schedule support: add local file adapter for tests

src/core/schedules/schedulejson.py

 from collections import OrderedDict
 import json
 import requests
+from requests_file import FileAdapter
 
 from api.views.schedule import filter_additional_data, schedulexml_time_to_timedelta
 
 from .base import BaseScheduleSupport
 # from ...api.schedule import Schedule
 
+s = requests.Session()
+s.mount('file://', FileAdapter())
+
 
 class ScheduleJSONSupport(BaseScheduleSupport):
     identifier = 'schedule-json'
@@ -15,7 +19,7 @@ class ScheduleJSONSupport(BaseScheduleSupport):
     configuration_fields = None
 
     def ready(self):
-        r = requests.head(self.remote_url)
+        r = s.head(self.remote_url)
         return r.ok
 
     def fetch(self):
@@ -74,7 +78,7 @@ class ScheduleJSON:
 
     @classmethod
     def from_url(cls, url):
-        r = requests.get(url)
+        r = s.get(url)
 
         if r.ok is False:
             raise Exception('Request failed, HTTP {0}.'.format(r.status_code))

src/core/schedules/schedulexml.py

-from django.utils.dateparse import parse_datetime
-import requests
 import collections
 import datetime
+from django.utils.dateparse import parse_datetime
+import requests
+from requests_file import FileAdapter
 from xml.etree.ElementTree import ElementTree
 
 from api.views.schedule import filter_additional_data, schedulexml_time_to_timedelta
 
 from .base import BaseScheduleSupport
-# from ...api.schedule import Schedule
+
+s = requests.Session()
+s.mount('file://', FileAdapter())
 
 
 class ScheduleXMLSupport(BaseScheduleSupport):
@@ -17,7 +20,7 @@ class ScheduleXMLSupport(BaseScheduleSupport):
     configuration_fields = None
 
     def ready(self):
-        r = requests.head(self.remote_url)
+        r = s.head(self.remote_url)
         return r.ok
 
     def fetch(self):
@@ -73,12 +76,11 @@ class ScheduleXML:
     tz = None
 
     def __init__(self, tree):
-        # self.tz = pytz.timezone()
         self._schedule = tree
 
     @classmethod
     def from_url(cls, url):
-        r = requests.get(url)
+        r = s.get(url)
 
         if r.ok is False:
             raise Exception('Request failed, HTTP {0}.'.format(r.status_code))

src/core/tests/schedules.py

@@ -110,7 +110,7 @@ class ScheduleTests(TestCase):
         src = ScheduleSource.objects.create(
             assembly=self.assembly,
             import_type=ScheduleXMLSupport.identifier,
-            import_url='file://import_data/schedule-2021.xml',
+            import_url='file:///import_data/schedule-2021.xml',
         )
         self.assertFalse(src.has_running_import)
 
@@ -155,7 +155,7 @@ class ScheduleTests(TestCase):
         src = ScheduleSource.objects.create(
             assembly=self.assembly,
             import_type=ScheduleJSONSupport.identifier,
-            import_url='file://import_data/schedule-2021.json',
+            import_url='file:///import_data/schedule-2021.json',
         )
         self.assertFalse(src.has_running_import)