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# (C) 2005 Canonical Ltd
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tests for the Branch facility that are not interface tests.
For interface tests see tests/branch_implementations/*.py.
For concrete class tests see this file, and for meta-branch tests
also see this file.
"""
from StringIO import StringIO
import bzrlib.branch as branch
import bzrlib.bzrdir as bzrdir
from bzrlib.errors import (NotBranchError,
UnknownFormatError,
UnsupportedFormatError,
)
from bzrlib.tests import TestCase, TestCaseWithTransport
from bzrlib.transport import get_transport
class TestDefaultFormat(TestCase):
def test_get_set_default_format(self):
old_format = branch.BranchFormat.get_default_format()
# default is 5
self.assertTrue(isinstance(old_format, branch.BzrBranchFormat5))
branch.BranchFormat.set_default_format(SampleBranchFormat())
try:
# the default branch format is used by the meta dir format
# which is not the default bzrdir format at this point
dir = bzrdir.BzrDirMetaFormat1().initialize('memory:/')
result = dir.create_branch()
self.assertEqual(result, 'A branch')
finally:
branch.BranchFormat.set_default_format(old_format)
self.assertEqual(old_format, branch.BranchFormat.get_default_format())
class SampleBranchFormat(branch.BranchFormat):
"""A sample format
this format is initializable, unsupported to aid in testing the
open and open_downlevel routines.
"""
def get_format_string(self):
"""See BzrBranchFormat.get_format_string()."""
return "Sample branch format."
def initialize(self, a_bzrdir):
"""Format 4 branches cannot be created."""
t = a_bzrdir.get_branch_transport(self)
t.put('format', StringIO(self.get_format_string()))
return 'A branch'
def is_supported(self):
return False
def open(self, transport, _found=False):
return "opened branch."
class TestBzrBranchFormat(TestCaseWithTransport):
"""Tests for the BzrBranchFormat facility."""
def test_find_format(self):
# is the right format object found for a branch?
# create a branch with a few known format objects.
# this is not quite the same as
self.build_tree(["foo/", "bar/"])
def check_format(format, url):
dir = format._matchingbzrdir.initialize(url)
format.initialize(dir)
t = get_transport(url)
found_format = branch.BranchFormat.find_format(dir)
self.failUnless(isinstance(found_format, format.__class__))
check_format(branch.BzrBranchFormat5(), "bar")
def test_find_format_not_branch(self):
dir = bzrdir.BzrDirMetaFormat1().initialize(self.get_url())
self.assertRaises(NotBranchError,
branch.BranchFormat.find_format,
dir)
def test_find_format_unknown_format(self):
dir = bzrdir.BzrDirMetaFormat1().initialize(self.get_url())
SampleBranchFormat().initialize(dir)
self.assertRaises(UnknownFormatError,
branch.BranchFormat.find_format,
dir)
def test_register_unregister_format(self):
format = SampleBranchFormat()
# make a control dir
dir = bzrdir.BzrDirMetaFormat1().initialize(self.get_url())
# make a branch
format.initialize(dir)
# register a format for it.
branch.BranchFormat.register_format(format)
# which branch.Open will refuse (not supported)
self.assertRaises(UnsupportedFormatError, branch.Branch.open, self.get_url())
# but open_downlevel will work
self.assertEqual(format.open(dir), branch.Branch.open_downlevel(self.get_url()))
# unregister the format
branch.BranchFormat.unregister_format(format)
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