Handle anonymous and unenrolled users on the new course home page

LEARNER-1696

openedx/features/course_experience/plugins.py

@@ -8,6 +8,7 @@ from django.utils.translation import ugettext as _
 
 from course_tools import CourseTool
 from courseware.courses import get_course_by_id
+from student.models import CourseEnrollment
 from views.course_reviews import CourseReviewsModuleFragmentView
 from views.course_updates import CourseUpdatesFragmentView
 
@@ -35,11 +36,14 @@ class CourseUpdatesTool(CourseTool):
     @classmethod
     def is_enabled(cls, request, course_key):
         """
-        Returns True if this tool is enabled for the specified course key.
+        Returns True if the user should be shown course updates for this course.
         """
+        if not UNIFIED_COURSE_TAB_FLAG.is_enabled(course_key):
+            return False
+        if not CourseEnrollment.is_enrolled(request.user, course_key):
+            return False
         course = get_course_by_id(course_key)
-        has_updates = CourseUpdatesFragmentView.has_updates(request, course)
-        return UNIFIED_COURSE_TAB_FLAG.is_enabled(course_key) and has_updates
+        return CourseUpdatesFragmentView.has_updates(request, course)
 
     @classmethod
     def url(cls, course_key):
@@ -72,8 +76,9 @@ class CourseReviewsTool(CourseTool):
         """
         Returns True if this tool is enabled for the specified course key.
         """
-        reviews_configured = CourseReviewsModuleFragmentView.is_configured()
-        return SHOW_REVIEWS_TOOL_FLAG.is_enabled(course_key) and reviews_configured
+        if not SHOW_REVIEWS_TOOL_FLAG.is_enabled(course_key):
+            return False
+        return CourseReviewsModuleFragmentView.is_configured()
 
     @classmethod
     def url(cls, course_key):