1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
|
# Copyright (C) 2005 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
import warnings
from bzrlib import (
revision,
)
from bzrlib.branch import Branch
from bzrlib.errors import NoSuchRevision
from bzrlib.graph import Graph
from bzrlib.revision import (find_present_ancestors, combined_graph,
common_ancestor,
is_ancestor, MultipleRevisionSources,
NULL_REVISION)
from bzrlib.tests import TestCase, TestCaseWithTransport
from bzrlib.trace import mutter
from bzrlib.workingtree import WorkingTree
# We're allowed to test deprecated interfaces
warnings.filterwarnings('ignore',
'.*get_intervening_revisions was deprecated',
DeprecationWarning,
r'bzrlib\.tests\.test_revision')
# XXX: Make this a method of a merge base case
def make_branches(self):
"""Create two branches
branch 1 has 6 commits, branch 2 has 3 commits
commit 10 is a ghosted merge merge from branch 1
the object graph is
B: A:
a..0 a..0
a..1 a..1
a..2 a..2
b..3 a..3 merges b..4
b..4 a..4
b..5 a..5 merges b..5
b..6 merges a4
so A is missing b6 at the start
and B is missing a3, a4, a5
"""
tree1 = self.make_branch_and_tree("branch1")
br1 = tree1.branch
tree1.commit("Commit one", rev_id="a@u-0-0")
tree1.commit("Commit two", rev_id="a@u-0-1")
tree1.commit("Commit three", rev_id="a@u-0-2")
tree2 = tree1.bzrdir.clone("branch2").open_workingtree()
br2 = tree2.branch
tree2.commit("Commit four", rev_id="b@u-0-3")
tree2.commit("Commit five", rev_id="b@u-0-4")
revisions_2 = br2.revision_history()
self.assertEquals(revisions_2[-1], 'b@u-0-4')
tree1.merge_from_branch(br2)
tree1.commit("Commit six", rev_id="a@u-0-3")
tree1.commit("Commit seven", rev_id="a@u-0-4")
tree2.commit("Commit eight", rev_id="b@u-0-5")
self.assertEquals(br2.revision_history()[-1], 'b@u-0-5')
tree1.merge_from_branch(br2)
tree1.commit("Commit nine", rev_id="a@u-0-5")
# DO NOT MERGE HERE - we WANT a GHOST.
tree2.add_parent_tree_id(br1.revision_history()[4])
tree2.commit("Commit ten - ghost merge", rev_id="b@u-0-6")
return br1, br2
class TestIsAncestor(TestCaseWithTransport):
def test_recorded_ancestry(self):
"""Test that commit records all ancestors"""
br1, br2 = make_branches(self)
d = [('a@u-0-0', ['a@u-0-0']),
('a@u-0-1', ['a@u-0-0', 'a@u-0-1']),
('a@u-0-2', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2']),
('b@u-0-3', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2', 'b@u-0-3']),
('b@u-0-4', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2', 'b@u-0-3',
'b@u-0-4']),
('a@u-0-3', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2', 'b@u-0-3', 'b@u-0-4',
'a@u-0-3']),
('a@u-0-4', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2', 'b@u-0-3', 'b@u-0-4',
'a@u-0-3', 'a@u-0-4']),
('b@u-0-5', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2', 'b@u-0-3', 'b@u-0-4',
'b@u-0-5']),
('a@u-0-5', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2', 'a@u-0-3', 'a@u-0-4',
'b@u-0-3', 'b@u-0-4',
'b@u-0-5', 'a@u-0-5']),
('b@u-0-6', ['a@u-0-0', 'a@u-0-1', 'a@u-0-2',
'b@u-0-3', 'b@u-0-4',
'b@u-0-5', 'b@u-0-6']),
]
br1_only = ('a@u-0-3', 'a@u-0-4', 'a@u-0-5')
br2_only = ('b@u-0-6',)
for branch in br1, br2:
for rev_id, anc in d:
if rev_id in br1_only and not branch is br1:
continue
if rev_id in br2_only and not branch is br2:
continue
mutter('ancestry of {%s}: %r',
rev_id, branch.repository.get_ancestry(rev_id))
result = sorted(branch.repository.get_ancestry(rev_id))
self.assertEquals(result, [None] + sorted(anc))
