tests/test-walkrepo.py

update: no -C needed to switch branches without outstanding changes

import os
import os.path
from mercurial import hg, ui
from mercurial.util import walkrepos, set, frozenset
from os import mkdir, chdir
from os.path import join as pjoin

u = ui.ui()
sym = hasattr(os, 'symlink') and hasattr(os.path, 'samestat')

hg.repository(u, 'top1', create=1)
mkdir('subdir')
chdir('subdir')
hg.repository(u, 'sub1', create=1)
mkdir('subsubdir')
chdir('subsubdir')
hg.repository(u, 'subsub1', create=1)
chdir(os.path.pardir)
if sym:
    os.symlink(os.path.pardir, 'circle')
    os.symlink(pjoin('subsubdir', 'subsub1'), 'subsub1')

def runtest():
    reposet = frozenset(walkrepos('.', followsym=True))
    if sym and (len(reposet) != 3):
        print "reposet = %r" % (reposet,)
        raise SystemExit(1, "Found %d repositories when I should have found 3" % (len(reposet),))
    if (not sym) and (len(reposet) != 2):
        print "reposet = %r" % (reposet,)
        raise SystemExit(1, "Found %d repositories when I should have found 2" % (len(reposet),))
    sub1set = frozenset((pjoin('.', 'sub1'),
                         pjoin('.', 'circle', 'subdir', 'sub1')))
    if len(sub1set & reposet) != 1:
        print "sub1set = %r" % (sub1set,)
        print "reposet = %r" % (reposet,)
        raise SystemExit(1, "sub1set and reposet should have exactly one path in common.")
    sub2set = frozenset((pjoin('.', 'subsub1'),
                         pjoin('.', 'subsubdir', 'subsub1')))
    if len(sub2set & reposet) != 1:
        print "sub2set = %r" % (sub2set,)
        print "reposet = %r" % (reposet,)
        raise SystemExit(1, "sub1set and reposet should have exactly one path in common.")
    sub3 = pjoin('.', 'circle', 'top1')
    if sym and not (sub3 in reposet):
        print "reposet = %r" % (reposet,)
        raise SystemExit(1, "Symbolic links are supported and %s is not in reposet" % (sub3,))

runtest()
if sym:
    # Simulate not having symlinks.
    del os.path.samestat
    sym = False
    runtest()