Move COURSE_START_DATE_CHANGED signal

openedx/core/djangoapps/content/course_overviews/signals.py

@@ -3,15 +3,19 @@ Signal handler for invalidating cached course overviews
 """
 import logging
 
+from django.dispatch import Signal
 from django.dispatch.dispatcher import receiver
 
 from .models import CourseOverview
-from openedx.core.djangoapps.signals.signals import COURSE_PACING_CHANGED, COURSE_START_DATE_CHANGED
+from openedx.core.djangoapps.signals.signals import COURSE_PACING_CHANGED
 from xmodule.modulestore.django import SignalHandler
 
 LOG = logging.getLogger(__name__)
 
 
+COURSE_START_DATE_CHANGED = Signal(providing_args=["updated_course_overview", "previous_start_date"])
+
+
 @receiver(SignalHandler.course_published)
 def _listen_for_course_publish(sender, course_key, **kwargs):  # pylint: disable=unused-argument
     """

openedx/core/djangoapps/content/course_overviews/tests/test_signals.py

@@ -82,7 +82,7 @@ class CourseOverviewSignalsTestCase(ModuleStoreTestCase):
         self.store.update_item(course, ModuleStoreEnum.UserID.test)
         self.assertTrue(mock_signal.called)
 
-    @patch('openedx.core.djangoapps.signals.signals.COURSE_START_DATE_CHANGED.send')
+    @patch('openedx.core.djangoapps.content.course_overviews.signals.COURSE_START_DATE_CHANGED.send')
     def test_start_changed(self, mock_signal):
         self.assert_changed_signal_sent('start', self.TODAY, self.NEXT_WEEK, mock_signal)
 

openedx/core/djangoapps/signals/signals.py

@@ -24,5 +24,3 @@ COURSE_GRADE_NOW_PASSED = Signal(
 LEARNER_NOW_VERIFIED = Signal(providing_args=['user'])
 
 COURSE_PACING_CHANGED = Signal(providing_args=["updated_course_overview", "previous_self_paced"])
-
-COURSE_START_DATE_CHANGED = Signal(providing_args=["updated_course_overview", "previous_start_date"])