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Viewing changes to bzrlib/tests/test_cache_utf8.py

  • Committer: Jelmer Vernooij
  • Date: 2011-11-30 20:02:16 UTC
  • mto: This revision was merged to the branch mainline in revision 6333.
  • Revision ID: jelmer@samba.org-20111130200216-aoju21pdl20d1gkd
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bzrlib/tests/test_cache_utf8.py
 
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# Copyright (C) 2006 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Tests for utf8 caching."""
 
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from bzrlib import (
 
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    cache_utf8,
 
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    )
 
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from bzrlib.tests import TestCase
 
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class TestEncodeCache(TestCase):
 
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    def setUp(self):
 
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        super(TestEncodeCache, self).setUp()
 
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        cache_utf8.clear_encoding_cache()
 
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        self.addCleanup(cache_utf8.clear_encoding_cache)
 
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    def check_encode(self, rev_id):
 
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        rev_id_utf8 = rev_id.encode('utf-8')
 
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        self.assertFalse(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.assertFalse(rev_id_utf8 in cache_utf8._utf8_to_unicode_map)
 
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        # After a single encode, the mapping should exist for
 
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        # both directions
 
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        self.assertEqual(rev_id_utf8, cache_utf8.encode(rev_id))
 
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        self.assertTrue(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.assertTrue(rev_id_utf8 in cache_utf8._utf8_to_unicode_map)
 
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        self.assertEqual(rev_id, cache_utf8.decode(rev_id_utf8))
 
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        cache_utf8.clear_encoding_cache()
 
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        self.assertFalse(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.assertFalse(rev_id_utf8 in cache_utf8._utf8_to_unicode_map)
 
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    def check_decode(self, rev_id):
 
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        rev_id_utf8 = rev_id.encode('utf-8')
 
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        self.assertFalse(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.assertFalse(rev_id_utf8 in cache_utf8._utf8_to_unicode_map)
 
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        # After a single decode, the mapping should exist for
 
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        # both directions
 
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        self.assertEqual(rev_id, cache_utf8.decode(rev_id_utf8))
 
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        self.assertTrue(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.assertTrue(rev_id_utf8 in cache_utf8._utf8_to_unicode_map)
 
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        self.assertEqual(rev_id_utf8, cache_utf8.encode(rev_id))
 
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        cache_utf8.clear_encoding_cache()
 
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        self.assertFalse(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.assertFalse(rev_id_utf8 in cache_utf8._utf8_to_unicode_map)
 
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    def test_ascii(self):
 
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        self.check_decode(u'all_ascii_characters123123123')
 
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        self.check_encode(u'all_ascii_characters123123123')
 
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    def test_unicode(self):
 
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        self.check_encode(u'some_\xb5_unicode_\xe5_chars')
 
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        self.check_decode(u'some_\xb5_unicode_\xe5_chars')
 
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    def test_cached_unicode(self):
 
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        x = u'\xb5yy' + u'\xe5zz'
 
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        y = u'\xb5yy' + u'\xe5zz'
 
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        self.assertFalse(x is y)
 
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        xp = cache_utf8.get_cached_unicode(x)
 
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        yp = cache_utf8.get_cached_unicode(y)
 
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        self.assertIs(xp, x)
 
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        self.assertIs(xp, yp)
 
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    def test_cached_utf8(self):
 
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        x = u'\xb5yy\xe5zz'.encode('utf8')
 
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        y = u'\xb5yy\xe5zz'.encode('utf8')
 
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        self.assertFalse(x is y)
 
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        xp = cache_utf8.get_cached_utf8(x)
 
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        yp = cache_utf8.get_cached_utf8(y)
 
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        self.assertIs(xp, x)
 
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        self.assertIs(xp, yp)
 
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    def test_cached_ascii(self):
 
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        x = '%s %s' % ('simple', 'text')
 
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        y = '%s %s' % ('simple', 'text')
 
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        self.assertFalse(x is y)
 
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        xp = cache_utf8.get_cached_ascii(x)
 
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        yp = cache_utf8.get_cached_ascii(y)
 
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        self.assertIs(xp, x)
 
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        self.assertIs(xp, yp)
 
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        # after caching, encode and decode should also return the right
 
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        # objects.
 
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        uni_x = cache_utf8.decode(x)
 
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        self.assertEqual(u'simple text', uni_x)
 
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        self.assertIsInstance(uni_x, unicode)
 
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        utf8_x = cache_utf8.encode(uni_x)
 
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        self.assertIs(utf8_x, x)
 
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    def test_decode_with_None(self):
 
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        self.assertEqual(None, cache_utf8._utf8_decode_with_None(None))
 
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        self.assertEqual(u'foo', cache_utf8._utf8_decode_with_None('foo'))
 
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        self.assertEqual(u'f\xb5',
 
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                         cache_utf8._utf8_decode_with_None('f\xc2\xb5'))