TDD测试显示错误，即使响应是

Question

我遵循的是一个关于api here的教程，我遵循的是确切的代码，我还修改了Etsy应用程序的代码，这是我的第二个测试代码，教程代码与教程完全相同，可以正常工作。下面的代码已经过修改，可以与etsyapi一起使用。你知道吗

#etsywrapper/__core.py   
from . import session

class Listings(object):

    def __init__(self, id):
        self.id = id

    def info(self):
        path = 'https://openapi.etsy.com/v2/listings/{}/inventory'.format(self.id)
        response = session.get(path)
        return response.json()

    @staticmethod
    def active():
        path = 'https://openapi.etsy.com/v2/shops/:shop_id/listings/active'
        response = session.get(path)
        return response.json()

以及

#etsywrapper/__init__.py    
import os
import requests

ETSY_API_KEY = os.environ.get('ETSY_API_KEY', None)

class APIKeyMissingError(Exception):
    pass

if ETSY_API_KEY is None:
    raise APIKeyMissingError(
        "All methods require an API key. See "
        "https://developers.themoviedb.org/3/getting-started/introduction "
        "for how to retrieve an authentication token from "
        "The Movie Database"
    )
session = requests.Session()
session.params = {}
session.params['api_key'] = ETSY_API_KEY

from .__core import Listings

以及

#tests/test_etsywrapper.py    
from pytest import fixture
from etsywrapper import Listings
import vcr

@fixture
def listing_keys():
    # Responsible only for returning the test data
    return ['listing_id']

@vcr.use_cassette('tests/vcr_cassettes/listing-info.yml')
def test_listings_info(listing_keys):
    """test api call to get listings"""

    listings_instance = Listings(648597757)
    response = listings_instance.info()

    assert isinstance(response, dict)
    assert response['id'] == 648597757, "id should be in response"
    assert set(listing_keys).issubset(response.keys()), "All keys should be in the response"

@vcr.use_cassette('tests/vcr_cassettes/listings_active.yml')
def test_listings_active():
    """tests shop active listings"""

    response = Listings.active()

    assert isinstance(response, dict)
    assert isinstance(response['results'], list)
    assert isinstance(response['results'][0], dict)
    assert set(listing_keys()).issubset(response['results'][0].keys())

然后用“ETSY\u API\u KEY='my\u API\u code\u here'运行测试py.试验" 测试的结果显示我在第一次测试中有一个错误，但是当我查看vcr文件中的结果时，测试结果与我想要的URL完全一致，下面是terminal的错误详细信息

______________________________ test_listings_info _________________________listing_keys = ['listing_id'] @vcr.use_cassette('tests/vcr_cassettes/listing-info.yml') def test_listings_info(listing_keys): """test api call to get listings""" listings_instance = Listings(648597757) response = listings_instance.info() assert isinstance(response, dict) assert response['id'] == 648597757, "id should be in response" E KeyError: 'id' tests/test_etsywrapper.py:18: KeyError

这是我想要的网址

https://openapi.etsy.com/v2/listings/648597757/inventory?api_key="my_api_key"

正如您所看到的，测试中预期的“id”号在那里，但是测试看不到它。测试是正确的是至关重要的，有人能看到我代码中的错误吗？最后，我说我已经遵循了教程，虽然这里没有显示代码，但它与教程完全相同，并且所有测试都通过了。你知道吗

Answer 1

测试失败，因为响应JSON中没有id键，而URL中没有。您应该始终使用dict.get(key)从dict中检索值，因为如果key不在dict中，则使用dict[key]会抛出KeyError