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
|
# 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
"""Tests for Branch.get_revision_id_to_revno_map()"""
from bzrlib.symbol_versioning import deprecated_in
from bzrlib.tests.per_branch import TestCaseWithBranch
class TestRevisionIdToDottedRevno(TestCaseWithBranch):
def test_simple_revno(self):
tree = self.create_tree_with_merge()
# Re-open the branch so we make sure we start fresh.
# see bug #162486
the_branch = tree.bzrdir.open_branch()
self.assertEqual({'rev-1':(1,), 'rev-2':(2,), 'rev-3':(3,),
'rev-1.1.1':(1,1,1)
}, the_branch.get_revision_id_to_revno_map())
class TestCaching(TestCaseWithBranch):
"""Tests for the caching of branches' dotted revno generation.
When locked, branches should avoid regenerating revision_id=>dotted revno
mapping.
When not locked, obviously the revision_id => dotted revno will need to be
regenerated or reread each time.
We test if revision_history is using the cache by instrumenting the branch's
_gen_revno_map method, which is called by get_revision_id_to_revno_map.
"""
def get_instrumented_branch(self):
"""Get a branch and monkey patch it to log calls to _gen_revno_map.
:returns: a tuple of (the branch, list that calls will be logged to)
"""
tree = self.create_tree_with_merge()
calls = []
real_func = tree.branch._gen_revno_map
def wrapper():
calls.append('_gen_revno_map')
return real_func()
tree.branch._gen_revno_map = wrapper
return tree.branch, calls
def test_unlocked(self):
"""Repeated calls will call _gen_revno_map each time."""
branch, calls = self.get_instrumented_branch()
# Repeatedly call revision_history.
branch.get_revision_id_to_revno_map()
branch.get_revision_id_to_revno_map()
branch.get_revision_id_to_revno_map()
self.assertEqual(['_gen_revno_map']*3, calls)
def test_locked(self):
"""Repeated calls will only call _gen_revno_map once.
"""
branch, calls = self.get_instrumented_branch()
# Lock the branch, then repeatedly call revision_history.
branch.lock_read()
try:
branch.get_revision_id_to_revno_map()
self.assertEqual(['_gen_revno_map'], calls)
finally:
branch.unlock()
def test_set_last_revision_info_when_locked(self):
"""Calling set_last_revision_info should reset the cache."""
branch, calls = self.get_instrumented_branch()
branch.lock_write()
try:
self.assertEqual({'rev-1':(1,), 'rev-2':(2,), 'rev-3':(3,),
'rev-1.1.1':(1,1,1)
}, branch.get_revision_id_to_revno_map())
branch.set_last_revision_info(2, 'rev-2')
self.assertEqual({'rev-1':(1,), 'rev-2':(2,)},
branch.get_revision_id_to_revno_map())
self.assertEqual({'rev-1':(1,), 'rev-2':(2,)},
branch.get_revision_id_to_revno_map())
self.assertEqual(['_gen_revno_map']*2, calls)
finally:
branch.unlock()
|