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Viewing changes to breezy/tests/test_patch.py

  • Committer: Jelmer Vernooij
  • Date: 2020-04-05 19:11:34 UTC
  • mto: (7490.7.16 work)
  • mto: This revision was merged to the branch mainline in revision 7501.
  • Revision ID: jelmer@jelmer.uk-20200405191134-0aebh8ikiwygxma5
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breezy/tests/test_patch.py
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# Copyright (C) 2006 Canonical Ltd
 
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# Copyright (C) 2008 Aaron Bentley <aaron@aaronbentley.com>
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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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# 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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from bzrlib.errors import BinaryFile
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from bzrlib.patch import diff3
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from bzrlib.tests import TestCaseInTempDir
 
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import os
 
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from breezy.iterablefile import IterableFile
 
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from breezy.errors import BinaryFile
 
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from breezy.patch import diff3, PatchInvokeError, run_patch, iter_patched_from_hunks
 
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from breezy.patches import parse_patch
 
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from breezy.tests import TestCaseInTempDir, TestCase
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class TestPatch(TestCaseInTempDir):
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    def test_diff3_binaries(self):
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        file('this', 'wb').write('a')
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        file('other', 'wb').write('a')
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        file('base', 'wb').write('\x00')
 
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        with open('this', 'wb') as f:
 
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            f.write(b'a')
 
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        with open('other', 'wb') as f:
 
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            f.write(b'a')
 
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        with open('base', 'wb') as f:
 
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            f.write(b'\x00')
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        self.assertRaises(BinaryFile, diff3, 'unused', 'this', 'other', 'base')
 
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class TestPatch(TestCaseInTempDir):
 
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    def test_missing_patch(self):
 
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        self.assertRaises(PatchInvokeError, run_patch, '.', [],
 
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                          _patch_cmd='/unlikely/to/exist')
 
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class PatchesTester(TestCase):
 
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    def datafile(self, filename):
 
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        data_path = os.path.join(os.path.dirname(__file__),
 
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                                 "test_patches_data", filename)
 
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        return open(data_path, "rb")
 
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    def data_lines(self, filename):
 
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        with self.datafile(filename) as datafile:
 
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            return datafile.readlines()
 
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    def test_iter_patched_from_hunks(self):
 
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        """Test a few patch files, and make sure they work."""
 
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        files = [
 
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            ('diff-2', 'orig-2', 'mod-2'),
 
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            ('diff-3', 'orig-3', 'mod-3'),
 
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            ('diff-4', 'orig-4', 'mod-4'),
 
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            ('diff-5', 'orig-5', 'mod-5'),
 
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            ('diff-6', 'orig-6', 'mod-6'),
 
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            ('diff-7', 'orig-7', 'mod-7'),
 
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        ]
 
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        for diff, orig, mod in files:
 
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            parsed = parse_patch(self.datafile(diff))
 
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            orig_lines = list(self.datafile(orig))
 
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            mod_lines = list(self.datafile(mod))
 
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            iter_patched = iter_patched_from_hunks(orig_lines, parsed.hunks)
 
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            patched_file = IterableFile(iter_patched)
 
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            count = 0
 
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            for patch_line in patched_file:
 
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                self.assertEqual(patch_line, mod_lines[count], 'for file %s' % diff)
 
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                count += 1
 
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            self.assertEqual(count, len(mod_lines))