Make CourseOverviewFactory create new courses every time (unless otherwise specified)

common/djangoapps/student/tests/test_views.py

@@ -516,7 +516,7 @@ class StudentDashboardTests(SharedModuleStoreTestCase, MilestonesTestCaseMixin,
         course_overview = CourseOverviewFactory(
             start=self.TOMORROW, self_paced=True, enrollment_end=self.TOMORROW
         )
-        course_enrollment = CourseEnrollmentFactory(user=self.user)
+        course_enrollment = CourseEnrollmentFactory(user=self.user, course_id=course_overview.id)
         entitlement = CourseEntitlementFactory(user=self.user, enrollment_course_run=course_enrollment)
         course_runs = [{
             'key': six.text_type(course_overview.id),

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

@@ -13,10 +13,12 @@ class CourseOverviewFactory(DjangoModelFactory):
     class Meta(object):
         model = CourseOverview
         django_get_or_create = ('id', )
+        exclude = ('run', )
 
     version = CourseOverview.VERSION
     pre_requisite_courses = []
     org = 'edX'
+    run = factory.Sequence('2012_Fall_{}'.format)
 
     @factory.lazy_attribute
     def _pre_requisite_courses_json(self):
@@ -28,7 +30,7 @@ class CourseOverviewFactory(DjangoModelFactory):
 
     @factory.lazy_attribute
     def id(self):
-        return CourseLocator(self.org, 'toy', '2012_Fall')
+        return CourseLocator(self.org, 'toy', self.run)
 
     @factory.lazy_attribute
     def display_name(self):

openedx/core/djangoapps/schedules/management/commands/tests/send_email_base.py

@@ -139,6 +139,8 @@ class ScheduleSendEmailTestMixin(FilteredQueryCountMixin):
         factory_kwargs.setdefault('start', target_day)
         factory_kwargs.setdefault('upgrade_deadline', upgrade_deadline)
         factory_kwargs.setdefault('enrollment__course__self_paced', True)
+        # Make all schedules in the same course
+        factory_kwargs.setdefault('enrollment__course__run', '2012_Fall')
         if hasattr(self, 'experience_type'):
             factory_kwargs.setdefault('experience__experience_type', self.experience_type)
         schedule = ScheduleFactory(**factory_kwargs)