Show thread user to staff when only anonymous_to_peers is true

FOR-122

common/test/acceptance/fixtures/discussion.py

@@ -30,6 +30,8 @@ class ContentFactory(factory.Factory):
 
 
 class Thread(ContentFactory):
+    anonymous = False
+    anonymous_to_peers = False
     comments_count = 0
     unread_comments_count = 0
     title = "dummy thread title"

common/test/acceptance/pages/lms/discussion.py

@@ -267,6 +267,9 @@ class InlineDiscussionThreadPage(DiscussionThreadPage):
             "Thread expanded"
         ).fulfill()
 
+    def is_thread_anonymous(self):
+        return not self.q(css=".posted-details > .username").present
+
 
 class DiscussionUserProfilePage(CoursePage):
 

common/test/acceptance/tests/test_discussion.py

@@ -297,7 +297,8 @@ class InlineDiscussionTest(UniqueCourseTest, DiscussionResponsePaginationTestMix
 
         AutoAuthPage(self.browser, course_id=self.course_id).visit()
 
-        CoursewarePage(self.browser, self.course_id).visit()
+        self.courseware_page = CoursewarePage(self.browser, self.course_id)
+        self.courseware_page.visit()
         self.discussion_page = InlineDiscussionPage(self.browser, self.discussion_id)
 
     def setup_thread_page(self, thread_id):
@@ -313,6 +314,21 @@ class InlineDiscussionTest(UniqueCourseTest, DiscussionResponsePaginationTestMix
         self.discussion_page.expand_discussion()
         self.assertEqual(self.discussion_page.get_num_displayed_threads(), 0)
 
+    def check_anonymous_to_peers(self, is_staff):
+        thread = Thread(id=uuid4().hex, anonymous_to_peers=True, commentable_id=self.discussion_id)
+        thread_fixture = SingleThreadViewFixture(thread)
+        thread_fixture.push()
+        self.setup_thread_page(thread.get("id"))
+        self.assertEqual(self.thread_page.is_thread_anonymous(), not is_staff)
+
+    def test_anonymous_to_peers_threads_as_staff(self):
+        AutoAuthPage(self.browser, course_id=self.course_id, roles="Administrator").visit()
+        self.courseware_page.visit()
+        self.check_anonymous_to_peers(True)
+
+    def test_anonymous_to_peers_threads_as_peer(self):
+        self.check_anonymous_to_peers(False)
+
 
 class DiscussionUserProfileTest(UniqueCourseTest):
     """