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Viewing changes to bzrlib/tests/test_rename_map.py

  • Committer: Vincent Ladeuil
  • Date: 2011-12-21 14:25:26 UTC
  • mto: This revision was merged to the branch mainline in revision 6397.
  • Revision ID: v.ladeuil+lp@free.fr-20111221142526-pnwau0xnalimujts
Provides MemoryStack to simplify configuration setup in tests

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bzrlib/tests/test_rename_map.py
 
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# Copyright (C) 2009 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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import os
 
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from bzrlib import trace
 
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from bzrlib.rename_map import RenameMap
 
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from bzrlib.tests import TestCaseWithTransport
 
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def myhash(val):
 
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    """This the hash used by RenameMap."""
 
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    return hash(val) % (1024 * 1024 * 10)
 
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class TestRenameMap(TestCaseWithTransport):
 
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    a_lines = 'a\nb\nc\n'.splitlines(True)
 
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    b_lines = 'b\nc\nd\n'.splitlines(True)
 
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    def test_add_edge_hashes(self):
 
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        rn = RenameMap(None)
 
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        rn.add_edge_hashes(self.a_lines, 'a')
 
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        self.assertEqual(set(['a']), rn.edge_hashes[myhash(('a\n', 'b\n'))])
 
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        self.assertEqual(set(['a']), rn.edge_hashes[myhash(('b\n', 'c\n'))])
 
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        self.assertIs(None, rn.edge_hashes.get(myhash(('c\n', 'd\n'))))
 
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    def test_add_file_edge_hashes(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        self.build_tree_contents([('tree/a', ''.join(self.a_lines))])
 
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        tree.add('a', 'a')
 
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        rn = RenameMap(tree)
 
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        rn.add_file_edge_hashes(tree, ['a'])
 
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        self.assertEqual(set(['a']), rn.edge_hashes[myhash(('a\n', 'b\n'))])
 
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        self.assertEqual(set(['a']), rn.edge_hashes[myhash(('b\n', 'c\n'))])
 
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        self.assertIs(None, rn.edge_hashes.get(myhash(('c\n', 'd\n'))))
 
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    def test_hitcounts(self):
 
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        rn = RenameMap(None)
 
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        rn.add_edge_hashes(self.a_lines, 'a')
 
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        rn.add_edge_hashes(self.b_lines, 'b')
 
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        self.assertEqual({'a': 2.5, 'b': 0.5}, rn.hitcounts(self.a_lines))
 
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        self.assertEqual({'a': 1}, rn.hitcounts(self.a_lines[:-1]))
 
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        self.assertEqual({'b': 2.5, 'a': 0.5}, rn.hitcounts(self.b_lines))
 
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    def test_file_match(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        rn = RenameMap(tree)
 
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        rn.add_edge_hashes(self.a_lines, 'aid')
 
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        rn.add_edge_hashes(self.b_lines, 'bid')
 
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        self.build_tree_contents([('tree/a', ''.join(self.a_lines))])
 
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        self.build_tree_contents([('tree/b', ''.join(self.b_lines))])
 
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        self.assertEqual({'a': 'aid', 'b': 'bid'},
 
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                         rn.file_match(['a', 'b']))
 
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    def test_file_match_no_dups(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        rn = RenameMap(tree)
 
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        rn.add_edge_hashes(self.a_lines, 'aid')
 
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        self.build_tree_contents([('tree/a', ''.join(self.a_lines))])
 
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        self.build_tree_contents([('tree/b', ''.join(self.b_lines))])
 
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        self.build_tree_contents([('tree/c', ''.join(self.b_lines))])
 
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        self.assertEqual({'a': 'aid'},
 
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                         rn.file_match(['a', 'b', 'c']))
 
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    def test_match_directories(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        rn = RenameMap(tree)
 
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        required_parents = rn.get_required_parents({
 
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            'path1': 'a',
 
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            'path2/tr': 'b',
 
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            'path3/path4/path5': 'c',
 
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        })
 
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        self.assertEqual(
 
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            {'path2': set(['b']), 'path3/path4': set(['c']), 'path3': set()},
 
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            required_parents)
 
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    def test_find_directory_renames(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        rn = RenameMap(tree)
 
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        matches = {
 
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            'path1': 'a',
 
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            'path3/path4/path5': 'c',
 
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        }
 
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        required_parents = {
 
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            'path2': set(['b']),
 
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            'path3/path4': set(['c']),
 
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            'path3': set([])}
 
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        missing_parents = {
 
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            'path2-id': set(['b']),
 
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            'path4-id': set(['c']),
 
