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# Copyright (C) 2007 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from unittest import TestCase
from bzrlib import (
knit,
multiparent,
patiencediff,
tests,
)
LINES_1 = "a\nb\nc\nd\ne\n".splitlines(True)
LINES_2 = "a\nc\nd\ne\n".splitlines(True)
LINES_3 = "a\nb\nc\nd\n".splitlines(True)
LF_SPLIT_LINES = ['\x00\n', '\x00\r\x01\n', '\x02\r\xff']
class Mock(object):
def __init__(self, **kwargs):
self.__dict__ = kwargs
class TestMulti(TestCase):
def test_compare_no_parent(self):
diff = multiparent.MultiParent.from_lines(LINES_1)
self.assertEqual([multiparent.NewText(LINES_1)], diff.hunks)
def test_compare_one_parent(self):
diff = multiparent.MultiParent.from_lines(LINES_1, [LINES_2])
self.assertEqual([multiparent.ParentText(0, 0, 0, 1),
multiparent.NewText(['b\n']),
multiparent.ParentText(0, 1, 2, 3)],
diff.hunks)
diff = multiparent.MultiParent.from_lines(LINES_2, [LINES_1])
self.assertEqual([multiparent.ParentText(0, 0, 0, 1),
multiparent.ParentText(0, 2, 1, 3)],
diff.hunks)
def test_compare_two_parents(self):
diff = multiparent.MultiParent.from_lines(LINES_1, [LINES_2, LINES_3])
self.assertEqual([multiparent.ParentText(1, 0, 0, 4),
multiparent.ParentText(0, 3, 4, 1)],
diff.hunks)
def test_compare_two_parents_blocks(self):
matcher = patiencediff.PatienceSequenceMatcher(None, LINES_2, LINES_1)
blocks = matcher.get_matching_blocks()
diff = multiparent.MultiParent.from_lines(LINES_1, [LINES_2, LINES_3],
left_blocks=blocks)
self.assertEqual([multiparent.ParentText(1, 0, 0, 4),
multiparent.ParentText(0, 3, 4, 1)],
diff.hunks)
def test_get_matching_blocks(self):
diff = multiparent.MultiParent.from_lines(LINES_1, [LINES_2])
self.assertEqual([(0, 0, 1), (1, 2, 3), (4, 5, 0)],
list(diff.get_matching_blocks(0, len(LINES_2))))
diff = multiparent.MultiParent.from_lines(LINES_2, [LINES_1])
self.assertEqual([(0, 0, 1), (2, 1, 3), (5, 4, 0)],
list(diff.get_matching_blocks(0, len(LINES_1))))
def test_range_iterator(self):
diff = multiparent.MultiParent.from_lines(LINES_1, [LINES_2, LINES_3])
diff.hunks.append(multiparent.NewText(['q\n']))
self.assertEqual([(0, 4, 'parent', (1, 0, 4)),
(4, 5, 'parent', (0, 3, 4)),
(5, 6, 'new', ['q\n'])],
list(diff.range_iterator()))
def test_eq(self):
diff = multiparent.MultiParent.from_lines(LINES_1)
diff2 = multiparent.MultiParent.from_lines(LINES_1)
self.assertEqual(diff, diff2)
diff3 = multiparent.MultiParent.from_lines(LINES_2)
self.assertFalse(diff == diff3)
self.assertFalse(diff == Mock(hunks=[multiparent.NewText(LINES_1)]))
self.assertEqual(multiparent.MultiParent(
[multiparent.NewText(LINES_1),
multiparent.ParentText(0, 1, 2, 3)]),
multiparent.MultiParent(
[multiparent.NewText(LINES_1),
multiparent.ParentText(0, 1, 2, 3)]))
def test_to_patch(self):
self.assertEqual(['i 1\n', 'a\n', '\n', 'c 0 1 2 3\n'],
list(multiparent.MultiParent([multiparent.NewText(['a\n']),
multiparent.ParentText(0, 1, 2, 3)]).to_patch()))
def test_from_patch(self):
self.assertEqual(multiparent.MultiParent(
[multiparent.NewText(['a\n']),
multiparent.ParentText(0, 1, 2, 3)]),
multiparent.MultiParent.from_patch('i 1\na\n\nc 0 1 2 3'))
self.assertEqual(multiparent.MultiParent(
[multiparent.NewText(['a']),
multiparent.ParentText(0, 1, 2, 3)]),
multiparent.MultiParent.from_patch('i 1\na\nc 0 1 2 3\n'))
def test_binary_content(self):
patch = list(
multiparent.MultiParent.from_lines(LF_SPLIT_LINES).to_patch())
multiparent.MultiParent.from_patch(''.join(patch))
def test_make_patch_from_binary(self):
patch = multiparent.MultiParent.from_texts(''.join(LF_SPLIT_LINES))
expected = multiparent.MultiParent([
multiparent.NewText(LF_SPLIT_LINES)])
self.assertEqual(expected, patch)
def test_num_lines(self):
mp = multiparent.MultiParent([multiparent.NewText(['a\n'])])
self.assertEqual(1, mp.num_lines())
mp.hunks.append(multiparent.NewText(['b\n', 'c\n']))
self.assertEqual(3, mp.num_lines())
mp.hunks.append(multiparent.ParentText(0, 0, 3, 2))
self.assertEqual(5, mp.num_lines())
mp.hunks.append(multiparent.NewText(['f\n', 'g\n']))
self.assertEqual(7, mp.num_lines())
def test_to_lines(self):
mpdiff = multiparent.MultiParent.from_texts('a\nb\nc\n', ('b\nc\n',))
lines = mpdiff.to_lines(('b\ne\n',))
self.assertEqual(['a\n', 'b\n', 'e\n'], lines)
class TestNewText(TestCase):
