# Copyright (C) 2006-2011 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 Knit data structure""" import gzip from io import BytesIO from patiencediff import PatienceSequenceMatcher import sys from .. import ( errors, multiparent, osutils, tests, transport, ) from ..bzr import ( knit, pack, ) from ..bzr.index import * from ..bzr.knit import ( AnnotatedKnitContent, KnitContent, KnitCorrupt, KnitDataStreamIncompatible, KnitDataStreamUnknown, KnitHeaderError, KnitIndexUnknownMethod, KnitVersionedFiles, PlainKnitContent, _VFContentMapGenerator, _KndxIndex, _KnitGraphIndex, _KnitKeyAccess, make_file_factory, ) from ..bzr import ( knitpack_repo, pack_repo, ) from . import ( TestCase, TestCaseWithMemoryTransport, TestCaseWithTransport, TestNotApplicable, ) from ..bzr.versionedfile import ( AbsentContentFactory, ConstantMapper, network_bytes_to_kind_and_offset, RecordingVersionedFilesDecorator, ) from . import ( features, ) compiled_knit_feature = features.ModuleAvailableFeature( 'breezy.bzr._knit_load_data_pyx') class ErrorTests(TestCase): def test_knit_data_stream_incompatible(self): error = KnitDataStreamIncompatible( 'stream format', 'target format') self.assertEqual('Cannot insert knit data stream of format ' '"stream format" into knit of format ' '"target format".', str(error)) def test_knit_data_stream_unknown(self): error = KnitDataStreamUnknown( 'stream format') self.assertEqual('Cannot parse knit data stream of format ' '"stream format".', str(error)) def test_knit_header_error(self): error = KnitHeaderError('line foo\n', 'path/to/file') self.assertEqual("Knit header error: 'line foo\\n' unexpected" " for file \"path/to/file\".", str(error)) def test_knit_index_unknown_method(self): error = KnitIndexUnknownMethod('http://host/foo.kndx', ['bad', 'no-eol']) self.assertEqual("Knit index http://host/foo.kndx does not have a" " known method in options: ['bad', 'no-eol']", str(error)) class KnitContentTestsMixin(object): def test_constructor(self): content = self._make_content([]) def test_text(self): content = self._make_content([]) self.assertEqual(content.text(), []) content = self._make_content( [(b"origin1", b"text1"), (b"origin2", b"text2")]) self.assertEqual(content.text(), [b"text1", b"text2"]) def test_copy(self): content = self._make_content( [(b"origin1", b"text1"), (b"origin2", b"text2")]) copy = content.copy() self.assertIsInstance(copy, content.__class__) self.assertEqual(copy.annotate(), content.annotate()) def assertDerivedBlocksEqual(self, source, target, noeol=False): """Assert that the derived matching blocks match real output""" source_lines = source.splitlines(True) target_lines = target.splitlines(True) def nl(line): if noeol and not line.endswith('\n'): return line + '\n' else: return line source_content = self._make_content( [(None, nl(l)) for l in source_lines]) target_content = self._make_content( [(None, nl(l)) for l in target_lines]) line_delta = source_content.line_delta(target_content) delta_blocks = list(KnitContent.get_line_delta_blocks(line_delta, source_lines, target_lines)) matcher = PatienceSequenceMatcher(None, source_lines, target_lines) matcher_blocks = list(matcher.get_matching_blocks()) self.assertEqual(matcher_blocks, delta_blocks) def test_get_line_delta_blocks(self): self.assertDerivedBlocksEqual('a\nb\nc\n', 'q\nc\n') self.assertDerivedBlocksEqual(TEXT_1, TEXT_1) self.assertDerivedBlocksEqual(TEXT_1, TEXT_1A) self.assertDerivedBlocksEqual(TEXT_1, TEXT_1B) self.assertDerivedBlocksEqual(TEXT_1B, TEXT_1A) self.assertDerivedBlocksEqual(TEXT_1A, TEXT_1B) self.assertDerivedBlocksEqual(TEXT_1A, '') self.assertDerivedBlocksEqual('', TEXT_1A) self.assertDerivedBlocksEqual('', '') self.assertDerivedBlocksEqual('a\nb\nc', 'a\nb\nc\nd') def test_get_line_delta_blocks_noeol(self): """Handle historical knit deltas safely Some existing knit deltas don't consider the last line to differ when the only difference whether it has a final newline. New knit deltas appear to always consider the last line to differ in this case. """ self.assertDerivedBlocksEqual('a\nb\nc', 'a\nb\nc\nd\n', noeol=True) self.assertDerivedBlocksEqual('a\nb\nc\nd\n', 'a\nb\nc', noeol=True) self.assertDerivedBlocksEqual('a\nb\nc\n', 'a\nb\nc', noeol=True) self.assertDerivedBlocksEqual('a\nb\nc', 'a\nb\nc\n', noeol=True) TEXT_1 = """\ Banana cup cakes: - bananas - eggs - broken tea cups """ TEXT_1A = """\ Banana cup cake recipe (serves 6) - bananas - eggs - broken tea cups - self-raising flour """ TEXT_1B = """\ Banana cup cake recipe - bananas (do not use plantains!!!) - broken tea cups - flour """ delta_1_1a = """\ 0,1,2 Banana cup cake recipe (serves 6) 5,5,1 - self-raising flour """ TEXT_2 = """\ Boeuf bourguignon - beef - red wine - small onions - carrot - mushrooms """ class TestPlainKnitContent(TestCase, KnitContentTestsMixin): def _make_content(self, lines): annotated_content = AnnotatedKnitContent(lines) return PlainKnitContent(annotated_content.text(), 'bogus') def test_annotate(self): content = self._make_content([]) self.assertEqual(content.annotate(), []) content = self._make_content( [("origin1", "text1"), ("origin2", "text2")]) self.assertEqual(content.annotate(), [("bogus", "text1"), ("bogus", "text2")]) def test_line_delta(self): content1 = self._make_content([("", "a"), ("", "b")]) content2 = self._make_content([("", "a"), ("", "a"), ("", "c")]) self.assertEqual(content1.line_delta(content2), [(1, 2, 2, ["a", "c"])]) def test_line_delta_iter(self): content1 = self._make_content([("", "a"), ("", "b")]) content2 = self._make_content([("", "a"), ("", "a"), ("", "c")]) it = content1.line_delta_iter(content2) self.assertEqual(next(it), (1, 2, 2, ["a", "c"])) self.assertRaises(StopIteration, next, it) class TestAnnotatedKnitContent(TestCase, KnitContentTestsMixin): def _make_content(self, lines): return AnnotatedKnitContent(lines) def test_annotate(self): content = self._make_content([]) self.assertEqual(content.annotate(), []) content = self._make_content( [(b"origin1", b"text1"), (b"origin2", b"text2")]) self.assertEqual(content.annotate(), [(b"origin1", b"text1"), (b"origin2", b"text2")]) def