Remove dangling references from document.xml.rels

The file `word/_rels/document.xml.rels` is similar to `[Content_Types].xml` and
has references to other files in the archive. If those references aren't
removed Word refuses to open the document. # Please enter the commit message
for your changes. Lines starting

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/test_libmat2.py b/tests/test_libmat2.py
index 491f396..7855062 100644
--- a/tests/test_libmat2.py
+++ b/tests/test_libmat2.py
@@ -931,3 +931,24 @@ class TextDocx(unittest.TestCase):
 
         os.remove('./tests/data/comment_clean.docx')
         os.remove('./tests/data/comment_clean.cleaned.docx')
+
+    def test_clean_document_xml_rels(self):
+        with zipfile.ZipFile('./tests/data/comment.docx') as zipin:
+            c = zipin.open('word/_rels/document.xml.rels')
+            content = c.read()
+            r = b'Target="comments.xml"'
+            self.assertIn(r, content)
+
+        shutil.copy('./tests/data/comment.docx', './tests/data/comment_clean.docx')
+        p = office.MSOfficeParser('./tests/data/comment_clean.docx')
+        self.assertTrue(p.remove_all())
+
+        with zipfile.ZipFile('./tests/data/comment_clean.cleaned.docx') as zipin:
+            c = zipin.open('word/_rels/document.xml.rels')
+            content = c.read()
+            r = b'Target="comments.xml"'
+            self.assertNotIn(r, content)
+
+        os.remove('./tests/data/comment_clean.docx')
+        os.remove('./tests/data/comment_clean.cleaned.docx')
+