Backport FileDiff migration and condensediffs to 1.7.x.
Review Request #6229 — Created Aug. 14, 2014 and submitted
While Review Board 1.7.x introduced FileDiffData for new diffs, it never
gained the migration support. This was added for 2.0, by way of
on-access migration in FileDiff and the condensediffs management
command.Diff migration has been thoroughly tested at this point, and is known to
work really well. It's also a beneficial thing to run before an upgrade
to 2.0. This change backports everything needed to get modern
(pre-RawFileDiffData) migration in 1.7.x.
Tested on-access migration on some FileDiffs containing diff data through
the shell. Saw that, prior to diff access, there was no associated FileDiffData,
but afterwards there was.Tested that accessing diffs through the diff viewer worked and performed the migration.
Ran condensediffs and saw the progress notification and that diffs were migrated.
Verified the results.
Tool: Pyflakes Processed Files: reviewboard/diffviewer/models.py reviewboard/diffviewer/management/commands/condensediffs.py reviewboard/diffviewer/managers.py reviewboard/diffviewer/tests.py Ignored Files: reviewboard/diffviewer/management/__init__.py reviewboard/diffviewer/management/commands/__init__.py Tool: PEP8 Style Checker Processed Files: reviewboard/diffviewer/models.py reviewboard/diffviewer/management/commands/condensediffs.py reviewboard/diffviewer/managers.py reviewboard/diffviewer/tests.py Ignored Files: reviewboard/diffviewer/management/__init__.py reviewboard/diffviewer/management/commands/__init__.py