test_line_delta(self): content1 = self._make_content([("", "a"), ("", "b")]) content2 = self._make_content([("", "a"), ("", "a"), ("", "c")]) self.assertEqual(content1.line_delta(content2), [(1, 2, 2, [("", "a"), ("", "c")])]) def test_line_delta_iter(self): content1 = self._make_content([("", "a"), ("", "b")]) content2 = self._make_content([("", "a"), ("", "a"), ("", "c")]) it = content1.line_delta_iter(content2) self.assertEqual(next(it), (1, 2, 2, [("", "a"), ("", "c")])) self.assertRaises(StopIteration, next, it) class MockTransport(object): def __init__(self, file_lines=None): self.file_lines = file_lines self.calls = [] # We have no base directory for the MockTransport self.base = '' def get(self, filename): if self.file_lines is None: raise errors.NoSuchFile(filename) else: return BytesIO(b"\n".join(self.file_lines)) def readv(self, relpath, offsets): fp = self.get(relpath) for offset, size in offsets: fp.seek(offset) yield offset, fp.read(size) def __getattr__(self, name): def queue_call(*args, **kwargs): self.calls.append((name, args, kwargs)) return queue_call class MockReadvFailingTransport(MockTransport): """Fail in the middle of a readv() result. This Transport will successfully yield the first two requested hunks, but raise NoSuchFile for the rest. """ def readv(self, relpath, offsets): count = 0 for result in MockTransport.readv(self, relpath, offsets): count += 1 # we use 2 because the first offset is the pack header, the second # is the first actual content requset if count > 2: raise errors.NoSuchFile(relpath) yield result class KnitRecordAccessTestsMixin(object): """Tests for getting and putting knit records.""" def test_add_raw_records(self): """Add_raw_records adds records retrievable later.""" access = self.get_access() memos = access.add_raw_records([(b'key', 10)], b'1234567890') self.assertEqual([b'1234567890'], list(access.get_raw_records(memos))) def test_add_several_raw_records(self): """add_raw_records with many records and read some back.""" access = self.get_access() memos = access.add_raw_records([(b'key', 10), (b'key2', 2), (b'key3', 5)], b'12345678901234567') self.assertEqual([b'1234567890', b'12', b'34567'], list(access.get_raw_records(memos))) self.assertEqual([b'1234567890'], list(access.get_raw_records(memos[0:1]))) self.assertEqual([b'12'], list(access.get_raw_records(memos[1:2]))) self.assertEqual([b'34567'], list(access.get_raw_records(memos[2:3]))) self.assertEqual([b'1234567890', b'34567'], list(access.get_raw_records(memos[0:1] + memos[2:3]))) class TestKnitKnitAccess(TestCaseWithMemoryTransport, KnitRecordAccessTestsMixin): """Tests for the .kndx implementation.""" def get_access(self): """Get a .knit style access instance.""" mapper = ConstantMapper("foo") access = _KnitKeyAccess(self.get_transport(), mapper) return access class _TestException(Exception): """Just an exception for local tests to use.""" class TestPackKnitAccess(TestCaseWithMemoryTransport, KnitRecordAccessTestsMixin): """Tests for the pack based access.""" def get_access(self): return self._get_access()[0] def _get_access(self, packname='packfile', index='FOO'): transport = self.get_transport() def write_data(bytes): transport.append_bytes(packname, bytes) writer = pack.ContainerWriter(write_data) writer.begin() access = pack_repo._DirectPackAccess({}) access.set_writer(writer, index, (transport, packname)) return access, writer def make_pack_file(self): """Create a pack file with 2 records.""" access, writer = self._get_access(packname='packname', index='foo') memos = [] memos.extend(access.add_raw_records([(b'key1', 10)], b'1234567890')) memos.extend(access.add_raw_records([(b'key2', 5)], b'12345')) writer.end() return memos def test_pack_collection_pack_retries(self): """An explicit pack of a pack collection succeeds even when a concurrent pack happens. """ builder = self.make_branch_builder('.') builder.start_series() builder.build_snapshot(None, [ ('add', ('', b'root-id', 'directory', None)), ('add', ('file', b'file-id', 'file', b'content\nrev 1\n')), ], revision_id=b'rev-1') builder.build_snapshot([b'rev-1'], [ ('modify', ('file', b'content\nrev 2\n')), ], revision_id=b'rev-2') builder.build_snapshot([b'rev-2'], [ ('modify', ('file', b'content\nrev 3\n')), ], revision_id=b'rev-3') self.addCleanup(builder.finish_series) b = builder.get_branch() self.addCleanup(b.lock_write().unlock) repo = b.repository collection = repo._pack_collection # Concurrently repack the repo. reopened_repo = repo.controldir.open_repository() reopened_repo.pack() # Pack the new pack. collection.pack() def make_vf_for_retrying(self): """Create 3 packs and a reload function. Originally, 2 pack files will have the data, but one will be missing. And then the third will be used in place of the first two if reload() is called. :return: (versioned_file, reload_counter) versioned_file a KnitVersionedFiles using the packs for access """ builder = self.make_branch_builder('.', format="1.9") builder.start_series() builder.build_snapshot(None, [ ('add', ('', b'root-id', 'directory', None)), ('add', ('file', b'file-id', 'file', b'content\nrev 1\n')), ], revision_id=b'rev-1') builder.build_snapshot([b'rev-1'], [ ('modify', ('file', b'content\nrev 2\n')), ], revision_id=b'rev-2') builder.build_snapshot([b'rev-2'], [ ('modify', ('file', b'content\nrev 3\n')), ], revision_id=b'rev-3') builder.finish_series() b = builder.get_branch() b.lock_write() self.addCleanup(b.unlock) # Pack these three revisions into another pack file, but don't remove # the originals repo = b.repository collection = repo._pack_collection collection.ensure_loaded() orig_packs = collection.packs packer = knitpack_repo.KnitPacker(collection, orig_packs, '.testpack') new_pack = packer.pack() # forget about the new pack collection.reset() repo.refresh_data() vf = repo.revisions # Set up a reload() function that switches to using the new pack file new_index = new_pack.revision_index access_tuple = new_pack.access_tuple() reload_counter = [0, 0, 0] def reload(): reload_counter[0] += 1 if reload_counter[1] > 0: # We already reloaded, nothing more to do reload_counter[2] += 1 return False reload_counter[1] += 1 vf._index._graph_index._indices[:] = [new_index] vf._access._indices.clear() vf._access._indices[new_index] = access_tuple return True # Delete one of the pack files so the data will need to be reloaded. We # will delete the file with 'rev-2' in it trans, name = orig_packs[1].access_tuple() trans.delete(name) # We don't have the index trigger reloading because we want to test # that we reload when the .pack disappears vf._access._reload_func = reload return vf, reload_counter def make_reload_func(self, return_val=True): reload_called = [0] def reload(): reload_called[0] += 1 return return_val return reload_called, reload def make_retry_exception(self): # We raise a real exception so that sys.exc_info() is properly # populated try: raise _TestException('foobar') except _TestException as e: retry_exc = errors.RetryWithNewPacks(None, reload_occurred=False, exc_info=sys.exc_info()) # GZ 2010-08-10: Cycle with exc_info affects 3 tests return retry_exc def test_read_from_several_packs(self): access, writer = self._get_access() memos = [] memos.extend(access.add_raw_records([(b'key', 10)], b'1234567890')) writer.end() access, writer = self._get_access('pack2', 'FOOBAR') memos.extend(access.add_raw_records([(b'key', 5)], b'12345')) writer.end() access, writer = self._get_access('pack3', 'BAZ') memos.extend(access.add_raw_records([(b'key', 5)], b'alpha')) writer.end() transport = self.get_transport() access = pack_repo._DirectPackAccess({"FOO": (transport, 'packfile'), "FOOBAR": (transport, 'pack2'), "BAZ": (transport, 'pack3')}) self.assertEqual([b'1234567890', b'12345', b'alpha'], list(access.get_raw_records(memos))) self.assertEqual([b'1234567890'], list(access.get_raw_records(memos[0:1]))) self.assertEqual([b'12345'], list(access.get_raw_records(memos[1:2]))) self.assertEqual([b'alpha'], list(access.get_raw_records(memos[2:3]))) self.assertEqual([b'1234567890', b'alpha'], list(access.get_raw_records(memos[0:1] + memos[2:3]))) def test_set_writer(self): """The writer should be settable post construction.""" access = pack_repo._DirectPackAccess({}) transport = self.get_transport() packname = 'packfile' index = 'foo' def write_data(bytes): transport.append_bytes(packname, bytes) writer = pack.ContainerWriter(write_data) writer.begin() access.set_writer(writer, index, (transport, packname)) memos = access.add_raw_records([(b'key', 10)], b'1234567890') writer.end() self.assertEqual([b'1234567890'], list(access.get_raw_records(memos))) def test_missing_index_raises_retry(self): memos = self.make_pack_file() transport = self.get_transport() reload_called, reload_func = self.make_reload_func() # Note that the index key has changed from 'foo' to 'bar' access = pack_repo._DirectPackAccess({'bar': (transport, 'packname')}, reload_func=reload_func) e = self.assertListRaises(errors.RetryWithNewPacks, access.get_raw_records, memos) # Because a key was passed in which does not match our index list, we # assume that the listing was already reloaded self.assertTrue(e.reload_occurred) self.assertIsInstance(e.exc_info, tuple) self.assertIs(e.exc_info[0], KeyError) self.assertIsInstance(e.exc_info[1], KeyError) def test_missing_index_raises_key_error_with_no_reload(self): memos = self.make_pack_file() transport = self.get_transport() # Note that the index key has changed from 'foo' to 'bar' access = pack_repo._DirectPackAccess({'bar': (transport, 'packname')}) e = self.assertListRaises(KeyError, access.get_raw_records, memos) def test_missing_file_raises_retry(self): memos = self.make_pack_file() transport = self.get_transport() reload_called, reload_func = self.make_reload_func() # Note that the 'filename' has been changed to 'different-packname' access = pack_repo._DirectPackAccess( {'foo': (transport, 'different-packname')}, reload_func=reload_func) e = self.assertListRaises(errors.RetryWithNewPacks, access.get_raw_records, memos) # The file has gone missing, so we assume we need to reload self.assertFalse(e.reload_occurred) self.assertIsInstance(e.exc_info, tuple) self.assertIs(e.exc_info[0], errors.NoSuchFile) self.assertIsInstance(e.exc_info[1], errors.NoSuchFile) self.assertEqual('different-packname', e.exc_info[1].path) def test_missing_file_raises_no_such_file_with_no_reload(self): memos = self.make_pack_file() transport = self.get_transport() # Note that the 'filename' has been changed to 'different-packname' access = pack_repo._DirectPackAccess( {'foo': (transport, 'different-packname')}) e = self.assertListRaises(errors.NoSuchFile, access.get_raw_records, memos) def test_failing_readv_raises_retry(self): memos = self.make_pack_file() transport = self.get_transport() failing_transport = MockReadvFailingTransport( [transport.get_bytes('packname')]) reload_called, reload_func = self.make_reload_func() access = pack_repo._DirectPackAccess( {'foo': (failing_transport, 'packname')}, reload_func=reload_func) # Asking for a single record will not trigger the Mock failure self.assertEqual([b'1234567890'], list(access.get_raw_records(memos[:1]))) self.assertEqual([b'12345'], list(access.get_raw_records(memos[1:2]))) # A multiple offset readv() will fail mid-way through e = self.assertListRaises(errors.RetryWithNewPacks, access.get_raw_records, memos) # The file has gone missing, so we assume we need to reload self.assertFalse(e.reload_occurred) self.assertIsInstance(e.exc_info, tuple) self.assertIs(e.exc_info[0], errors.NoSuchFile) self.assertIsInstance(e.exc_info[1], errors.NoSuchFile) self.assertEqual('packname', e.exc_info[1].path) def test_failing_readv_raises_no_such_file_with_no_reload(self): memos = self.make_pack_file() transport = self.get_transport() failing_transport = MockReadvFailingTransport( [transport.get_bytes('packname')]) reload_called, reload_func = self.make_reload_func() access = pack_repo._DirectPackAccess( {'foo': (failing_transport, 'packname')}) # Asking for a single record will not trigger the Mock failure self.assertEqual([b'1234567890'], list(access.get_raw_records(memos[:1]))) self.assertEqual([b'12345'], list(access.get_raw_records(memos[1:2]))) # A multiple offset readv() will fail mid-way through e = self.assertListRaises(errors.NoSuchFile, access.get_raw_records, memos) def test_reload_or_raise_no_reload(self): access = pack_repo._DirectPackAccess({}, reload_func=None) retry_exc = self.make_retry_exception() # Without a reload_func, we will just re-raise the original exception self.assertRaises(_TestException, access.reload_or_raise, retry_exc) def test_reload_or_raise_reload_changed(self): reload_called, reload_func = self.make_reload_func(return_val=True) access = pack_repo._DirectPackAccess({}, reload_func=reload_func) retry_exc = self.make_retry_exception() access.reload_or_raise(retry_exc) self.assertEqual([1], reload_called) retry_exc.reload_occurred = True access.reload_or_raise(retry_exc) self.assertEqual([2], reload_called) def test_reload_or_raise_reload_no_change(self): reload_called, reload_func = self.make_reload_func(return_val=False) access = pack_repo._DirectPackAccess({}, reload_func=reload_func) retry_exc = self.make_retry_exception() # If reload_occurred is False, then we consider it an error to have # reload_func() return False (no changes). self.assertRaises(_TestException, access.reload_or_raise, retry_exc) self.assertEqual([1], reload_called) retry_exc.reload_occurred = True # If reload_occurred is True, then we assume nothing changed because # it had changed earlier, but didn't change again access.reload_or_raise(retry_exc) self.assertEqual([2], reload_called) def test_annotate_retries(self): vf, reload_counter = self.make_vf_for_retrying() # It is a little bit bogus to annotate the Revision VF, but it works, # as we have ancestry stored there key = (b'rev-3',) reload_lines = vf.annotate(key) self.assertEqual([1, 1, 0], reload_counter) plain_lines = vf.annotate(key) self.assertEqual([1, 1, 0], reload_counter) # No extra reloading if reload_lines != plain_lines: self.fail('Annotation was not identical with reloading.') # Now delete the packs-in-use, which should trigger another reload, but # this time we just raise an exception because we can't recover for trans, name in vf._access._indices.values(): trans.delete(name) self.assertRaises(errors.NoSuchFile, vf.annotate, key) self.assertEqual([2, 1, 1], reload_counter) def test__get_record_map_retries(self): vf, reload_counter = self.make_vf_for_retrying() keys = [(b'rev-1',), (b'rev-2',), (b'rev-3',)] records = vf._get_record_map(keys) self.assertEqual(keys, sorted(records.keys())) self.assertEqual([1, 1, 0], reload_counter) # Now delete the packs-in-use, which should trigger another reload, but # this time we just raise an exception because we can't recover for trans, name in vf._access._indices.values(): trans.delete(name) self.assertRaises(errors.NoSuchFile, vf._get_record_map, keys) self.assertEqual([2, 1, 1], reload_counter) def test_get_record_stream_retries(self): vf, reload_counter = self.make_vf_for_retrying() keys = [(b'rev-1',), (b'rev-2',), (b'rev-3',)] record_stream = vf.get_record_stream(keys, 'topological', False) record = next(record_stream) self.assertEqual((b'rev-1',), record.key) self.assertEqual([0, 0, 0], reload_counter) record = next(record_stream) self.assertEqual((b'rev-2',), record.key) self.assertEqual([1, 1, 0], reload_counter) record = next(record_stream) self.assertEqual((b'rev-3',), record.key) self.assertEqual([1, 1, 0], reload_counter) # Now delete all pack files, and see that we raise the right error for trans, name in vf._access._indices.values(): trans.delete(name) self.assertListRaises(errors.NoSuchFile, vf.get_record_stream, keys, 'topological', False) def test_iter_lines_added_or_present_in_keys_retries(self): vf, reload_counter = self.make_vf_for_retrying() keys = [(b'rev-1',), (b'rev-2',), (b'rev-3',)] # Unfortunately, iter_lines_added_or_present_in_keys iterates the # result in random order (determined by the iteration order from a # set()), so we don't have any solid way to trigger whether data is # read before or after. However we tried to delete the middle node to # exercise the code well. # What we care about is that all lines are always yielded, but not # duplicated count = 0 reload_lines = sorted(vf.iter_lines_added_or_present_in_keys(keys)) self.assertEqual([1, 1, 0], reload_counter) # Now do it again, to make sure the result is equivalent plain_lines = sorted(vf.iter_lines_added_or_present_in_keys(keys)) self.assertEqual([1, 1, 0], reload_counter) # No extra reloading self.assertEqual(plain_lines, reload_lines) self.assertEqual(21, len(plain_lines)) # Now delete all pack files, and see that we raise the right error for trans, name in vf._access._indices.values(): trans.delete(name) self.assertListRaises(errors.NoSuchFile, vf.iter_lines_added_or_present_in_keys, keys) self.assertEqual([2, 1, 1], reload_counter) def test_get_record_stream_yields_disk_sorted_order(self): # if we get 'unordered' pick a semi-optimal order for reading. The # order should be grouped by pack file, and then by position in file repo = self.make_repository('test', format='pack-0.92') repo.lock_write() self.addCleanup(repo.unlock) repo.start_write_group() vf = repo.texts vf.add_lines((b'f-id', b'rev-5'), [(b'f-id', b'rev-4')], [b'lines\n']) vf.add_lines((b'f-id', b'rev-1'), [], [b'lines\n']) vf.add_lines((b'f-id', b'rev-2'), [(b'f-id', b'rev-1')], [b'lines\n']) repo.commit_write_group() # We inserted them as rev-5, rev-1, rev-2, we should get them back in # the same order stream = vf.get_record_stream([(b'f-id', b'rev-1'), (b'f-id', b'rev-5'), (b'f-id', b'rev-2')], 'unordered', False) keys = [r.key for r in stream] self.assertEqual([(b'f-id', b'rev-5'), (b'f-id', b'rev-1'), (b'f-id', b'rev-2')], keys) repo.start_write_group() vf.add_lines((b'f-id', b'rev-4'), [(b'f-id', b'rev-3')], [b'lines\n']) vf.add_lines((b'f-id', b'rev-3'), [(b'f-id', b'rev-2')], [b'lines\n']) vf.add_lines((b'f-id', b'rev-6'), [(b'f-id', b'rev-5')], [b'lines\n']) repo.commit_write_group() # Request in random order, to make sure the output order isn't based on # the request request_keys = set((b'f-id', b'rev-%d' % i) for i in range(1, 7)) stream = vf.get_record_stream(request_keys, 'unordered', False) keys = [r.key for r in stream] # We want to get the keys back in disk order, but it doesn't matter # which pack we read from first. So this can come back in 2 orders alt1 = [(b'f-id', b'rev-%d' % i) for i in [4, 3, 6, 5, 1, 2]] alt2 = [(b'f-id', b'rev-%d' % i) for i in [5, 1, 2, 4, 3, 6]] if keys != alt1 and keys != alt2: self.fail('Returned key order did not match either expected order.' ' expected %s or %s, not %s' % (alt1, alt2, keys)) class LowLevelKnitDataTests(TestCase): def create_gz_content(self, text): sio = BytesIO() with gzip.GzipFile(mode='wb', fileobj=sio) as gz_file: gz_file.write(text) return sio.getvalue() def make_multiple_records(self): """Create the content for multiple records.""" sha1sum = osutils.sha_string(b'foo\nbar\n') total_txt = [] gz_txt = self.create_gz_content(b'version rev-id-1 2 %s\n' b'foo\n' b'bar\n' b'end rev-id-1\n' % (sha1sum,)) record_1 = (0, len(gz_txt), sha1sum) total_txt.append(gz_txt) sha1sum = osutils.sha_string(b'baz\n') gz_txt = self.create_gz_content(b'version rev-id-2 1 %s\n' b'baz\n' b'end rev-id-2\n' % (sha1sum,)) record_2 = (record_1[1], len(gz_txt), sha1sum) total_txt.append(gz_txt) return total_txt, record_1, record_2 def test_valid_knit_data(self): sha1sum = osutils.sha_string(b'foo\nbar\n') gz_txt = self.create_gz_content(b'version rev-id-1 2 %s\n' b'foo\n' b'bar\n' b'end rev-id-1\n' % (sha1sum,)) transport = MockTransport([gz_txt]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) records = [((b'rev-id-1',), ((b'rev-id-1',), 0, len(gz_txt)))] contents = list(knit._read_records_iter(records)) self.assertEqual([((b'rev-id-1',), [b'foo\n', b'bar\n'], b'4e48e2c9a3d2ca8a708cb0cc545700544efb5021')], contents) raw_contents = list(knit._read_records_iter_raw(records)) self.assertEqual([((b'rev-id-1',), gz_txt, sha1sum)], raw_contents) def test_multiple_records_valid(self): total_txt, record_1, record_2 = self.make_multiple_records() transport = MockTransport([b''.join(total_txt)]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) records = [((b'rev-id-1',), ((b'rev-id-1',), record_1[0], record_1[1])), ((b'rev-id-2',), ((b'rev-id-2',), record_2[0], record_2[1]))] contents = list(knit._read_records_iter(records)) self.assertEqual([((b'rev-id-1',), [b'foo\n', b'bar\n'], record_1[2]), ((b'rev-id-2',), [b'baz\n'], record_2[2])], contents) raw_contents = list(knit._read_records_iter_raw(records)) self.assertEqual([((b'rev-id-1',), total_txt[0], record_1[2]), ((b'rev-id-2',), total_txt[1], record_2[2])], raw_contents) def test_not_enough_lines(self): sha1sum = osutils.sha_string(b'foo\n') # record says 2 lines data says 1 gz_txt = self.create_gz_content(b'version rev-id-1 2 %s\n' b'foo\n' b'end rev-id-1\n' % (sha1sum,)) transport = MockTransport([gz_txt]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) records = [((b'rev-id-1',), ((b'rev-id-1',), 0, len(gz_txt)))] self.assertRaises(KnitCorrupt, list, knit._read_records_iter(records)) # read_records_iter_raw won't detect that sort of mismatch/corruption raw_contents = list(knit._read_records_iter_raw(records)) self.assertEqual([((b'rev-id-1',), gz_txt, sha1sum)], raw_contents) def test_too_many_lines(self): sha1sum = osutils.sha_string(b'foo\nbar\n') # record says 1 lines data says 2 gz_txt = self.create_gz_content(b'version rev-id-1 1 %s\n' b'foo\n' b'bar\n' b'end rev-id-1\n' % (sha1sum,)) transport = MockTransport([gz_txt]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) records = [((b'rev-id-1',), ((b'rev-id-1',), 0, len(gz_txt)))] self.assertRaises(KnitCorrupt, list, knit._read_records_iter(records)) # read_records_iter_raw won't detect that sort of mismatch/corruption raw_contents = list(knit._read_records_iter_raw(records)) self.assertEqual([((b'rev-id-1',), gz_txt, sha1sum)], raw_contents) def test_mismatched_version_id(self): sha1sum = osutils.sha_string(b'foo\nbar\n') gz_txt = self.create_gz_content(b'version rev-id-1 2 %s\n' b'foo\n' b'bar\n' b'end rev-id-1\n' % (sha1sum,)) transport = MockTransport([gz_txt]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) # We are asking for rev-id-2, but the data is rev-id-1 records = [((b'rev-id-2',), ((b'rev-id-2',), 0, len(gz_txt)))] self.assertRaises(KnitCorrupt, list, knit._read_records_iter(records)) # read_records_iter_raw detects mismatches in the header self.assertRaises(KnitCorrupt, list, knit._read_records_iter_raw(records)) def test_uncompressed_data(self): sha1sum = osutils.sha_string(b'foo\nbar\n') txt = (b'version rev-id-1 2 %s\n' b'foo\n' b'bar\n' b'end rev-id-1\n' % (sha1sum,)) transport = MockTransport([txt]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) records = [((b'rev-id-1',), ((b'rev-id-1',), 0, len(txt)))] # We don't have valid gzip data ==> corrupt self.assertRaises(KnitCorrupt, list, knit._read_records_iter(records)) # read_records_iter_raw will notice the bad data self.assertRaises(KnitCorrupt, list, knit._read_records_iter_raw(records)) def test_corrupted_data(self): sha1sum = osutils.sha_string(b'foo\nbar\n') gz_txt = self.create_gz_content(b'version rev-id-1 2 %s\n' b'foo\n' b'bar\n' b'end rev-id-1\n' % (sha1sum,)) # Change 2 bytes in the middle to \xff gz_txt = gz_txt[:10] + b'\xff\xff' + gz_txt[12:] transport = MockTransport([gz_txt]) access = _KnitKeyAccess(transport, ConstantMapper('filename')) knit = KnitVersionedFiles(None, access) records = [((b'rev-id-1',), ((b'rev-id-1',), 0, len(gz_txt)))] self.assertRaises(KnitCorrupt, list, knit._read_records_iter(records)) # read_records_iter_raw will barf on bad gz data self.assertRaises(KnitCorrupt, list, knit._read_records_iter_raw(records)) class LowLevelKnitIndexTests(TestCase): @property def _load_data(self): from ..bzr._knit_load_data_py import _load_data_py return _load_data_py def