feat: add Waffle Flag to disable resetting self-paced deadlines by le…

…arners

(cherry picked from commit 0258971)

openedx/features/course_experience/__init__.py

@@ -50,6 +50,16 @@
 # .. toggle_tickets: https://openedx.atlassian.net/browse/AA-27
 RELATIVE_DATES_FLAG = CourseWaffleFlag(f'{WAFFLE_FLAG_NAMESPACE}.relative_dates', __name__)  # lint-amnesty, pylint: disable=toggle-missing-annotation
 
+# .. toggle_name: course_experience.relative_dates_disable_reset
+# .. toggle_implementation: CourseWaffleFlag
+# .. toggle_default: False
+# .. toggle_description: Waffle flag to disable resetting deadlines by learners in self-paced courses. The 'Dates' tab
+#   will no longer show a banner about missed deadlines. The deadlines banner will also be hidden on unit pages.
+# .. toggle_use_cases: open_edx
+# .. toggle_creation_date: 2023-04-27
+# .. toggle_warning: For this toggle to have an effect, the RELATIVE_DATES_FLAG toggle must be enabled, too.
+RELATIVE_DATES_DISABLE_RESET_FLAG = CourseWaffleFlag(f'{WAFFLE_FLAG_NAMESPACE}.relative_dates_disable_reset', __name__)
+
 # .. toggle_name: course_experience.calendar_sync
 # .. toggle_implementation: CourseWaffleFlag
 # .. toggle_default: False

openedx/features/course_experience/api/v1/tests/test_views.py

@@ -2,17 +2,19 @@
 Tests for reset deadlines endpoint.
 """
 import datetime
-import ddt
 
+import ddt
 from django.urls import reverse
 from django.utils import timezone
+from edx_toggles.toggles.testutils import override_waffle_flag
 
 from common.djangoapps.course_modes.models import CourseMode
 from common.djangoapps.student.models import CourseEnrollment
 from common.djangoapps.util.testing import EventTestMixin
-from lms.djangoapps.courseware.tests.helpers import MasqueradeMixin
 from lms.djangoapps.course_home_api.tests.utils import BaseCourseHomeTests
+from lms.djangoapps.courseware.tests.helpers import MasqueradeMixin
 from openedx.core.djangoapps.schedules.models import Schedule
+from openedx.features.course_experience import RELATIVE_DATES_DISABLE_RESET_FLAG, RELATIVE_DATES_FLAG
 from xmodule.modulestore.tests.factories import CourseFactory  # lint-amnesty, pylint: disable=wrong-import-order
 
 
@@ -25,17 +27,22 @@ def setUp(self):  # pylint: disable=arguments-differ
         # Need to supply tracker name for the EventTestMixin. Also, EventTestMixin needs to come
         # first in class inheritance so the setUp call here appropriately works
         super().setUp('openedx.features.course_experience.api.v1.views.tracker')
+        self.course = CourseFactory.create(self_paced=True, start=timezone.now() - datetime.timedelta(days=1000))
 
     def test_reset_deadlines(self):
-        CourseEnrollment.enroll(self.user, self.course.id, CourseMode.VERIFIED)
+        enrollment = CourseEnrollment.enroll(self.user, self.course.id, CourseMode.VERIFIED)
+        enrollment.schedule.start_date = timezone.now() - datetime.timedelta(days=100)
+        enrollment.schedule.save()
         # Test body with incorrect body param (course_key is required)
         response = self.client.post(reverse('course-experience-reset-course-deadlines'), {'course': self.course.id})
         assert response.status_code == 400
+        assert enrollment.schedule == Schedule.objects.get(id=enrollment.schedule.id)
         self.assert_no_events_were_emitted()
 
         # Test correct post body
         response = self.client.post(reverse('course-experience-reset-course-deadlines'), {'course_key': self.course.id})
         assert response.status_code == 200
+        assert enrollment.schedule.start_date < Schedule.objects.get(id=enrollment.schedule.id).start_date
         self.assert_event_emitted(
             'edx.ui.lms.reset_deadlines.clicked',
             courserun_key=str(self.course.id),
@@ -45,33 +52,44 @@ def test_reset_deadlines(self):
             user_id=self.user.id,
         )
 
