add one more test to verify that deleting one courses forum permissions does not…

add one more test to verify that deleting one courses forum permissions does not accidentially delete another course's forum seeding

cms/djangoapps/contentstore/tests/test_contentstore.py

@@ -1302,7 +1302,7 @@ class ContentStoreTest(ModuleStoreTestCase):
         self.assertFalse(are_permissions_roles_seeded(course_id))
 
     def test_forum_unseeding_with_different_casing(self):
-        """Test new course creation and verify forum seeding """
+        """Test new course creation and verify forum unseeding """
         test_course_data = self.assert_created_course(number_suffix=uuid4().hex)
         # make sure we don't delete a forum permissions set with different casing
         # than the passed in course_id. This is because Mongo and MySQL are using different collations
@@ -1311,6 +1311,20 @@ class ContentStoreTest(ModuleStoreTestCase):
         # permissions should still be there!
         self.assertTrue(are_permissions_roles_seeded(course_id))
 
+    def test_forum_unseeding_with_multiple_courses(self):
+        """Test new course creation and verify forum unseeding when there are multiple courses"""
+        test_course_data = self.assert_created_course(number_suffix=uuid4().hex)
+        second_course_data = self.assert_created_course(number_suffix=uuid4().hex)
+
+        # unseed the forums for the first course
+        course_id = self._get_course_id(test_course_data)
+        unseed_permissions_roles(course_id)
+        self.assertFalse(are_permissions_roles_seeded(course_id))
+
+        second_course_id = self._get_course_id(second_course_data)
+        # permissions should still be there for the other course
+        self.assertTrue(are_permissions_roles_seeded(second_course_id))
+
     def _get_course_id(self, test_course_data):
         """Returns the course ID (org/number/run)."""
         return "{org}/{number}/{run}".format(**test_course_data)