def test_eq(self):
self.assertEqual(multiparent.NewText([]), multiparent.NewText([]))
self.assertFalse(multiparent.NewText(['a']) ==
multiparent.NewText(['b']))
self.assertFalse(multiparent.NewText(['a']) == Mock(lines=['a']))
def test_to_patch(self):
self.assertEqual(['i 0\n', '\n'],
list(multiparent.NewText([]).to_patch()))
self.assertEqual(['i 1\n', 'a', '\n'],
list(multiparent.NewText(['a']).to_patch()))
self.assertEqual(['i 1\n', 'a\n', '\n'],
list(multiparent.NewText(['a\n']).to_patch()))
class TestParentText(TestCase):
def test_eq(self):
self.assertEqual(multiparent.ParentText(1, 2, 3, 4),
multiparent.ParentText(1, 2, 3, 4))
self.assertFalse(multiparent.ParentText(1, 2, 3, 4) ==
multiparent.ParentText(2, 2, 3, 4))
self.assertFalse(multiparent.ParentText(1, 2, 3, 4) ==
Mock(parent=1, parent_pos=2, child_pos=3,
num_lines=4))
def test_to_patch(self):
self.assertEqual(['c 0 1 2 3\n'],
list(multiparent.ParentText(0, 1, 2, 3).to_patch()))
REV_A = ['a\n', 'b\n', 'c\n', 'd\n']
REV_B = ['a\n', 'c\n', 'd\n', 'e\n']
REV_C = ['a\n', 'b\n', 'e\n', 'f\n']
class TestVersionedFile(TestCase):
def add_version(self, vf, text, version_id, parent_ids):
vf.add_version([(t+'\n') for t in text], version_id, parent_ids)
def make_vf(self):
vf = multiparent.MultiMemoryVersionedFile()
self.add_version(vf, 'abcd', 'rev-a', [])
self.add_version(vf, 'acde', 'rev-b', [])
self.add_version(vf, 'abef', 'rev-c', ['rev-a', 'rev-b'])
return vf
def test_add_version(self):
vf = self.make_vf()
self.assertEqual(REV_A, vf._lines['rev-a'])
vf.clear_cache()
self.assertEqual(vf._lines, {})
def test_get_line_list(self):
vf = self.make_vf()
vf.clear_cache()
self.assertEqual(REV_A, vf.get_line_list(['rev-a'])[0])
self.assertEqual([REV_B, REV_C], vf.get_line_list(['rev-b', 'rev-c']))
def test_reconstruct_empty(self):
vf = multiparent.MultiMemoryVersionedFile()
vf.add_version([], 'a', [])
self.assertEqual([], self.reconstruct_version(vf, 'a'))
@staticmethod
def reconstruct(vf, revision_id, start, end):
reconstructor = multiparent._Reconstructor(vf, vf._lines,
vf._parents)
lines = []
reconstructor._reconstruct(lines, revision_id, start, end)
return lines
@staticmethod
def reconstruct_version(vf, revision_id):
reconstructor = multiparent._Reconstructor(vf, vf._lines,
vf._parents)
lines = []
reconstructor.reconstruct_version(lines, revision_id)
return lines
def test_reconstructor(self):
vf = self.make_vf()
self.assertEqual(['a\n', 'b\n'], self.reconstruct(vf, 'rev-a', 0, 2))
self.assertEqual(['c\n', 'd\n'], self.reconstruct(vf, 'rev-a', 2, 4))
self.assertEqual(['e\n', 'f\n'], self.reconstruct(vf, 'rev-c', 2, 4))
self.assertEqual(['a\n', 'b\n', 'e\n', 'f\n'],
self.reconstruct(vf, 'rev-c', 0, 4))
self.assertEqual(['a\n', 'b\n', 'e\n', 'f\n'],
self.reconstruct_version(vf, 'rev-c'))
def test_reordered(self):
"""Check for a corner case that requires re-starting the cursor"""
vf = multiparent.MultiMemoryVersionedFile()
# rev-b must have at least two hunks, so split a and b with c.
self.add_version(vf, 'c', 'rev-a', [])
self.add_version(vf, 'acb', 'rev-b', ['rev-a'])
# rev-c and rev-d must each have a line from a different rev-b hunk
self.add_version(vf, 'b', 'rev-c', ['rev-b'])
self.add_version(vf, 'a', 'rev-d', ['rev-b'])
# The lines from rev-c and rev-d must appear in the opposite order
self.add_version(vf, 'ba', 'rev-e', ['rev-c', 'rev-d'])
vf.clear_cache()
lines = vf.get_line_list(['rev-e'])[0]
self.assertEqual(['b\n', 'a\n'], lines)
class TestMultiVersionedFile(tests.TestCaseInTempDir):
def test_save_load(self):
vf = multiparent.MultiVersionedFile('foop')
vf.add_version('a\nb\nc\nd'.splitlines(True), 'a', [])
vf.add_version('a\ne\nd\n'.splitlines(True), 'b', ['a'])
vf.save()
newvf = multiparent.MultiVersionedFile('foop')
newvf.load()
self.assertEqual('a\nb\nc\nd', ''.join(newvf.get_line_list(['a'])[0]))
self.assertEqual('a\ne\nd\n', ''.join(newvf.get_line_list(['b'])[0]))
def test_filenames(self):
vf = multiparent.MultiVersionedFile('foop')
vf.add_version('a\nb\nc\nd'.splitlines(True), 'a', [])
self.failUnlessExists('foop.mpknit')
self.failIfExists('foop.mpidx')
vf.save()
self.failUnlessExists('foop.mpidx')
vf.destroy()
self.failIfExists('foop.mpknit')
self.failIfExists('foop.mpidx')
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