Cut test time by 65% by caching templates and not compiling sass

src/pretix/testutils/settings.py

@@ -18,9 +18,16 @@ atexit.register(tmpdir.cleanup)
 EMAIL_BACKEND = 'django.core.mail.outbox'
 
 COMPRESS_ENABLED = COMPRESS_OFFLINE = False
+COMPRESS_CACHE_BACKEND = 'testcache'
 STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.StaticFilesStorage'
 PRETIX_INSTANCE_NAME = 'pretix.eu'
 
+COMPRESS_PRECOMPILERS_ORIGINAL = COMPRESS_PRECOMPILERS
+COMPRESS_PRECOMPILERS = ()
+TEMPLATES[0]['OPTIONS']['loaders'] = (
+    ('django.template.loaders.cached.Loader', template_loaders),
+)
+
 DEBUG = True
 DEBUG_PROPAGATE_EXCEPTIONS = True
 

src/tests/presale/test_widget.py

@@ -4,7 +4,7 @@ from decimal import Decimal
 
 from bs4 import BeautifulSoup
 from django.conf import settings
-from django.test import TestCase
+from django.test import TestCase, override_settings
 from django.utils.timezone import now
 from freezegun import freeze_time
 
@@ -261,6 +261,7 @@ class WidgetCartTest(CartTestMixin, TestCase):
             "itemnum": 0,
         }
 
+    @override_settings(COMPRESS_PRECOMPILERS=settings.COMPRESS_PRECOMPILERS_ORIGINAL)
     def test_css_customized(self):
         response = self.client.get('/%s/%s/widget/v1.css' % (self.orga.slug, self.event.slug))
         c = b"".join(response.streaming_content).decode()