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  • Committer: Jelmer Vernooij
  • Date: 2017-08-07 11:49:46 UTC
  • mto: (6747.3.4 avoid-set-revid-3)
  • mto: This revision was merged to the branch mainline in revision 6750.
  • Revision ID: jelmer@jelmer.uk-20170807114946-luclmxuawyzhpiot
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breezy/tests/test_memorytree.py
 
1
# Copyright (C) 2006 Canonical Ltd
 
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# Authors:  Robert Collins <robert.collins@canonical.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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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
13
#
 
14
# You should have received a copy of the GNU General Public License
 
15
# along with this program; if not, write to the Free Software
 
16
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Tests for the MemoryTree class."""
 
19
 
 
20
from .. import errors
 
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from ..memorytree import MemoryTree
 
22
from . import TestCaseWithTransport
 
23
from ..treebuilder import TreeBuilder
 
24
 
 
25
 
 
26
class TestMemoryTree(TestCaseWithTransport):
 
27
 
 
28
    def test_create_on_branch(self):
 
29
        """Creating a mutable tree on a trivial branch works."""
 
30
        branch = self.make_branch('branch')
 
31
        tree = MemoryTree.create_on_branch(branch)
 
32
        self.assertEqual(branch.controldir, tree.controldir)
 
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        self.assertEqual(branch, tree.branch)
 
34
        self.assertEqual([], tree.get_parent_ids())
 
35
 
 
36
    def test_create_on_branch_with_content(self):
 
37
        """Creating a mutable tree on a non-trivial branch works."""
 
38
        branch = self.make_branch('branch')
 
39
        tree = MemoryTree.create_on_branch(branch)
 
40
        # build some content
 
41
        tree.lock_write()
 
42
        builder = TreeBuilder()
 
43
        builder.start_tree(tree)
 
44
        builder.build(['foo'])
 
45
        builder.finish_tree()
 
46
        rev_id = tree.commit('first post')
 
47
        tree.unlock()
 
48
        tree = MemoryTree.create_on_branch(branch)
 
49
        tree.lock_read()
 
50
        self.assertEqual([rev_id], tree.get_parent_ids())
 
51
        self.assertEqual('contents of foo\n',
 
52
            tree.get_file(tree.path2id('foo')).read())
 
53
        tree.unlock()
 
54
 
 
55
    def test_get_root_id(self):
 
56
        branch = self.make_branch('branch')
 
57
        tree = MemoryTree.create_on_branch(branch)
 
58
        tree.lock_write()
 
59
        try:
 
60
            tree.add([''])
 
61
            self.assertIsNot(None, tree.get_root_id())
 
62
        finally:
 
63
            tree.unlock()
 
64
 
 
65
    def test_lock_tree_write(self):
 
66
        """Check we can lock_tree_write and unlock MemoryTrees."""
 
67
        branch = self.make_branch('branch')
 
68
        tree = MemoryTree.create_on_branch(branch)
 
69
        tree.lock_tree_write()
 
70
        tree.unlock()
 
71
 
 
72
    def test_lock_tree_write_after_read_fails(self):
 
73
        """Check that we error when trying to upgrade a read lock to write."""
 
74
        branch = self.make_branch('branch')
 
75
        tree = MemoryTree.create_on_branch(branch)
 
76
        tree.lock_read()
 
77
        self.assertRaises(errors.ReadOnlyError, tree.lock_tree_write)
 
78
        tree.unlock()
 
79
 
 
80
    def test_lock_write(self):
 
81
        """Check we can lock_write and unlock MemoryTrees."""
 
82
        branch = self.make_branch('branch')
 
83
        tree = MemoryTree.create_on_branch(branch)
 
84
        tree.lock_write()
 
85
        tree.unlock()
 
86
 
 
87
    def test_lock_write_after_read_fails(self):
 
88
        """Check that we error when trying to upgrade a read lock to write."""
 
89
        branch = self.make_branch('branch')
 
90
        tree = MemoryTree.create_on_branch(branch)
 
91
        tree.lock_read()
 
92
        self.assertRaises(errors.ReadOnlyError, tree.lock_write)
 
93
        tree.unlock()
 
94
 
 
95
    def test_add_with_kind(self):
 
96
        branch = self.make_branch('branch')
 
97
        tree = MemoryTree.create_on_branch(branch)
 
98
        tree.lock_write()
 
99
        tree.add(['', 'afile', 'adir'], None,
 
100
                 ['directory', 'file', 'directory'])
 
101
        self.assertEqual('afile', tree.id2path(tree.path2id('afile')))
 
102
        self.assertEqual('adir', tree.id2path(tree.path2id('adir')))
 
103
        self.assertFalse(tree.has_filename('afile'))
 
104
        self.assertFalse(tree.has_filename('adir'))
 
105
        tree.unlock()
 
106
 
 
107
    def test_put_new_file(self):
 
108
        branch = self.make_branch('branch')
 
109
        tree = MemoryTree.create_on_branch(branch)
 
110
        tree.lock_write()
 
111
        tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
 
112
                  kinds=['directory', 'file'])
 
113
        tree.put_file_bytes_non_atomic('foo-id', 'barshoom')
 
114
        self.assertEqual('barshoom', tree.get_file('foo-id').read())
 
115
        tree.unlock()
 
116
 
 
117
    def test_put_existing_file(self):
 
118
        branch = self.make_branch('branch')
 
119
        tree = MemoryTree.create_on_branch(branch)
 
120
        tree.lock_write()
 
121
        tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
 
122
                 kinds=['directory', 'file'])
 
123
        tree.put_file_bytes_non_atomic('foo-id', 'first-content')
 
