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#! /usr/bin/python2.4
# Copyright 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.
__author__ = "Nils Klarlund"
import os
import os.path
import basics
import cache_basics
import mirror_path
import shutil
import tempfile
import unittest
NotCoveredError = basics.NotCoveredError
class MirrorPathTest(unittest.TestCase):
"""We construct a mock-up world of a file system in order to
unittest the DoPath function of mirror_path."""
def setUp(self):
basics.debug_pattern = 3
self.tmp = tempfile.mkdtemp()
caches = cache_basics.SetUpCaches(self.tmp)
self.canonical_path = caches.canonical_path
self.simple_build_stat = caches.simple_build_stat
self.mirror_path = mirror_path.MirrorPath(self.simple_build_stat,
self.canonical_path,
caches.realpath_map,
caches.systemdir_prefix_cache)
self.directories = ['/', '/a', '/link', '/a/link', '/a/b',
'/link/link', '/root']
self.links = ['/a/link', '/link', '/link/link']
self.exists = self.directories + self.links
self.realpaths = {'/' :'/',
'/a' :'/a',
'/a/link' :'/a/b',
'/link' :'/a',
'/link/link':'/a/b'}
def tearDown(self):
shutil.rmtree(self.tmp)
def test_MirrorPath(self):
try:
def isdir(path):
return path in self.directories
def exists(path):
return path in self.exists
def islink(path):
return path in self.links
def realpath(path):
if path.startswith('/root'):
self.fail("Not expected that '%s' startd with '/root'." % path)
return self.realpaths[path]
def makedirs(path):
if path == '/root/a':
self.directories.extend(['/root/a'])
self.exists.extend(['/root/a'])
else:
self.fail("makedirs %s" % path)
def symlink(src, dest):
if not (src, dest) in [ ('/a', '/root/link'),
('/a/b', '/root/a/link') ]:
self.fail("symlink %s %s" % (src, dest))
self.links.append(dest)
self.exists.append(dest)
# Overwrite the canonicalization function that MirrorPath uses.
self.mirror_path.canonical_path.Canonicalize = realpath
# Overwrite various system functions that MirrorPath uses.
isdir_ = os.path.isdir
os.path.isdir = isdir
exists_ = os.path.exists
os.path.exists = exists
islink_ = os.path.islink
os.path.islink = islink
makedirs_ = os.makedirs
os.makedirs = makedirs
symlink_ = os.symlink
os.symlink = symlink
# Mirror the link /a/link.
self.mirror_path.DoPath('/a/link', 117, '/root')
self.assertEqual(self.mirror_path.Links(), ['/root/a/link'])
self.assert_(self.simple_build_stat.Lookup('/root/a'))
# Check that symlink function is not called again, by verifying
# that mirror_path.Links() doesn't grow.
self.mirror_path.DoPath('/a/link', 117, '/root')
self.assertEqual(self.mirror_path.Links(), ['/root/a/link'])
# Now mirror /link/link.
self.mirror_path.DoPath('/link/link', 117, '/root')
self.assertEqual(self.mirror_path.Links(), ['/root/a/link', '/root/link'])
self.assertEqual(
[ d for d in self.directories if d.startswith('/root') ],
[ '/root', '/root/a' ])
self.assertEqual(
[ d for d in self.links if d.startswith('/root') ],
[ '/root/a/link', '/root/link' ])
# Now mirror /a/b. Since b is a file and /a already is mirrored,
# there is no effect.
self.mirror_path.DoPath('/a/b', 117, '/root')
self.assertEqual(self.mirror_path.Links(), ['/root/a/link', '/root/link'])
self.assertEqual(
[ d for d in self.directories if d.startswith('/root') ],
[ '/root', '/root/a' ])
self.assertEqual(
[ d for d in self.links if d.startswith('/root') ],
[ '/root/a/link', '/root/link' ])
finally:
try:
# Don't propagate another exception.
os.path.isdir = isdir_
os.path.exists = exists_
os.path.islink = islink_
os.makedirs = makedirs_
os.symlink = symlink_
except NameError:
pass
unittest.main()
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