.

wcfs/wcfs_test.py

@@ -1119,8 +1119,7 @@ def _expectPin(twlink, ctx, zf, expect): # -> []SrvReq
 # _blkDataAt returns expected zf[blk] data and its revision as of @at database state.
 #
 # If the block is hole - (b'', at0) is returned.  XXX -> @z64?
-# XXX ret for when the file did not existed at all?
-# XXX ret ----//---- blk was after file size?
+# Hole include cases when the file does not exists, or when blk is > file size.
 @func(tDB)
 def _blkDataAt(t, zf, blk, at): # -> (data, rev)
     if at is None:
@@ -1132,9 +1131,9 @@ def _blkDataAt(t, zf, blk, at): # -> (data, rev)
     # changes to zf[blk] <= at
     blkhistoryat = [_ for _ in vdf if blk in _.ddata and _.rev <= at]
     if len(blkhistoryat) == 0:
-        # blk did not existed @at       # XXX verify whether file was existing at all
+        # blk did not existed @at
         data = b''
-        rev  = t.dFtail[0].rev  # was hole - at0    XXX -> pin to z64
+        rev  = t.dFtail[0].rev  # was hole - at0
     else:
         _ = blkhistoryat[-1]
         data = _.ddata[blk]