Add logging for response bodies (#11)

stw_potsdam/canteen_api.py

@@ -1,6 +1,7 @@
 # -*- encoding: utf-8 -*-
 
 import json
+import logging
 from collections import namedtuple
 import requests
 
@@ -9,6 +10,8 @@ MenuParams = namedtuple('MenuParams', ('canteen_id', 'chash'))
 URL = 'https://www.studentenwerk-potsdam.de' + \
       '/essen/unsere-mensen-cafeterien/detailinfos/'
 
+LOG = logging.getLogger(__name__)
+
 
 def _param_json(to_serialize):
     """Obtain JSON string of an object without whitespace on delimiters.
@@ -40,4 +43,9 @@ def download_menu(menu_params):
     }
 
     request = requests.post(URL, params=params, json=body)
+
+    # urllib3 does not log response bodies - requests no longer supports it:
+    # https://2.python-requests.org//en/master/api/#api-changes
+    LOG.debug('Response:\n>>>>>\n%s\n<<<<<', request.text)
+
     return request.json()

tests/test_retrieval.py

@@ -1,5 +1,6 @@
 # -*- encoding: utf-8 -*-
 
+import logging
 import os
 import pytest
 
@@ -12,6 +13,10 @@ from stw_potsdam.canteen_api import MenuParams
 
 ENV_ENABLED = 'ENABLE_API_QUERY'
 
+# Because log messages are automatically part of the Pytest report, below
+# explicitly avoids adding log handlers via logging#basicConfig, for example.
+logging.getLogger().setLevel(logging.DEBUG)
+
 CANTEENS = read_canteen_config()