test: add charref test

Author: timonviola

Lib/test/test_htmlparser.py

@@ -294,8 +294,9 @@ def test_cdata_content(self):
                 self._run_check(s, [("starttag", element_lower, []),
                                     ("data", content),
                                     ("endtag", element_lower)])
+
     def test_raw_text_content(self):
-        """See gh-issue #118350"""
+        # Tags should be treated as text in raw text and escapable raw text content.
         content = """<h1>tagshould be handled as text"""
         elements = [
             "script",
@@ -318,6 +319,33 @@ def test_raw_text_content(self):
                 ("data", content)
             ])
 
+    def test_escapable_raw_text_content(self):
+        # Charrefs should be escaped in esacapable raw text content.
+        class Collector(EventCollector):
+            pass
+
+        content = "Timon &amp; Pumba"
+        expected = "Timon & Pumba"
+        elements = [
+            "title",
+            "textarea",
+            "TITLE",
+            "TEXTAREA",
+            "Title",
+            "Textarea",
+        ]
+        for element in elements:
+            source = f"<{element}>{content}"
+            self._run_check(
+                source, [
+                  ("starttag", element.lower(), []),
+                  ('data', 'Timon '),
+                  ('entityref', 'amp'),
+                  ('data', ' Pumba')
+                ],
+                collector=Collector(convert_charrefs=False),
+            )
+
     def test_cdata_with_closing_tags(self):
         # see issue #13358
         # make sure that HTMLParser calls handle_data only once for each CDATA.
@@ -496,7 +524,7 @@ def test_slashes_in_starttag(self):
             ('starttag', 'a', [('foo', None), ('=', None), ('bar', None)])
         ]
         self._run_check(html, expected)
-        #see issue #14538
+        # see issue #14538
         html = ('<meta><meta / ><meta // ><meta / / >'
                 '<meta/><meta /><meta //><meta//>')
         expected = [
@@ -909,4 +937,4 @@ def test_base_class_methods_called(self, super_reset_method, super_init_method):
 
 
 if __name__ == "__main__":
-    unittest.main()
+    unittest.main()