verify: fix "missing revlog!" errors for revlog format v0 and add test
With revlog format v0 the .d files are empty if the only revision stored is an
empty file. Since Mercurial can no longer create format v0 repositories, but
still use it, add a script which creates a repository with a single empty file.
This can be used in other tests if wanted.
% prepare repo
adding FOO.txt
adding QUICK.txt
adding bar.txt
% verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 1 changesets, 3 total revisions
% verify with journal
abandoned transaction found - run hg recover
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 1 changesets, 3 total revisions
% introduce some bugs in repo
% verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
data/FOO.txt.i@0: missing revlog!
0: empty or missing FOO.txt
FOO.txt@0: f62022d3d590 in manifests not found
data/QUICK.txt.i@0: missing revlog!
0: empty or missing QUICK.txt
QUICK.txt@0: 88b857db8eba in manifests not found
data/bar.txt.i@0: missing revlog!
0: empty or missing bar.txt
bar.txt@0: 256559129457 in manifests not found
3 files, 1 changesets, 0 total revisions
9 integrity errors encountered!
(first damaged changeset appears to be 0)
% test revlog corruption
% verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
a@0: broken revlog! (index data/a.i is corrupted)
warning: orphan revlog 'data/a.i'
1 files, 1 changesets, 0 total revisions
1 warnings encountered!
1 integrity errors encountered!
(first damaged changeset appears to be 0)
% test revlog format 0
repository uses revlog format 0
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions