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tests/test_object_store.py
 
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# Copyright (C) 2010 Jelmer Vernooij <jelmer@samba.org>
 
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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.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Tests for bzr-git's object store."""
 
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from dulwich.objects import (
 
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    Blob,
 
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    )
 
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from bzrlib.branchbuilder import (
 
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    BranchBuilder,
 
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    )
 
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from bzrlib.errors import (
 
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    NoSuchRevision,
 
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    )
 
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from bzrlib.graph import (
 
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    DictParentsProvider,
 
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    Graph,
 
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    )
 
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from bzrlib.tests import (
 
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    TestCase,
 
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    TestCaseWithTransport,
 
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    )
 
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from bzrlib.plugins.git.cache import (
 
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    DictGitShaMap,
 
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    )
 
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from bzrlib.plugins.git.object_store import (
 
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    BazaarObjectStore,
 
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    LRUTreeCache,
 
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    _check_expected_sha,
 
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    _find_missing_bzr_revids,
 
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    _tree_to_objects,
 
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    )
 
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class ExpectedShaTests(TestCase):
 
51
 
 
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    def setUp(self):
 
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        super(ExpectedShaTests, self).setUp()
 
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        self.obj = Blob()
 
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        self.obj.data = "foo"
 
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    def test_none(self):
 
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        _check_expected_sha(None, self.obj)
 
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    def test_hex(self):
 
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        _check_expected_sha(self.obj.sha().hexdigest(), self.obj)
 
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        self.assertRaises(AssertionError, _check_expected_sha, 
 
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            "0" * 40, self.obj)
 
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    def test_binary(self):
 
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        _check_expected_sha(self.obj.sha().digest(), self.obj)
 
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        self.assertRaises(AssertionError, _check_expected_sha, 
 
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            "x" * 20, self.obj)
 
69
 
 
70
 
 
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class FindMissingBzrRevidsTests(TestCase):
 
72
 
 
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    def _find_missing(self, ancestry, want, have):
 
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        return _find_missing_bzr_revids(
 
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            Graph(DictParentsProvider(ancestry)),
 
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            set(want), set(have))
 
77
 
 
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    def test_simple(self):
 
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        self.assertEquals(set(), self._find_missing({}, [], []))
 
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    def test_up_to_date(self):
 
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        self.assertEquals(set(),
 
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                self._find_missing({"a": ["b"]}, ["a"], ["a"]))
 
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    def test_one_missing(self):
 
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        self.assertEquals(set(["a"]),
 
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                self._find_missing({"a": ["b"]}, ["a"], ["b"]))
 
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    def test_two_missing(self):
 
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        self.assertEquals(set(["a", "b"]),
 
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                self._find_missing({"a": ["b"], "b": ["c"]}, ["a"], ["c"]))
 
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    def test_two_missing_history(self):
 
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        self.assertEquals(set(["a", "b"]),
 
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                self._find_missing({"a": ["b"], "b": ["c"], "c": ["d"]},
 
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                    ["a"], ["c"]))
 
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class LRUTreeCacheTests(TestCaseWithTransport):
 
100
 
 
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    def setUp(self):
 
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        super(LRUTreeCacheTests, self).setUp()
 
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        self.branch = self.make_branch(".")
 
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        self.branch.lock_write()
 
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        self.addCleanup(self.branch.unlock)
 
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        self.cache = LRUTreeCache(self.branch.repository)
 
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    def test_get_not_present(self):
 
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        self.assertRaises(NoSuchRevision, self.cache.revision_tree,
 
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                "unknown")
 
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    def test_revision_trees(self):
 
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        self.assertRaises(NoSuchRevision, self.cache.revision_trees,
 
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                ["unknown", "la"])
 
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    def test_iter_revision_trees(self):
 
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        self.assertRaises(NoSuchRevision, self.cache.iter_revision_trees,
 
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                ["unknown", "la"])
 
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    def test_get(self):
 
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        bb = BranchBuilder(branch=self.branch)
 
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        bb.start_series()
 
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        bb.build_snapshot('BASE-id', None,
 
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            [('add', ('', None, 'directory', None)),
 
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             ('add', ('foo', 'foo-id', 'file', 'a\nb\nc\nd\ne\n')),
 
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             ])
 
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        bb.finish_series()
 
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        tree = self.cache.revision_tree("BASE-id")
 
129
        self.assertEquals("BASE-id", tree.get_revision_id())
 
130
 
 
131
 
 
132
class BazaarObjectStoreTests(TestCaseWithTransport):
 
133
 
 
134
    def setUp(self):
 
135
        super(BazaarObjectStoreTests, self).setUp()
 
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        self.branch = self.make_branch(".")
 
