Fix #44: Fix an edge case while merging tags

Author: matthiask

html_sanitizer/sanitizer.py

@@ -372,7 +372,9 @@ def sanitize(self, html):
                                 nx.text,
                             )
                         else:
-                            element.text = "{}{}".format(element.text or "", nx.text)
+                            element.text = "{}{}{}".format(
+                                element.text or "", element.tail or "", nx.text
+                            )
 
                     for child in nx:
                         element.append(child)

html_sanitizer/tests.py

@@ -1,4 +1,4 @@
-from unittest import TestCase, expectedFailure
+from unittest import TestCase
 
 from .sanitizer import Sanitizer
 
@@ -666,7 +666,6 @@ def test_normalize_early(self):
             ]
         )
 
-    @expectedFailure
     def test_typographic_whitespace_tags_merging(self):
         html = "This is <strong>some</strong> <strong>text</strong> with adjacent tags."
         sanitizer = Sanitizer(
@@ -677,7 +676,7 @@ def test_typographic_whitespace_tags_merging(self):
         )
         self.run_tests(
             [
-                (html, "This is <strong>some text</strong> with adjacent tags."),
+                (html, "This is <strong>some text</strong>  with adjacent tags."),
             ],
             sanitizer=sanitizer,
         )