get_knit_index(self, transport, name, mode): mapper = ConstantMapper(name) self.overrideAttr(knit, '_load_data', self._load_data) def allow_writes(): return 'w' in mode return _KndxIndex(transport, mapper, lambda: None, allow_writes, lambda: True) def test_create_file(self): transport = MockTransport() index = self.get_knit_index(transport, "filename", "w") index.keys() call = transport.calls.pop(0) # call[1][1] is a BytesIO - we can't test it by simple equality. self.assertEqual('put_file_non_atomic', call[0]) self.assertEqual('filename.kndx', call[1][0]) # With no history, _KndxIndex writes a new index: self.assertEqual(_KndxIndex.HEADER, call[1][1].getvalue()) self.assertEqual({'create_parent_dir': True}, call[2]) def test_read_utf8_version_id(self): unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}" utf8_revision_id = unicode_revision_id.encode('utf-8') transport = MockTransport([ _KndxIndex.HEADER, b'%s option 0 1 :' % (utf8_revision_id,) ]) index = self.get_knit_index(transport, "filename", "r") # _KndxIndex is a private class, and deals in utf8 revision_ids, not # Unicode revision_ids. self.assertEqual({(utf8_revision_id,): ()}, index.get_parent_map(index.keys())) self.assertFalse((unicode_revision_id,) in index.keys()) def test_read_utf8_parents(self): unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}" utf8_revision_id = unicode_revision_id.encode('utf-8') transport = MockTransport([ _KndxIndex.HEADER, b"version option 0 1 .%s :" % (utf8_revision_id,) ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual({(b"version",): ((utf8_revision_id,),)}, index.get_parent_map(index.keys())) def test_read_ignore_corrupted_lines(self): transport = MockTransport([ _KndxIndex.HEADER, b"corrupted", b"corrupted options 0 1 .b .c ", b"version options 0 1 :" ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual(1, len(index.keys())) self.assertEqual({(b"version",)}, index.keys()) def test_read_corrupted_header(self): transport = MockTransport([b'not a bzr knit index header\n']) index = self.get_knit_index(transport, "filename", "r") self.assertRaises(KnitHeaderError, index.keys) def test_read_duplicate_entries(self): transport = MockTransport([ _KndxIndex.HEADER, b"parent options 0 1 :", b"version options1 0 1 0 :", b"version options2 1 2 .other :", b"version options3 3 4 0 .other :" ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual(2, len(index.keys())) # check that the index used is the first one written. (Specific # to KnitIndex style indices. self.assertEqual(b"1", index._dictionary_compress([(b"version",)])) self.assertEqual(((b"version",), 3, 4), index.get_position((b"version",))) self.assertEqual([b"options3"], index.get_options((b"version",))) self.assertEqual({(b"version",): ((b"parent",), (b"other",))}, index.get_parent_map([(b"version",)])) def test_read_compressed_parents(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 1 :", b"b option 0 1 0 :", b"c option 0 1 1 0 :", ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual({(b"b",): ((b"a",),), (b"c",): ((b"b",), (b"a",))}, index.get_parent_map([(b"b",), (b"c",)])) def test_write_utf8_version_id(self): unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}" utf8_revision_id = unicode_revision_id.encode('utf-8') transport = MockTransport([ _KndxIndex.HEADER ]) index = self.get_knit_index(transport, "filename", "r") index.add_records([ ((utf8_revision_id,), [b"option"], ((utf8_revision_id,), 0, 1), [])]) call = transport.calls.pop(0) # call[1][1] is a BytesIO - we can't test it by simple equality. self.assertEqual('put_file_non_atomic', call[0]) self.assertEqual('filename.kndx', call[1][0]) # With no history, _KndxIndex writes a new index: self.assertEqual(_KndxIndex.HEADER + b"\n%s option 0 1 :" % (utf8_revision_id,), call[1][1].getvalue()) self.assertEqual({'create_parent_dir': True}, call[2]) def test_write_utf8_parents(self): unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}" utf8_revision_id = unicode_revision_id.encode('utf-8') transport = MockTransport([ _KndxIndex.HEADER ]) index = self.get_knit_index(transport, "filename", "r") index.add_records([ ((b"version",), [b"option"], ((b"version",), 0, 1), [(utf8_revision_id,)])]) call = transport.calls.pop(0) # call[1][1] is a BytesIO - we can't test it by simple equality. self.assertEqual('put_file_non_atomic', call[0]) self.assertEqual('filename.kndx', call[1][0]) # With no history, _KndxIndex writes a new index: self.assertEqual(_KndxIndex.HEADER + b"\nversion option 0 1 .%s :" % (utf8_revision_id,), call[1][1].getvalue()) self.assertEqual({'create_parent_dir': True}, call[2]) def test_keys(self): transport = MockTransport([ _KndxIndex.HEADER ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual(set(), index.keys()) index.add_records([((b"a",), [b"option"], ((b"a",), 0, 1), [])]) self.assertEqual({(b"a",)}, index.keys()) index.add_records([((b"a",), [b"option"], ((b"a",), 0, 1), [])]) self.assertEqual({(b"a",)}, index.keys()) index.add_records([((b"b",), [b"option"], ((b"b",), 0, 1), [])]) self.assertEqual({(b"a",), (b"b",)}, index.keys()) def add_a_b(self, index, random_id=None): kwargs = {} if random_id is not None: kwargs["random_id"] = random_id index.add_records([ ((b"a",), [b"option"], ((b"a",), 0, 1), [(b"b",)]), ((b"a",), [b"opt"], ((b"a",), 1, 2), [(b"c",)]), ((b"b",), [b"option"], ((b"b",), 2, 3), [(b"a",)]) ], **kwargs) def assertIndexIsAB(self, index): self.assertEqual({ (b'a',): ((b'c',),), (b'b',): ((b'a',),), }, index.get_parent_map(index.keys())) self.assertEqual(((b"a",), 1, 2), index.get_position((b"a",))) self.assertEqual(((b"b",), 2, 3), index.get_position((b"b",))) self.assertEqual([b"opt"], index.get_options((b"a",))) def test_add_versions(self): transport = MockTransport([ _KndxIndex.HEADER ]) index = self.get_knit_index(transport, "filename", "r") self.add_a_b(index) call = transport.calls.pop(0) # call[1][1] is a BytesIO - we can't test it by simple equality. self.assertEqual('put_file_non_atomic', call[0]) self.assertEqual('filename.kndx', call[1][0]) # With no history, _KndxIndex