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Viewing changes to bzrlib/tests/test_hashcache.py

  • Committer: Patch Queue Manager
  • Date: 2016-02-01 19:13:13 UTC
  • mfrom: (6614.2.2 trunk)
  • Revision ID: pqm@pqm.ubuntu.com-20160201191313-wdfvmfff1djde6oq
(vila) Release 2.7.0 (Vincent Ladeuil)

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bzrlib/tests/test_hashcache.py
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# Copyright (C) 2005-2009, 2011 Canonical Ltd
 
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# Copyright (C) 2005-2011, 2016 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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        """Get correct hash from an empty hashcache"""
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        hc = self.make_hashcache()
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        self.build_tree_contents([('foo', 'hello')])
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        self.assertEquals(hc.get_sha1('foo'),
 
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        self.assertEqual(hc.get_sha1('foo'),
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                          'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d')
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        self.assertEquals(hc.miss_count, 1)
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        self.assertEquals(hc.hit_count, 0)
 
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        self.assertEqual(hc.miss_count, 1)
 
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        self.assertEqual(hc.hit_count, 0)
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    def test_hashcache_new_file(self):
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        hc = self.make_hashcache()
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        self.build_tree_contents([('foo', 'goodbye')])
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        # now read without pausing; it may not be possible to cache it as its
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        # so new
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        self.assertEquals(hc.get_sha1('foo'), sha1('goodbye'))
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('goodbye'))
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    def test_hashcache_nonexistent_file(self):
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        hc = self.make_hashcache()
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        self.assertEquals(hc.get_sha1('no-name-yet'), None)
 
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        self.assertEqual(hc.get_sha1('no-name-yet'), None)
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    def test_hashcache_replaced_file(self):
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        hc = self.make_hashcache()
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        self.build_tree_contents([('foo', 'goodbye')])
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        self.assertEquals(hc.get_sha1('foo'), sha1('goodbye'))
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('goodbye'))
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        os.remove('foo')
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        self.assertEquals(hc.get_sha1('foo'), None)
 
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        self.assertEqual(hc.get_sha1('foo'), None)
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        self.build_tree_contents([('foo', 'new content')])
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        self.assertEquals(hc.get_sha1('foo'), sha1('new content'))
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('new content'))
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    def test_hashcache_not_file(self):
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        hc = self.make_hashcache()
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        self.build_tree(['subdir/'])
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        self.assertEquals(hc.get_sha1('subdir'), None)
 
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        self.assertEqual(hc.get_sha1('subdir'), None)
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    def test_hashcache_load(self):
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        hc = self.make_hashcache()
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        self.build_tree_contents([('foo', 'contents')])
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        pause()
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        self.assertEquals(hc.get_sha1('foo'), sha1('contents'))
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('contents'))
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        hc.write()
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        hc = self.reopen_hashcache()
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        self.assertEquals(hc.get_sha1('foo'), sha1('contents'))
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        self.assertEquals(hc.hit_count, 1)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('contents'))
 
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        self.assertEqual(hc.hit_count, 1)
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    def test_hammer_hashcache(self):
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        hc = self.make_hashcache()
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            self.log("iteration %d: %r -> %r",
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                     i, last_content, last_sha1)
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            got_sha1 = hc.get_sha1('foo')
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            self.assertEquals(got_sha1, last_sha1)
 
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            self.assertEqual(got_sha1, last_sha1)
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            hc.write()
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            hc = self.reopen_hashcache()
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        """A new file gives the right sha1 but misses"""
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        hc = self.make_hashcache()
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        hc.put_file('foo', 'hello')
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        self.assertEquals(hc.get_sha1('foo'), sha1('hello'))
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        self.assertEquals(hc.miss_count, 1)
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        self.assertEquals(hc.hit_count, 0)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('hello'))
 
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        self.assertEqual(hc.miss_count, 1)
 
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        self.assertEqual(hc.hit_count, 0)
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        # if we try again it's still too new;
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        self.assertEquals(hc.get_sha1('foo'), sha1('hello'))
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        self.assertEquals(hc.miss_count, 2)
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        self.assertEquals(hc.hit_count, 0)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('hello'))
 
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        self.assertEqual(hc.miss_count, 2)
 
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        self.assertEqual(hc.hit_count, 0)
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    def test_hashcache_old_file(self):
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        """An old file gives the right sha1 and hits"""
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        hc.put_file('foo', 'hello')
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        hc.pretend_to_sleep(20)
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        # file is new; should get the correct hash but miss
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        self.assertEquals(hc.get_sha1('foo'), sha1('hello'))
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        self.assertEquals(hc.miss_count, 1)
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        self.assertEquals(hc.hit_count, 0)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('hello'))
 
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        self.assertEqual(hc.miss_count, 1)
 
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        self.assertEqual(hc.hit_count, 0)
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        # and can now be hit
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        self.assertEquals(hc.get_sha1('foo'), sha1('hello'))
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        self.assertEquals(hc.miss_count, 1)
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        self.assertEquals(hc.hit_count, 1)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('hello'))
 
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        self.assertEqual(hc.miss_count, 1)
 
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        self.assertEqual(hc.hit_count, 1)
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        hc.pretend_to_sleep(3)
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        # and again
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        self.assertEquals(hc.get_sha1('foo'), sha1('hello'))
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        self.assertEquals(hc.miss_count, 1)
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        self.assertEquals(hc.hit_count, 2)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('hello'))
 
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        self.assertEqual(hc.miss_count, 1)
 
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        self.assertEqual(hc.hit_count, 2)
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    def test_hashcache_invalidates(self):
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        hc = self.make_hashcache()
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        hc.pretend_to_sleep(20)
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        hc.get_sha1('foo')
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        hc.put_file('foo', 'h1llo')
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        self.assertEquals(hc.get_sha1('foo'), sha1('h1llo'))
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        self.assertEquals(hc.miss_count, 2)
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        self.assertEquals(hc.hit_count, 0)
 
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        self.assertEqual(hc.get_sha1('foo'), sha1('h1llo'))
 
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        self.assertEqual(hc.miss_count, 2)
 
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        self.assertEqual(hc.hit_count, 0)