+    @override_waffle_flag(RELATIVE_DATES_FLAG, active=True)
+    @override_waffle_flag(RELATIVE_DATES_DISABLE_RESET_FLAG, active=True)
+    def test_reset_deadlines_disabled(self):
+        enrollment = CourseEnrollment.enroll(self.user, self.course.id, CourseMode.VERIFIED)
+        enrollment.schedule.start_date = timezone.now() - datetime.timedelta(days=100)
+        enrollment.schedule.save()
+
+        response = self.client.post(reverse('course-experience-reset-course-deadlines'), {'course_key': self.course.id})
+        assert response.status_code == 200
+        assert enrollment.schedule == Schedule.objects.get(id=enrollment.schedule.id)
+        self.assert_no_events_were_emitted()
+
     def test_reset_deadlines_with_masquerade(self):
         """ Staff users should be able to masquerade as a learner and reset the learner's schedule """
-        course = CourseFactory.create(self_paced=True, start=timezone.now() - datetime.timedelta(days=1))
         student_username = self.user.username
         student_user_id = self.user.id
-        student_enrollment = CourseEnrollment.enroll(self.user, course.id)
+        student_enrollment = CourseEnrollment.enroll(self.user, self.course.id)
         student_enrollment.schedule.start_date = timezone.now() - datetime.timedelta(days=100)
         student_enrollment.schedule.save()
 
-        staff_enrollment = CourseEnrollment.enroll(self.staff_user, course.id)
+        staff_enrollment = CourseEnrollment.enroll(self.staff_user, self.course.id)
         staff_enrollment.schedule.start_date = timezone.now() - datetime.timedelta(days=30)
         staff_enrollment.schedule.save()
 
         self.switch_to_staff()
-        self.update_masquerade(course=course, username=student_username)
+        self.update_masquerade(course=self.course, username=student_username)
 
-        self.client.post(reverse('course-experience-reset-course-deadlines'), {'course_key': course.id})
+        self.client.post(reverse('course-experience-reset-course-deadlines'), {'course_key': self.course.id})
         updated_schedule = Schedule.objects.get(id=student_enrollment.schedule.id)
         assert updated_schedule.start_date.date() == datetime.datetime.today().date()
         updated_staff_schedule = Schedule.objects.get(id=staff_enrollment.schedule.id)
         assert updated_staff_schedule.start_date == staff_enrollment.schedule.start_date
         self.assert_event_emitted(
             'edx.ui.lms.reset_deadlines.clicked',
-            courserun_key=str(course.id),
+            courserun_key=str(self.course.id),
             is_masquerading=True,
             is_staff=False,
-            org_key=course.org,
+            org_key=self.course.org,
             user_id=student_user_id,
         )
 

openedx/features/course_experience/utils.py

@@ -9,7 +9,7 @@
 from lms.djangoapps.course_blocks.api import get_course_blocks
 from openedx.core.djangoapps.content.course_overviews.models import CourseOverview
 from openedx.core.lib.cache_utils import request_cached
-from openedx.features.course_experience import RELATIVE_DATES_FLAG
+from openedx.features.course_experience import RELATIVE_DATES_DISABLE_RESET_FLAG, RELATIVE_DATES_FLAG
 from common.djangoapps.student.models import CourseEnrollment
 from xmodule.modulestore.django import modulestore  # lint-amnesty, pylint: disable=wrong-import-order
 
@@ -155,6 +155,14 @@ def dates_banner_should_display(course_key, user):
     if not RELATIVE_DATES_FLAG.is_enabled(course_key):
         return False, False
 
+    if RELATIVE_DATES_DISABLE_RESET_FLAG.is_enabled(course_key):
+        # The `missed_deadlines` value is ignored by `reset_course_deadlines` views. Instead, they check the value of
+        # `missed_gated_content` to determine if learners can reset the deadlines by themselves.
+        # We could have added this logic directly to `reset_self_paced_schedule`, but this function is used in other
+        # places (e.g., when an enrollment mode is changed). We want this flag to affect only the use case when
+        # learners try to reset their deadlines.
+        return False, True
+
     course_overview = CourseOverview.objects.get(id=str(course_key))
 
     # Only display the banner for self-paced courses