tree 2f2b513e054385467e1970fff2220755b1118302
parent c5387b9b172508a4acb54f5323bdb460ece72db0
author K. Moon <kmoon@chromium.org> 1676484165 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1676484165 +0000

Reuse expectations in --regenerate_expected

Improves --regenerate_expected heuristics as follows:

1. Reuses the least specific expected image that exists.
2. Removes non-matching or redundant expected images.
3. Detects and removes expected images for excess pages, rather than
   stopping at the last "actual" page.

These improvements should reduce manual work when a change reduces
differences with less specific expected images. Removals still must be
reviewed manually, since the heuristics decide without global knowledge
about other test configurations which might still need a given image.

Fixed: pdfium:1987
Change-Id: I32393cefe95509c18cd9cc42aa5fa43b61524ec0
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/103770
Commit-Queue: K. Moon <kmoon@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>