writes a new index: self.assertEqual( _KndxIndex.HEADER + b"\na option 0 1 .b :" b"\na opt 1 2 .c :" b"\nb option 2 3 0 :", call[1][1].getvalue()) self.assertEqual({'create_parent_dir': True}, call[2]) self.assertIndexIsAB(index) def test_add_versions_random_id_is_accepted(self): transport = MockTransport([ _KndxIndex.HEADER ]) index = self.get_knit_index(transport, "filename", "r") self.add_a_b(index, random_id=True) def test_delay_create_and_add_versions(self): transport = MockTransport() index = self.get_knit_index(transport, "filename", "w") # dir_mode=0777) self.assertEqual([], transport.calls) self.add_a_b(index) # self.assertEqual( # [ {"dir_mode": 0777, "create_parent_dir": True, "mode": "wb"}, # kwargs) # Two calls: one during which we load the existing index (and when its # missing create it), then a second where we write the contents out. self.assertEqual(2, len(transport.calls)) call = transport.calls.pop(0) self.assertEqual('put_file_non_atomic', call[0]) self.assertEqual('filename.kndx', call[1][0]) # With no history, _KndxIndex writes a new index: self.assertEqual(_KndxIndex.HEADER, call[1][1].getvalue()) self.assertEqual({'create_parent_dir': True}, call[2]) call = transport.calls.pop(0) # call[1][1] is a BytesIO - we can't test it by simple equality. self.assertEqual('put_file_non_atomic', call[0]) self.assertEqual('filename.kndx', call[1][0]) # With no history, _KndxIndex writes a new index: self.assertEqual( _KndxIndex.HEADER + b"\na option 0 1 .b :" b"\na opt 1 2 .c :" b"\nb option 2 3 0 :", call[1][1].getvalue()) self.assertEqual({'create_parent_dir': True}, call[2]) def assertTotalBuildSize(self, size, keys, positions): self.assertEqual(size, knit._get_total_build_size(None, keys, positions)) def test__get_total_build_size(self): positions = { (b'a',): (('fulltext', False), ((b'a',), 0, 100), None), (b'b',): (('line-delta', False), ((b'b',), 100, 21), (b'a',)), (b'c',): (('line-delta', False), ((b'c',), 121, 35), (b'b',)), (b'd',): (('line-delta', False), ((b'd',), 156, 12), (b'b',)), } self.assertTotalBuildSize(100, [(b'a',)], positions) self.assertTotalBuildSize(121, [(b'b',)], positions) # c needs both a & b self.assertTotalBuildSize(156, [(b'c',)], positions) # we shouldn't count 'b' twice self.assertTotalBuildSize(156, [(b'b',), (b'c',)], positions) self.assertTotalBuildSize(133, [(b'd',)], positions) self.assertTotalBuildSize(168, [(b'c',), (b'd',)], positions) def test_get_position(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 1 :", b"b option 1 2 :" ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual(((b"a",), 0, 1), index.get_position((b"a",))) self.assertEqual(((b"b",), 1, 2), index.get_position((b"b",))) def test_get_method(self): transport = MockTransport([ _KndxIndex.HEADER, b"a fulltext,unknown 0 1 :", b"b unknown,line-delta 1 2 :", b"c bad 3 4 :" ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual("fulltext", index.get_method(b"a")) self.assertEqual("line-delta", index.get_method(b"b")) self.assertRaises(knit.KnitIndexUnknownMethod, index.get_method, b"c") def test_get_options(self): transport = MockTransport([ _KndxIndex.HEADER, b"a opt1 0 1 :", b"b opt2,opt3 1 2 :" ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual([b"opt1"], index.get_options(b"a")) self.assertEqual([b"opt2", b"opt3"], index.get_options(b"b")) def test_get_parent_map(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 1 :", b"b option 1 2 0 .c :", b"c option 1 2 1 0 .e :" ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual({ (b"a",): (), (b"b",): ((b"a",), (b"c",)), (b"c",): ((b"b",), (b"a",), (b"e",)), }, index.get_parent_map(index.keys())) def test_impossible_parent(self): """Test we get KnitCorrupt if the parent couldn't possibly exist.""" transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 1 :", b"b option 0 1 4 :" # We don't have a 4th record ]) index = self.get_knit_index(transport, 'filename', 'r') self.assertRaises(KnitCorrupt, index.keys) def test_corrupted_parent(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 1 :", b"b option 0 1 :", b"c option 0 1 1v :", # Can't have a parent of '1v' ]) index = self.get_knit_index(transport, 'filename', 'r') self.assertRaises(KnitCorrupt, index.keys) def test_corrupted_parent_in_list(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 1 :", b"b option 0 1 :", b"c option 0 1 1 v :", # Can't have a parent of 'v' ]) index = self.get_knit_index(transport, 'filename', 'r') self.assertRaises(KnitCorrupt, index.keys) def test_invalid_position(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 1v 1 :", ]) index = self.get_knit_index(transport, 'filename', 'r') self.assertRaises(KnitCorrupt, index.keys) def test_invalid_size(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 1 1v :", ]) index = self.get_knit_index(transport, 'filename', 'r') self.assertRaises(KnitCorrupt, index.keys) def test_scan_unvalidated_index_not_implemented(self): transport = MockTransport() index = self.get_knit_index(transport, 'filename', 'r') self.assertRaises( NotImplementedError, index.scan_unvalidated_index, 'dummy graph_index') self.assertRaises( NotImplementedError, index.get_missing_compression_parents) def test_short_line(self): transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 10 :", b"b option 10 10 0", # This line isn't terminated, ignored ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual({(b'a',)}, index.keys()) def test_skip_incomplete_record(self): # A line with bogus data should just be skipped transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 10 :", b"b option 10 10 0", # This line isn't terminated, ignored b"c option 20 10 0 :", # Properly terminated, and starts with '\n' ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual({(b'a',), (b'c',)}, index.keys()) def test_trailing_characters(self): # A line with bogus data should just be skipped transport = MockTransport([ _KndxIndex.HEADER, b"a option 0 10 :", b"b option 10 10 0 :a", # This line has extra trailing characters b"c option 20 10 0 :", # Properly terminated, and