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),