Fix failing tests from #9250 (#9307)

airflow/www/views.py

@@ -1508,8 +1508,6 @@ def recurse_nodes(task, visited):
 
         # avoid spaces to reduce payload size
         data = htmlsafe_json_dumps(data, separators=(',', ':'))
-        # escape slashes to avoid JSON parse error in JS
-        data = data.replace('\\', '\\\\')
 
         return self.render_template(
             'airflow/tree.html',

tests/www/test_views.py

@@ -627,11 +627,12 @@ def test_view_uses_existing_dagbag(self, endpoint, mock_get_dag):
         self.check_content_in_response('example_bash_operator', resp)
 
     @parameterized.expand([
-        ("hello\nworld", "hello\\\\nworld"),
-        ("hello'world", "hello\\\\u0027world"),
-        ("<script>", "\\\\u003cscript\\\\u003e"),
+        ("hello\nworld", r'\"conf\":{\"abc\":\"hello\\nworld\"}}'),
+        ("hello'world", r'\"conf\":{\"abc\":\"hello\\u0027world\"}}'),
+        ("<script>", r'\"conf\":{\"abc\":\"\\u003cscript\\u003e\"}}'),
+        ("\"", r'\"conf\":{\"abc\":\"\\\"\"}}'),
     ])
-    def test_escape_in_tree_view(self, test_str, seralized_test_str):
+    def test_escape_in_tree_view(self, test_str, expected_text):
         dag = self.dagbag.dags['test_tree_view']
         dag.create_dagrun(
             execution_date=self.EXAMPLE_DAG_DEFAULT_DATE,
@@ -643,7 +644,7 @@ def test_escape_in_tree_view(self, test_str, seralized_test_str):
 
         url = 'tree?dag_id=test_tree_view'
         resp = self.client.get(url, follow_redirects=True)
-        self.check_content_in_response(f'"conf":{{"abc":"{seralized_test_str}"}}', resp)
+        self.check_content_in_response(expected_text, resp)
 
     def test_dag_details_trigger_origin_tree_view(self):
         dag = self.dagbag.dags['test_tree_view']