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# Copyright (C) 2008 Canonical Limited.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation.
#
# 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 St, Fifth Floor, Boston, MA 02110-1301 USA
#
"""Tests for the pyrex extension of groupcompress"""
from bzrlib import tests
from bzrlib.plugins.groupcompress_rabin import groupcompress
class _CompiledGroupCompress(tests.Feature):
def _probe(self):
try:
import bzrlib.plugins.groupcompress_rabin._groupcompress_c
except ImportError:
return False
else:
return True
def feature_name(self):
return 'bzrlib.plugins.groupcompress_rabin._groupcompress_c'
CompiledGroupCompress = _CompiledGroupCompress()
_source_text1 = """\
This is a bit
of source text
which is meant to be matched
against other text
"""
_source_text2 = """\
This is a bit
of source text
which is meant to differ from
against other text
"""
class Test_GroupCompress(tests.TestCase):
"""Direct tests for the compiled extension."""
def setUp(self):
super(Test_GroupCompress, self).setUp()
self.requireFeature(CompiledGroupCompress)
from bzrlib.plugins.groupcompress_rabin import _groupcompress_c
self._gc_module = _groupcompress_c
self.make_delta = _groupcompress_c.make_delta
self.apply_delta = _groupcompress_c.apply_delta
def test_make_delta_is_typesafe(self):
self.make_delta('a string', 'another string')
self.assertRaises(TypeError,
self.make_delta, 'a string', object())
self.assertRaises(TypeError,
self.make_delta, 'a string', u'not a string')
self.assertRaises(TypeError,
self.make_delta, object(), 'a string')
self.assertRaises(TypeError,
self.make_delta, u'not a string', 'a string')
def test_make_noop_delta(self):
ident_delta = self.make_delta(_source_text1, _source_text1)
self.assertEqual('MM\x90M', ident_delta)
ident_delta = self.make_delta(_source_text2, _source_text2)
self.assertEqual('NN\x90N', ident_delta)
def test_make_delta(self):
delta = self.make_delta(_source_text1, _source_text2)
self.assertEqual('MN\x90/\x1fdiffer from\nagainst other text\n', delta)
delta = self.make_delta(_source_text2, _source_text1)
self.assertEqual('NM\x90/\x1ebe matched\nagainst other text\n', delta)
def test_apply_delta_is_typesafe(self):
self.apply_delta(_source_text1, 'MM\x90M')
self.assertRaises(TypeError,
self.apply_delta, object(), 'MM\x90M')
self.assertRaises(TypeError,
self.apply_delta, unicode(_source_text1), 'MM\x90M')
self.assertRaises(TypeError,
self.apply_delta, _source_text1, u'MM\x90M')
self.assertRaises(TypeError,
self.apply_delta, _source_text1, object())
def test_apply_delta(self):
target = self.apply_delta(_source_text1,
'MN\x90/\x1fdiffer from\nagainst other text\n')
self.assertEqual(_source_text2, target)
target = self.apply_delta(_source_text2,
'NM\x90/\x1ebe matched\nagainst other text\n')
self.assertEqual(_source_text1, target)
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