tests: use system hg only if changelog or dirstate can't be read
The bundled hg should work flawlessly in most cases. Make it depend on
the external installation only if necessary since we can't control the
whole environment.
This patch doesn't implement the "exit 80" idea proposed by Jun. I don't
want to keep the capability checking sync with the actual tests.
$ hg init
$ echo foo > bar
$ hg commit -Am default
adding bar
$ hg up -r null
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg branch mine
marked working directory as branch mine
(branches are permanent and global, did you want a bookmark?)
$ echo hello > world
$ hg commit -Am hello
adding world
$ hg up -r null
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg branch other
marked working directory as branch other
$ echo good > bye
$ hg commit -Am other
adding bye
$ hg up -r mine
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg clone -U -u . .#other ../b -r 0 -r 1 -r 2 -b other
abort: cannot specify both --noupdate and --updaterev
[255]
$ hg clone -U .#other ../b -r 0 -r 1 -r 2 -b other
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
$ rm -rf ../b
$ hg clone -u . .#other ../b -r 0 -r 1 -r 2 -b other
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
updating to branch mine
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
$ hg clone -u 0 .#other ../b -r 0 -r 1 -r 2 -b other
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
$ hg clone -u 1 .#other ../b -r 0 -r 1 -r 2 -b other
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
updating to branch mine
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
$ hg clone -u 2 .#other ../b -r 0 -r 1 -r 2 -b other
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
updating to branch other
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
Test -r mine ... mine is ignored:
$ hg clone -u 2 .#other ../b -r mine -r 0 -r 1 -r 2 -b other
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
updating to branch other
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
$ hg clone .#other ../b -b default -b mine
adding changesets
adding manifests
adding file changes
added 3 changesets with 3 changes to 3 files (+2 heads)
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
$ hg clone .#other ../b
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
updating to branch other
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b
$ hg clone -U . ../c -r 1 -r 2 > /dev/null
$ hg clone ../c ../b
updating to branch other
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ rm -rf ../b ../c