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.
# initial file contents
adding f
line 1
line 2
line 3
# branch 1: editing line 1
# branch 2: editing line 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
created new head
# merge using internal:fail tool
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C' to abandon
line 1
line 2
third line
M f
# merge using internal:local tool
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
line 1
line 2
third line
M f
# merge using internal:other tool
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
first line
line 2
line 3
M f
# merge using default tool
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
first line
line 2
third line
M f