Fix: handle page count exception for pw-protected files (#8240)

src/paperless_tesseract/tests/test_parser.py

@@ -81,6 +81,24 @@ class TestParser(DirectoriesMixin, FileSystemAssertsMixin, TestCase):
         )
         self.assertEqual(page_count, 6)
 
+    def test_get_page_count_password_protected(self):
+        """
+        GIVEN:
+            - Password protected PDF file
+        WHEN:
+            - The number of pages is requested
+        THEN:
+            - The method returns None
+        """
+        parser = RasterisedDocumentParser(uuid.uuid4())
+        with self.assertLogs("paperless.parsing.tesseract", level="WARNING") as cm:
+            page_count = parser.get_page_count(
+                os.path.join(self.SAMPLE_FILES, "password-protected.pdf"),
+                "application/pdf",
+            )
+            self.assertEqual(page_count, None)
+            self.assertIn("Unable to determine PDF page count", cm.output[0])
+
     def test_thumbnail(self):
         parser = RasterisedDocumentParser(uuid.uuid4())
         thumb = parser.get_thumbnail(