def test_is_ancestor(self):
"""Test checking whether a revision is an ancestor of another revision"""
br1, br2 = make_branches(self)
revisions = br1.revision_history()
revisions_2 = br2.revision_history()
sources = br1
self.assert_(is_ancestor(revisions[0], revisions[0], br1))
self.assert_(is_ancestor(revisions[1], revisions[0], sources))
self.assert_(not is_ancestor(revisions[0], revisions[1], sources))
self.assert_(is_ancestor(revisions_2[3], revisions[0], sources))
# disabled mbp 20050914, doesn't seem to happen anymore
## self.assertRaises(NoSuchRevision, is_ancestor, revisions_2[3],
## revisions[0], br1)
self.assert_(is_ancestor(revisions[3], revisions_2[4], sources))
self.assert_(is_ancestor(revisions[3], revisions_2[4], br1))
self.assert_(is_ancestor(revisions[3], revisions_2[3], sources))
## self.assert_(not is_ancestor(revisions[3], revisions_2[3], br1))
class TestIntermediateRevisions(TestCaseWithTransport):
def setUp(self):
TestCaseWithTransport.setUp(self)
self.br1, self.br2 = make_branches(self)
wt1 = self.br1.bzrdir.open_workingtree()
wt2 = self.br2.bzrdir.open_workingtree()
wt2.commit("Commit eleven", rev_id="b@u-0-7")
wt2.commit("Commit twelve", rev_id="b@u-0-8")
wt2.commit("Commit thirtteen", rev_id="b@u-0-9")
wt1.merge_from_branch(self.br2)
wt1.commit("Commit fourtten", rev_id="a@u-0-6")
wt2.merge_from_branch(self.br1)
wt2.commit("Commit fifteen", rev_id="b@u-0-10")
from bzrlib.revision import MultipleRevisionSources
self.sources = MultipleRevisionSources(self.br1.repository,
self.br2.repository)
class MockRevisionSource(object):
"""A RevisionSource that takes a pregenerated graph.
This is useful for testing revision graph algorithms where
the actual branch existing is irrelevant.
"""
def __init__(self, full_graph):
self._full_graph = full_graph
def get_revision_graph_with_ghosts(self, revision_ids):
# This is mocked out to just return a constant graph.
return self._full_graph
class TestCommonAncestor(TestCaseWithTransport):
"""Test checking whether a revision is an ancestor of another revision"""
def test_common_ancestor(self):
"""Pick a reasonable merge base"""
br1, br2 = make_branches(self)
revisions = br1.revision_history()
revisions_2 = br2.revision_history()
sources = MultipleRevisionSources(br1.repository, br2.repository)
expected_ancestors_list = {revisions[3]:(0, 0),
revisions[2]:(1, 1),
revisions_2[4]:(2, 1),
revisions[1]:(3, 2),
revisions_2[3]:(4, 2),
revisions[0]:(5, 3) }
ancestors_list = find_present_ancestors(revisions[3], sources)
self.assertEquals(len(expected_ancestors_list), len(ancestors_list))
for key, value in expected_ancestors_list.iteritems():
self.assertEqual(ancestors_list[key], value,
"key %r, %r != %r" % (key, ancestors_list[key],
value))
self.assertEqual(common_ancestor(revisions[0], revisions[0], sources),
revisions[0])
self.assertEqual(common_ancestor(revisions[1], revisions[2], sources),
revisions[1])
self.assertEqual(common_ancestor(revisions[1], revisions[1], sources),
revisions[1])
self.assertEqual(common_ancestor(revisions[2], revisions_2[4], sources),
revisions[2])
self.assertEqual(common_ancestor(revisions[3], revisions_2[4], sources),
revisions_2[4])
self.assertEqual(common_ancestor(revisions[4], revisions_2[5], sources),
revisions_2[4])
self.assertTrue(common_ancestor(revisions[5], revisions_2[6], sources) in
(revisions[4], revisions_2[5]))
self.assertTrue(common_ancestor(revisions_2[6], revisions[5], sources),
