Show Enroll Now banner to staff.

LEARNER-2249

Allow staff to see the Enroll Now banner, matching the functionality of
the in course home messaging and showing the actual page that the
students can see before being enrolled.

lms/djangoapps/courseware/views/views.py

@@ -407,12 +407,14 @@ class CourseTabView(EdxFragmentView):
         with modulestore().bulk_operations(course_key):
             course = get_course_with_access(request.user, 'load', course_key)
             try:
-                # Show warnings if the user has limited access
-                self.register_user_access_warning_messages(request, course_key)
-
                 # Render the page
                 tab = CourseTabList.get_tab_by_type(course.tabs, tab_type)
                 page_context = self.create_page_context(request, course=course, tab=tab, **kwargs)
+
+                # Show warnings if the user has limited access
+                # Must come after masquerading on creation of page context
+                self.register_user_access_warning_messages(request, course_key)
+
                 set_custom_metrics_for_course_key(course_key)
                 return super(CourseTabView, self).get(request, course=course, page_context=page_context, **kwargs)
             except Exception as exception:  # pylint: disable=broad-except
@@ -434,7 +436,6 @@ class CourseTabView(EdxFragmentView):
         Register messages to be shown to the user if they have limited access.
         """
         is_enrolled = CourseEnrollment.is_enrolled(request.user, course_key)
-        is_staff = has_access(request.user, 'staff', course_key)
         if request.user.is_anonymous():
             PageLevelMessages.register_warning_message(
                 request,
@@ -449,7 +450,7 @@ class CourseTabView(EdxFragmentView):
                     ),
                 )
             )
-        elif not is_enrolled and not is_staff:
+        elif not is_enrolled:
             # Only show enroll button if course is open for enrollment.
             if course_open_for_self_enrollment(course_key):
                 enroll_message = _('You must be enrolled in the course to see course content. \

openedx/features/course_experience/tests/views/test_course_home.py

@@ -204,7 +204,7 @@ class TestCourseHomePageAccess(CourseHomePageTestCase):
         [CourseUserType.ANONYMOUS, 'To see course content'],
         [CourseUserType.ENROLLED, None],
         [CourseUserType.UNENROLLED, 'You must be enrolled in the course to see course content.'],
-        [CourseUserType.UNENROLLED_STAFF, None],
+        [CourseUserType.UNENROLLED_STAFF, 'You must be enrolled in the course to see course content.'],
     )
     @ddt.unpack
     def test_home_page(self, user_type, expected_message):
@@ -239,7 +239,7 @@ class TestCourseHomePageAccess(CourseHomePageTestCase):
         [CourseUserType.ANONYMOUS, 'To see course content'],
         [CourseUserType.ENROLLED, None],
         [CourseUserType.UNENROLLED, 'You must be enrolled in the course to see course content.'],
-        [CourseUserType.UNENROLLED_STAFF, None],
+        [CourseUserType.UNENROLLED_STAFF, 'You must be enrolled in the course to see course content.'],
     )
     @ddt.unpack
     def test_home_page_not_unified(self, user_type, expected_message):