fix: Stop showing course certificate buttons to beta testers (#28416)

Beta testers can’t earn course certificates, so they should not see a “Request Certificate” button or other info describing how they can earn a cert.

MICROBA-992

common/djangoapps/student/helpers.py

@@ -44,6 +44,7 @@ from lms.djangoapps.certificates.api import (
 )
 from lms.djangoapps.certificates.data import CertificateStatuses
 from lms.djangoapps.grades.api import CourseGradeFactory
+from lms.djangoapps.instructor import access
 from lms.djangoapps.verify_student.models import VerificationDeadline
 from lms.djangoapps.verify_student.services import IDVerificationService
 from lms.djangoapps.verify_student.utils import is_verification_expiring_soon, verification_for_datetime
@@ -465,6 +466,10 @@ def _cert_info(user, enrollment, cert_status):
     """
     Implements the logic for cert_info -- split out for testing.
 
+    TODO: replace with a method that lives in the certificates app and combines this logic with
+     openedx.core.djangoapps.certificates.api.can_show_certificate_message and
+     lms.djangoapps.courseware.views.get_cert_data
+
     Arguments:
         user (User): A user.
         enrollment (CourseEnrollment): A course enrollment.
@@ -526,6 +531,10 @@ def _cert_info(user, enrollment, cert_status):
     if not CourseMode.is_eligible_for_certificate(enrollment.mode, status=status):
         return default_info
 
+    if course_overview and access.is_beta_tester(user, course_overview.id):
+        # Beta testers are not eligible for a course certificate
+        return default_info
+
     status_dict = {
         'status': status,
         'mode': cert_status.get('mode', None),

common/djangoapps/student/tests/tests.py

@@ -54,6 +54,8 @@ from xmodule.data import CertificatesDisplayBehaviors
 
 log = logging.getLogger(__name__)
 
+BETA_TESTER_METHOD = 'common.djangoapps.student.helpers.access.is_beta_tester'
+
 
 @unittest.skipUnless(settings.ROOT_URLCONF == 'lms.urls', 'Test only valid in lms')
 @ddt.ddt
@@ -169,6 +171,45 @@ class CourseEndingTest(ModuleStoreTestCase):
         assert _cert_info(user, enrollment3, cert_status) == {'status': 'processing', 'show_survey_button': False,
                                                               'can_unenroll': True}
 
+    def test_cert_info_beta_tester(self):
+        user = UserFactory.create()
+        course = CourseOverviewFactory.create()
+        mode = CourseMode.VERIFIED
+        grade = '0.67'
+        status = CertificateStatuses.downloadable
+        cert = GeneratedCertificateFactory.create(
+            user=user,
+            course_id=course.id,
+            status=status,
+            mode=mode
+        )
+        enrollment = CourseEnrollmentFactory(user=user, course_id=course.id, mode=mode)
+
+        cert_status = {
+            'status': status,
+            'grade': grade,
+            'download_url': cert.download_url,
+            'mode': mode,
+            'uuid': 'blah',
+        }
+        with patch(BETA_TESTER_METHOD, return_value=False):
+            assert _cert_info(user, enrollment, cert_status) == {
+                'status': status,
+                'download_url': cert.download_url,
+                'show_survey_button': False,
+                'grade': grade,
+                'mode': mode,
+                'linked_in_url': None,
+                'can_unenroll': False
+            }
+
+        with patch(BETA_TESTER_METHOD, return_value=True):
+            assert _cert_info(user, enrollment, cert_status) == {
+                'status': 'processing',
+                'show_survey_button': False,
+                'can_unenroll': True
+            }
+
     @ddt.data(
         (0.70, 0.60),
         (0.60, 0.70),
@@ -823,7 +864,7 @@ class EnrollInCourseTest(EnrollmentEventTestMixin, CacheIsolationTestCase):
         assert CourseEnrollment.is_enrolled(user, course_id)
         self.assert_no_events_were_emitted()
 
-        # Now deactive
+        # Now deactivate
         enrollment.deactivate()
         assert not CourseEnrollment.is_enrolled(user, course_id)
         self.assert_unenrollment_event_was_emitted(user, course_id, course, enrollment)