(revisions[4], revisions_2[5]))
self.assertEqual(None, common_ancestor(None, revisions[5], sources))
self.assertEqual(NULL_REVISION,
common_ancestor(NULL_REVISION, NULL_REVISION, sources))
self.assertEqual(NULL_REVISION,
common_ancestor(revisions[0], NULL_REVISION, sources))
self.assertEqual(NULL_REVISION,
common_ancestor(NULL_REVISION, revisions[0], sources))
def test_combined(self):
"""combined_graph
Ensure it's not order-sensitive
"""
br1, br2 = make_branches(self)
source = MultipleRevisionSources(br1.repository, br2.repository)
combined_1 = combined_graph(br1.last_revision(),
br2.last_revision(), source)
combined_2 = combined_graph(br2.last_revision(),
br1.last_revision(), source)
self.assertEquals(combined_1[1], combined_2[1])
self.assertEquals(combined_1[2], combined_2[2])
self.assertEquals(combined_1[3], combined_2[3])
self.assertEquals(combined_1, combined_2)
def test_get_history(self):
# TODO: test ghosts on the left hand branch's impact
# TODO: test ghosts on all parents, we should get some
# indicator. i.e. NULL_REVISION
# RBC 20060608
tree = self.make_branch_and_tree('.')
tree.commit('1', rev_id = '1', allow_pointless=True)
tree.commit('2', rev_id = '2', allow_pointless=True)
tree.commit('3', rev_id = '3', allow_pointless=True)
rev = tree.branch.repository.get_revision('1')
history = rev.get_history(tree.branch.repository)
self.assertEqual([None, '1'], history)
rev = tree.branch.repository.get_revision('2')
history = rev.get_history(tree.branch.repository)
self.assertEqual([None, '1', '2'], history)
rev = tree.branch.repository.get_revision('3')
history = rev.get_history(tree.branch.repository)
self.assertEqual([None, '1', '2' ,'3'], history)
def test_common_ancestor_rootless_graph(self):
# common_ancestor on a graph with no reachable roots - only
# ghosts - should still return a useful value.
graph = Graph()
# add a ghost node which would be a root if it wasn't a ghost.
graph.add_ghost('a_ghost')
# add a normal commit on top of that
graph.add_node('rev1', ['a_ghost'])
# add a left-branch revision
graph.add_node('left', ['rev1'])
# add a right-branch revision
graph.add_node('right', ['rev1'])
source = MockRevisionSource(graph)
self.assertEqual('rev1', common_ancestor('left', 'right', source))
class TestMultipleRevisionSources(TestCaseWithTransport):
"""Tests for the MultipleRevisionSources adapter."""
def test_get_revision_graph_merges_ghosts(self):
# when we ask for the revision graph for B, which
# is in repo 1 with a ghost of A, and which is not
# in repo 2, which has A, the revision_graph()
# should return A and B both.
tree_1 = self.make_branch_and_tree('1')
tree_1.set_parent_ids(['A'], allow_leftmost_as_ghost=True)
tree_1.commit('foo', rev_id='B', allow_pointless=True)
tree_2 = self.make_branch_and_tree('2')
tree_2.commit('bar', rev_id='A', allow_pointless=True)
source = MultipleRevisionSources(tree_1.branch.repository,
tree_2.branch.repository)
self.assertEqual({'B':['A'],
'A':[]},
source.get_revision_graph('B'))
class TestReservedId(TestCase):
def test_is_reserved_id(self):
self.assertEqual(True, revision.is_reserved_id(NULL_REVISION))
self.assertEqual(True, revision.is_reserved_id(
revision.CURRENT_REVISION))
self.assertEqual(True, revision.is_reserved_id('arch:'))
self.assertEqual(False, revision.is_reserved_id('null'))
self.assertEqual(False, revision.is_reserved_id(
'arch:a@example.com/c--b--v--r'))
self.assertEqual(False, revision.is_reserved_id(None))
|