Fix markdown editor reference link having colon issue

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

@@ -143,6 +143,11 @@ class DiscussionThreadPage(PageObject, DiscussionPageMixin):
                 "Response edit started"
             ).fulfill()
 
+    def get_link_href(self):
+        """Extracts href attribute of the referenced link"""
+        link_href = self._find_within(".post-body p a").attrs('href')
+        return link_href[0] if link_href else None
+
     def get_response_vote_count(self, response_id):
         return self._get_element_text(".response_{} .discussion-response .action-vote .vote-count".format(response_id))
 

common/test/acceptance/tests/discussion/test_discussion.py

@@ -236,6 +236,26 @@ class DiscussionTabSingleThreadTest(BaseDiscussionTestCase, DiscussionResponsePa
         self.assertTrue(self.thread_page.is_mathjax_preview_available())
         self.assertTrue(self.thread_page.is_mathjax_rendered())
 
+    def test_markdown_reference_link(self):
+        """
+        Check markdown editor renders reference link correctly
+        and colon(:) in reference link is not converted to %3a
+        """
+        sample_link = "http://example.com/colon:test"
+        thread_content = """[enter link description here][1]\n[1]: http://example.com/colon:test"""
+        thread_id = "test_thread_{}".format(uuid4().hex)
+        thread_fixture = SingleThreadViewFixture(
+            Thread(
+                id=thread_id,
+                body=thread_content,
+                commentable_id=self.discussion_id,
+                thread_type="discussion"
+            )
+        )
+        thread_fixture.push()
+        self.setup_thread_page(thread_id)
+        self.assertEqual(self.thread_page.get_link_href(), sample_link)
+
     def test_marked_answer_comments(self):
         thread_id = "test_thread_{}".format(uuid4().hex)
         response_id = "test_response_{}".format(uuid4().hex)