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            'path3-id': set(['path4-id'])}
 
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        matches = rn.match_parents(required_parents, missing_parents)
 
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        self.assertEqual({'path3/path4': 'path4-id', 'path2': 'path2-id'},
 
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                         matches)
 
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    def test_guess_renames(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        tree.lock_write()
 
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        self.addCleanup(tree.unlock)
 
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        self.build_tree(['tree/file'])
 
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        tree.add('file', 'file-id')
 
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        tree.commit('Added file')
 
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        os.rename('tree/file', 'tree/file2')
 
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        RenameMap.guess_renames(tree)
 
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        self.assertEqual('file2', tree.id2path('file-id'))
 
122
 
 
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    def test_guess_renames_handles_directories(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        tree.lock_write()
 
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        self.addCleanup(tree.unlock)
 
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        self.build_tree(['tree/dir/', 'tree/dir/file'])
 
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        tree.add(['dir', 'dir/file'], ['dir-id', 'file-id'])
 
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        tree.commit('Added file')
 
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        os.rename('tree/dir', 'tree/dir2')
 
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        RenameMap.guess_renames(tree)
 
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        self.assertEqual('dir2/file', tree.id2path('file-id'))
 
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        self.assertEqual('dir2', tree.id2path('dir-id'))
 
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    def test_guess_renames_handles_grandparent_directories(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        tree.lock_write()
 
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        self.addCleanup(tree.unlock)
 
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        self.build_tree(['tree/topdir/',
 
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                         'tree/topdir/middledir/',
 
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                         'tree/topdir/middledir/file'])
 
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        tree.add(['topdir', 'topdir/middledir', 'topdir/middledir/file'],
 
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                 ['topdir-id', 'middledir-id', 'file-id'])
 
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        tree.commit('Added files.')
 
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        os.rename('tree/topdir', 'tree/topdir2')
 
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        RenameMap.guess_renames(tree)
 
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        self.assertEqual('topdir2', tree.id2path('topdir-id'))
 
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    def test_guess_renames_preserves_children(self):
 
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        """When a directory has been moved, its children are preserved."""
 
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        tree = self.make_branch_and_tree('tree')
 
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        tree.lock_write()
 
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        self.addCleanup(tree.unlock)
 
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        self.build_tree_contents([('tree/foo/', ''),
 
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                                  ('tree/foo/bar', 'bar'),
 
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                                  ('tree/foo/empty', '')])
 
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        tree.add(['foo', 'foo/bar', 'foo/empty'],
 
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                 ['foo-id', 'bar-id', 'empty-id'])
 
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        tree.commit('rev1')
 
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        os.rename('tree/foo', 'tree/baz')
 
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        RenameMap.guess_renames(tree)
 
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        self.assertEqual('baz/empty', tree.id2path('empty-id'))
 
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    def test_guess_renames_dry_run(self):
 
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        tree = self.make_branch_and_tree('tree')
 
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        tree.lock_write()
 
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        self.addCleanup(tree.unlock)
 
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        self.build_tree(['tree/file'])
 
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        tree.add('file', 'file-id')
 
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        tree.commit('Added file')
 
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        os.rename('tree/file', 'tree/file2')
 
172
        RenameMap.guess_renames(tree, dry_run=True)
 
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        self.assertEqual('file', tree.id2path('file-id'))
 
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175
    @staticmethod
 
176
    def captureNotes(cmd, *args, **kwargs):
 
177
        notes = []
 
178
        def my_note(fmt, *args):
 
179
            notes.append(fmt % args)
 
180
        old_note = trace.note
 
181
        trace.note = my_note
 
182
        try:
 
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            result = cmd(*args, **kwargs)
 
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        finally:
 
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            trace.note = old_note
 
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        return notes, result
 
187
 
 
188
    def test_guess_renames_output(self):
 
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        """guess_renames emits output whether dry_run is True or False."""
 
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        tree = self.make_branch_and_tree('tree')
 
191
        tree.lock_write()
 
192
        self.addCleanup(tree.unlock)
 
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        self.build_tree(['tree/file'])
 
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        tree.add('file', 'file-id')
 
195
        tree.commit('Added file')
 
196
        os.rename('tree/file', 'tree/file2')
 
197
        notes = self.captureNotes(RenameMap.guess_renames, tree,
 
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                                  dry_run=True)[0]
 
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        self.assertEqual('file => file2', ''.join(notes))
 
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        notes = self.captureNotes(RenameMap.guess_renames, tree,
 
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                                  dry_run=False)[0]
 
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        self.assertEqual('file => file2', ''.join(notes))