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        self.branch.lock_write()
 
138
        self.addCleanup(self.branch.unlock)
 
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        self.store = BazaarObjectStore(self.branch.repository)
 
140
 
 
141
    def test_get_blob(self):
 
142
        b = Blob()
 
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        b.data = 'a\nb\nc\nd\ne\n'
 
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        self.store.lock_read()
 
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        self.addCleanup(self.store.unlock)
 
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        self.assertRaises(KeyError, self.store.__getitem__, b.id)
 
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        bb = BranchBuilder(branch=self.branch)
 
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        bb.start_series()
 
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        bb.build_snapshot('BASE-id', None,
 
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            [('add', ('', None, 'directory', None)),
 
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             ('add', ('foo', 'foo-id', 'file', 'a\nb\nc\nd\ne\n')),
 
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             ])
 
153
        bb.finish_series()
 
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        # read locks cache
 
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        self.assertRaises(KeyError, self.store.__getitem__, b.id)
 
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        self.store.unlock()
 
157
        self.store.lock_read()
 
158
        self.assertEquals(b, self.store[b.id])
 
159
 
 
160
    def test_get_raw(self):
 
161
        b = Blob()
 
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        b.data = 'a\nb\nc\nd\ne\n'
 
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        self.store.lock_read()
 
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        self.addCleanup(self.store.unlock)
 
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        self.assertRaises(KeyError, self.store.get_raw, b.id)
 
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        bb = BranchBuilder(branch=self.branch)
 
167
        bb.start_series()
 
168
        bb.build_snapshot('BASE-id', None,
 
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            [('add', ('', None, 'directory', None)),
 
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             ('add', ('foo', 'foo-id', 'file', 'a\nb\nc\nd\ne\n')),
 
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             ])
 
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        bb.finish_series()
 
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        # read locks cache
 
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        self.assertRaises(KeyError, self.store.get_raw, b.id)
 
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        self.store.unlock()
 
176
        self.store.lock_read()
 
177
        self.assertEquals(b.as_raw_string(), self.store.get_raw(b.id)[1])
 
178
 
 
179
    def test_contains(self):
 
180
        b = Blob()
 
181
        b.data = 'a\nb\nc\nd\ne\n'
 
182
        self.store.lock_read()
 
183
        self.addCleanup(self.store.unlock)
 
184
        self.assertFalse(b.id in self.store)
 
185
        bb = BranchBuilder(branch=self.branch)
 
186
        bb.start_series()
 
187
        bb.build_snapshot('BASE-id', None,
 
188
            [('add', ('', None, 'directory', None)),
 
189
             ('add', ('foo', 'foo-id', 'file', 'a\nb\nc\nd\ne\n')),
 
190
             ])
 
191
        bb.finish_series()
 
192
        # read locks cache
 
193
        self.assertFalse(b.id in self.store)
 
194
        self.store.unlock()
 
195
        self.store.lock_read()
 
196
        self.assertTrue(b.id in self.store)
 
197
 
 
198
 
 
199
class TreeToObjectsTests(TestCaseWithTransport):
 
200
 
 
201
    def setUp(self):
 
202
        super(TreeToObjectsTests, self).setUp()
 
203
        self.idmap = DictGitShaMap()
 
204
 
 
205
    def test_no_changes(self):
 
206
        tree = self.make_branch_and_tree('.')
 
207
        entries = list(_tree_to_objects(tree, [tree], self.idmap, {}))
 
208
        self.assertEquals([], entries)