124
        tree.put_file_bytes_non_atomic('foo-id', 'barshoom')
 
125
        self.assertEqual('barshoom', tree.get_file('foo-id').read())
 
126
        tree.unlock()
 
127
 
 
128
    def test_add_in_subdir(self):
 
129
        branch = self.make_branch('branch')
 
130
        tree = MemoryTree.create_on_branch(branch)
 
131
        tree.lock_write()
 
132
        self.addCleanup(tree.unlock)
 
133
        tree.add([''], ['root-id'], ['directory'])
 
134
        # Unfortunately, the only way to 'mkdir' is to call 'tree.mkdir', but
 
135
        # that *always* adds the directory as well. So if you want to create a
 
136
        # file in a subdirectory, you have to split out the 'mkdir()' calls
 
137
        # from the add and put_file_bytes_non_atomic calls. :(
 
138
        tree.mkdir('adir', 'dir-id')
 
139
        tree.add(['adir/afile'], ['file-id'], ['file'])
 
140
        self.assertEqual('adir/afile', tree.id2path('file-id'))
 
141
        self.assertEqual('adir', tree.id2path('dir-id'))
 
142
        tree.put_file_bytes_non_atomic('file-id', 'barshoom')
 
143
 
 
144
    def test_commit_trivial(self):
 
145
        """Smoke test for commit on a MemoryTree.
 
146
 
 
147
        Becamse of commits design and layering, if this works, all commit
 
148
        logic should work quite reliably.
 
149
        """
 
150
        branch = self.make_branch('branch')
 
151
        tree = MemoryTree.create_on_branch(branch)
 
152
        tree.lock_write()
 
153
        tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
 
154
                 kinds=['directory', 'file'])
 
155
        tree.put_file_bytes_non_atomic('foo-id', 'barshoom')
 
156
        revision_id = tree.commit('message baby')
 
157
        # the parents list for the tree should have changed.
 
158
        self.assertEqual([revision_id], tree.get_parent_ids())
 
159
        tree.unlock()
 
160
        # and we should have a revision that is accessible outside the tree lock
 
161
        revtree = tree.branch.repository.revision_tree(revision_id)
 
162
        revtree.lock_read()
 
163
        self.addCleanup(revtree.unlock)
 
164
        self.assertEqual('barshoom', revtree.get_file('foo-id').read())
 
165
 
 
166
    def test_unversion(self):
 
167
        """Some test for unversion of a memory tree."""
 
168
        branch = self.make_branch('branch')
 
169
        tree = MemoryTree.create_on_branch(branch)
 
170
        tree.lock_write()
 
171
        tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
 
172
                 kinds=['directory', 'file'])
 
173
        tree.unversion(['foo-id'])
 
174
        self.assertFalse(tree.has_id('foo-id'))
 
175
        tree.unlock()
 
176
 
 
177
    def test_last_revision(self):
 
178
        """There should be a last revision method we can call."""
 
179
        tree = self.make_branch_and_memory_tree('branch')
 
180
        tree.lock_write()
 
181
        tree.add('')
 
182
        rev_id = tree.commit('first post')
 
183
        tree.unlock()
 
184
        self.assertEqual(rev_id, tree.last_revision())
 
185
 
 
186
    def test_rename_file(self):
 
187
        tree = self.make_branch_and_memory_tree('branch')
 
188
        tree.lock_write()
 
189
        self.addCleanup(tree.unlock)
 
190
        tree.add(['', 'foo'], ['root-id', 'foo-id'], ['directory', 'file'])
 
191
        tree.put_file_bytes_non_atomic('foo-id', 'content\n')
 
192
        tree.commit('one', rev_id='rev-one')
 
193
        tree.rename_one('foo', 'bar')
 
194
        self.assertEqual('bar', tree.id2path('foo-id'))
 
195
        self.assertEqual('content\n', tree._file_transport.get_bytes('bar'))
 
196
        self.assertRaises(errors.NoSuchFile,
 
197
                          tree._file_transport.get_bytes, 'foo')
 
198
        tree.commit('two', rev_id='rev-two')
 
199
        self.assertEqual('content\n', tree._file_transport.get_bytes('bar'))
 
200
        self.assertRaises(errors.NoSuchFile,
 
201
                          tree._file_transport.get_bytes, 'foo')
 
202
 
 
203
        rev_tree2 = tree.branch.repository.revision_tree('rev-two')
 
204
        self.assertEqual('bar', rev_tree2.id2path('foo-id'))
 
205
        self.assertEqual('content\n', rev_tree2.get_file_text('foo-id'))
 
206
 
 
207
    def test_rename_file_to_subdir(self):
 
208
        tree = self.make_branch_and_memory_tree('branch')
 
209
        tree.lock_write()
 
210
        self.addCleanup(tree.unlock)
 
211
        tree.add('')
 
212
        tree.mkdir('subdir', 'subdir-id')
 
213
        tree.add('foo', 'foo-id', 'file')
 
214
        tree.put_file_bytes_non_atomic('foo-id', 'content\n')
 
215
        tree.commit('one', rev_id='rev-one')
 
216
 
 
217
        tree.rename_one('foo', 'subdir/bar')
 
218
        self.assertEqual('subdir/bar', tree.id2path('foo-id'))
 
219
        self.assertEqual('content\n',
 
220
                         tree._file_transport.get_bytes('subdir/bar'))
 
221
        tree.commit('two', rev_id='rev-two')
 
222
        rev_tree2 = tree.branch.repository.revision_tree('rev-two')
 
223
        self.assertEqual('subdir/bar', rev_tree2.id2path('foo-id'))