Merge branch 'fix-calendar-with-missing-dates'

Fix a bug in the calendar export code, that breaks for events without an
end time ("until_time").

.gitignore

@@ -13,6 +13,7 @@ stadt/settings/local.py
 *.swp
 *.pyc
 *.log
+.coverage
 
 # debian shizzle
 makefilet

features/events/views.py

@@ -138,8 +138,12 @@ class BaseCalendarFeed(ICalFeed):
         return item.content.first().time.astimezone(tz)
 
     def item_end_datetime(self, item):
-        tz = django.utils.timezone.get_default_timezone()
-        return item.content.first().until_time.astimezone(tz)
+        end_time = item.content.first().until_time
+        if end_time is None:
+            return None
+        else:
+            tz = django.utils.timezone.get_default_timezone()
+            return end_time.astimezone(tz)
 
 
 class GroupCalendarFeed(BaseCalendarFeed, features.groups.views.Mixin):

make.d/test.mk

@@ -43,3 +43,10 @@ test_py: virtualenv_check
 .PHONY: test_js
 test_js: $(DIR_NODE) lint_js
 	$(RUN_NODE) "$(BIN_NODE_PKG)" run test
+
+.PHONY: report-python-coverage
+coverage_py: virtualenv_check
+	STADTGESTALTEN_PRESET=test python -m coverage run -m manage test
+	python -m coverage report
+	python -m coverage html --directory="$(DIR_BUILD)/coverage-report"
+	@echo "Coverage Report Location: file://$(realpath $(DIR_BUILD))/coverage-report/index.html"