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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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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.failIf(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.failIf(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.failUnless(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.failUnless(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.failIf(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.failIf(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.failIf(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.failIf(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.failUnless(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.failUnless(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.failIf(rev_id in cache_utf8._unicode_to_utf8_map)
 
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        self.failIf(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.failIf(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.failUnless(xp is x)
 
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        self.failUnless(xp is yp)
 
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