Resolve "Sort updated comments chronoligically"

Closes #167 (closed)

functional_tests/test_feedback_creation.py

@@ -225,6 +225,49 @@ class UntestedParent:
 
         def test_comments_are_sorted_by_last_updated(self):
             self._login()
+            go_to_subscription(self)
+
+            score_input = self.browser.find_element_by_id('score-input')
+            score_input.send_keys(self.sub_type.full_score)
+
+            # give feedback on first line
+            self.write_comments_on_lines([(1, 'first ever comment')])
+
+            submit_btn = self.browser.find_element_by_id('submit-feedback')
+            submit_btn.click()
+
+            sub_url = 'subscription/' + str(self.sub_type.pk) + '/ended'
+            WebDriverWait(self.browser, 10).until(ec.url_contains(sub_url))
+
+            reset_browser_after_test(self.browser, self.live_server_url)  # logs out user
+
+            user_snd = 'tutor_snd'
+            password = 'p'
+            fact.UserAccountFactory(username=user_snd, password=password)
+
+            login(self.browser, self.live_server_url, user_snd, password)
+            go_to_subscription(self, stage='validate')
+            self.write_comments_on_lines([(1, 'the second comment')])
+            self.browser.find_element_by_id('score-full').click()
+            self.browser.find_element_by_id('submit-feedback').click()
+
+            sub_url = 'subscription/' + str(self.sub_type.pk) + '/ended'
+            WebDriverWait(self.browser, 10).until(ec.url_contains(sub_url))
+
+            reset_browser_after_test(self.browser, self.live_server_url)  # logs out user
+            self._login()
+
+            # goto history
+
+            score_input = self.browser.find_element_by_id('score-input')
+            score_input.send_keys(self.sub_type.full_score)
+
+            # validate that second comment is under the first comment
+
+            # give feedback on first line
+            self.write_comments_on_lines([(1, 'first comment updated')])
+
+            # validate that the edited first comment is under the second comment
 
 
 class TestFeedbackCreationTutor(UntestedParent.TestFeedbackCreationGeneric):