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Viewing changes to bzrlib/selftest/testhashcache.py

  • Committer: Martin Pool
  • Date: 2005-07-08 02:28:58 UTC
  • Revision ID: mbp@sourcefrog.net-20050708022858-f8323aaea09ea4f2
- more hash-cache tests

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bzrlib/selftest/testhashcache.py
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class TestHashCache(InTempDir):
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    """Functional tests for hashcache"""
 
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    """Functional tests for statcache"""
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    def runTest(self):
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        from bzrlib.hashcache import HashCache
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        import os
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        import time
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        # make a dummy bzr directory just to hold the cache
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        os.mkdir('.bzr')
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        hc = HashCache('.')
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        file('foo', 'wb').write('hello')
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        file('foo', 'wb').write('g00dbye')
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        self.assertEquals(hc.get_sha1('foo'),
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                          sha1('g00dbye'))
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        file('foo2', 'wb').write('other file')
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        self.assertEquals(hc.get_sha1('foo2'), sha1('other file'))
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        os.remove('foo2')
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        self.assertEquals(hc.get_sha1('foo2'), None)
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        file('foo2', 'wb').write('new content')
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        self.assertEquals(hc.get_sha1('foo2'), sha1('new content'))
 
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        # this is not quite guaranteed to be true; we might have
 
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        # crossed a 1s boundary before
 
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        self.assertEquals(hc.danger_count, 1)
 
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        self.assertEquals(len(hc._cache), 0)
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        self.assertEquals(hc.get_sha1('subdir'), None)
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        # it's likely neither are cached at the moment because they 
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        # changed recently, but we can't be sure
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        pause()
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        # should now be safe to cache it if we reread them
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        self.assertEquals(hc.get_sha1('foo'), sha1('g00dbye'))
 
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        # should now be safe to cache it
 
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        self.assertEquals(hc.get_sha1('foo'),
 
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                          sha1('g00dbye'))
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        self.assertEquals(len(hc._cache), 1)
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        self.assertEquals(hc.get_sha1('foo2'), sha1('new content'))
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        self.assertEquals(len(hc._cache), 2)
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        # write out, read back in and check that we don't need to
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        # re-read any files
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        hc.write()
 
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        hc.write('stat-cache')
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        del hc
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        hc = HashCache('.')
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        hc.read()
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        self.assertEquals(len(hc._cache), 2)
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        self.assertEquals(hc.get_sha1('foo'), sha1('g00dbye'))
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        self.assertEquals(hc.hit_count, 1)
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        self.assertEquals(hc.miss_count, 0)
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        self.assertEquals(hc.get_sha1('foo2'), sha1('new content'))
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        # hc.read('stat-cache')
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