_todos(self):
        response = self.client.get('/api/1/todos')
        self.assertEqual(response.status_code, 200)

如果我运行应用程序，我可以毫无问题地访问http://localhost:5000/api/1/todos，但如果我运行测试，我会继续获得404路由异常

Traceback (most recent call last):
File "/home/internetmosquito/python_envs/portal/local/lib/python2.7/site-packages/flask/app.py", line 1639, in full_dispatch_request
rv = self.dispatch_request()
File "/home/internetmosquito/python_envs/portal/local/lib/python2.7/site-packages/flask/app.py", line 1617, in dispatch_request
self.raise_routing_exception(req)
File "/home/internetmosquito/python_envs/portal/local/lib/python2.7/site-packages/flask/app.py", line 1600, in raise_routing_exception
raise request.routing_exception
NotFound: 404: Not Found
> /home/internetmosquito/git/wizbots/portal/src/portal/test/test_api.py(47)test_can_obtain_todos()

知道我在这里缺少什么吗？谢谢！