MAINT: Change to document information dictionary (#3232)

Author: j-t-1

pypdf/_reader.py

@@ -257,7 +257,7 @@ def _info(self) -> Optional[DictionaryObject]:
         info = info.get_object()
         if not isinstance(info, DictionaryObject):
             raise PdfReadError(
-                "Trailer not found or does not point to document information directory"
+                "Trailer not found or does not point to a document information dictionary"
             )
         return info
 

tests/test_reader.py

@@ -155,7 +155,7 @@ def test_broken_meta_data(pdf_path):
     reader = PdfReader(BytesIO(b.replace(b"/Info 2 0 R", b"/Info 2    ")))
     with pytest.raises(PdfReadError) as exc:
         reader.metadata
-    assert "does not point to document information directory" in repr(exc)
+    assert "does not point to a document information dictionary" in repr(exc)
 
 
 @pytest.mark.parametrize(