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bzrlib/tests/test_diff.py
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        tree.commit('old tree')
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        tree.lock_read()
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        self.addCleanup(tree.unlock)
 
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        basis_tree = tree.basis_tree()
 
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        basis_tree.lock_read()
 
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        self.addCleanup(basis_tree.unlock)
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        diff_obj = DiffFromTool(['python', '-c',
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                                 'print "@old_path @new_path"'],
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                                tree, tree, output)
 
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                                basis_tree, tree, output)
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        diff_obj._prepare_files('file-id', 'file', 'file')
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        self.assertReadableByAttrib(diff_obj._root, 'old\\file', r'old\\file')
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        self.assertReadableByAttrib(diff_obj._root, 'new\\file', r'new\\file')
 
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        # The old content should be readonly
 
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        self.assertReadableByAttrib(diff_obj._root, 'old\\file',
 
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                                    r'R.*old\\file$')
 
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        # The new content should use the tree object, not a 'new' file anymore
 
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        self.assertEndsWith(tree.basedir, 'work/tree')
 
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        self.assertReadableByAttrib(tree.basedir, 'file', r'work\\tree\\file$')
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    def assertReadableByAttrib(self, cwd, relpath, regex):
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        proc = subprocess.Popen(['attrib', relpath],
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                                stdout=subprocess.PIPE,
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                                cwd=cwd)
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        proc.wait()
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        result = proc.stdout.read()
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        self.assertContainsRe(result, regex)
 
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        (result, err) = proc.communicate()
 
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        self.assertContainsRe(result.replace('\r\n', '\n'), regex)
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    def test_prepare_files(self):
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        output = StringIO()
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                                                     'newname')
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        self.assertContainsRe(old_path, 'old/oldname$')
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        self.assertEqual(0, os.stat(old_path).st_mtime)
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        self.assertContainsRe(new_path, 'new/newname$')
 
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        self.assertContainsRe(new_path, 'tree/newname$')
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        self.assertFileEqual('oldcontent', old_path)
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        self.assertFileEqual('newcontent', new_path)
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        if osutils.host_os_dereferences_symlinks():