starts with '\n' ]) index = self.get_knit_index(transport, "filename", "r") self.assertEqual({(b'a',), (b'c',)}, index.keys()) class LowLevelKnitIndexTests_c(LowLevelKnitIndexTests): _test_needs_features = [compiled_knit_feature] @property def _load_data(self): from ..bzr._knit_load_data_pyx import _load_data_c return _load_data_c class Test_KnitAnnotator(TestCaseWithMemoryTransport): def make_annotator(self): factory = knit.make_pack_factory(True, True, 1) vf = factory(self.get_transport()) return knit._KnitAnnotator(vf) def test__expand_fulltext(self): ann = self.make_annotator() rev_key = (b'rev-id',) ann._num_compression_children[rev_key] = 1 res = ann._expand_record(rev_key, ((b'parent-id',),), None, [b'line1\n', b'line2\n'], ('fulltext', True)) # The content object and text lines should be cached appropriately self.assertEqual([b'line1\n', b'line2'], res) content_obj = ann._content_objects[rev_key] self.assertEqual([b'line1\n', b'line2\n'], content_obj._lines) self.assertEqual(res, content_obj.text()) self.assertEqual(res, ann._text_cache[rev_key]) def test__expand_delta_comp_parent_not_available(self): # Parent isn't available yet, so we return nothing, but queue up this # node for later processing ann = self.make_annotator() rev_key = (b'rev-id',) parent_key = (b'parent-id',) record = [b'0,1,1\n', b'new-line\n'] details = ('line-delta', False) res = ann._expand_record(rev_key, (parent_key,), parent_key, record, details) self.assertEqual(None, res) self.assertTrue(parent_key in ann._pending_deltas) pending = ann._pending_deltas[parent_key] self.assertEqual(1, len(pending)) self.assertEqual((rev_key, (parent_key,), record, details), pending[0]) def test__expand_record_tracks_num_children(self): ann = self.make_annotator() rev_key = (b'rev-id',) rev2_key = (b'rev2-id',) parent_key = (b'parent-id',) record = [b'0,1,1\n', b'new-line\n'] details = ('line-delta', False) ann._num_compression_children[parent_key] = 2 ann._expand_record(parent_key, (), None, [b'line1\n', b'line2\n'], ('fulltext', False)) res = ann._expand_record(rev_key, (parent_key,), parent_key, record, details) self.assertEqual({parent_key: 1}, ann._num_compression_children) # Expanding the second child should remove the content object, and the # num_compression_children entry res = ann._expand_record(rev2_key, (parent_key,), parent_key, record, details) self.assertFalse(parent_key in ann._content_objects) self.assertEqual({}, ann._num_compression_children) # We should not cache the content_objects for rev2 and rev, because # they do not have compression children of their own. self.assertEqual({}, ann._content_objects) def test__expand_delta_records_blocks(self): ann = self.make_annotator() rev_key = (b'rev-id',) parent_key = (b'parent-id',) record = [b'0,1,1\n', b'new-line\n'] details = ('line-delta', True) ann._num_compression_children[parent_key] = 2 ann._expand_record(parent_key, (), None, [b'line1\n', b'line2\n', b'line3\n'], ('fulltext', False)) ann._expand_record(rev_key, (parent_key,), parent_key, record, details) self.assertEqual({(rev_key, parent_key): [(1, 1, 1), (3, 3, 0)]}, ann._matching_blocks) rev2_key = (b'rev2-id',) record = [b'0,1,1\n', b'new-line\n'] details = ('line-delta', False) ann._expand_record(rev2_key, (parent_key,), parent_key, record, details) self.assertEqual([(1, 1, 2), (3, 3, 0)], ann._matching_blocks[(rev2_key, parent_key)]) def test__get_parent_ann_uses_matching_blocks(self): ann = self.make_annotator() rev_key = (b'rev-id',) parent_key = (b'parent-id',) parent_ann = [(parent_key,)] * 3 block_key = (rev_key, parent_key) ann._annotations_cache[parent_key] = parent_ann ann._matching_blocks[block_key] = [(0, 1, 1), (3, 3, 0)] # We should not try to access any parent_lines content, because we know # we already have the matching blocks par_ann, blocks = ann._get_parent_annotations_and_matches(rev_key, [b'1\n', b'2\n', b'3\n'], parent_key) self.assertEqual(parent_ann, par_ann) self.assertEqual([(0, 1, 1), (3, 3, 0)], blocks) self.assertEqual({}, ann._matching_blocks) def test__process_pending(self): ann = self.make_annotator() rev_key = (b'rev-id',) p1_key = (b'p1-id',) p2_key = (b'p2-id',) record = [b'0,1,1\n', b'new-line\n'] details = ('line-delta', False) p1_record = [b'line1\n', b'line2\n'] ann._num_compression_children[p1_key] = 1 res = ann._expand_record(rev_key, (p1_key, p2_key), p1_key, record, details) self.assertEqual(None, res) # self.assertTrue(p1_key in ann._pending_deltas) self.assertEqual({}, ann._pending_annotation) # Now insert p1, and we should be able to expand the delta res = ann._expand_record(p1_key, (), None, p1_record, ('fulltext', False)) self.assertEqual(p1_record, res) ann._annotations_cache[p1_key] = [(p1_key,)] * 2 res = ann._process_pending(p1_key) self.assertEqual([], res) self.assertFalse(p1_key in ann._pending_deltas) self.assertTrue(p2_key in ann._pending_annotation) self.assertEqual({p2_key: [(rev_key, (p1_key, p2_key))]}, ann._pending_annotation) # Now fill in parent 2, and pending annotation should be satisfied res = ann._expand_record(p2_key, (), None, [], ('fulltext', False)) ann._annotations_cache[p2_key] = [] res = ann._process_pending(p2_key) self.assertEqual([rev_key], res) self.assertEqual({}, ann._pending_annotation) self.assertEqual({}, ann._pending_deltas) def test_record_delta_removes_basis(self): ann = self.make_annotator() ann._expand_record((b'parent-id',), (), None, [b'line1\n', b'line2\n'], ('fulltext', False)) ann._num_compression_children[b'parent-id'] = 2 def test_annotate_special_text(self): ann = self.make_annotator() vf = ann._vf rev1_key = (b'rev-1',) rev2_key = (b'rev-2',) rev3_key = (b'rev-3',) spec_key = (b'special:',) vf.add_lines(rev1_key, [], [b'initial content\n']) vf.add_lines(rev2_key, [rev1_key], [b'initial content\n', b'common content\n', b'content in 2\n']) vf.add_lines(rev3_key, [rev1_key], [b'initial content\n', b'common content\n', b'content in 3\n']) spec_text = (b'initial content\n' b'common content\n' b'content in 2\n' b'content in 3\n') ann.add_special_text(spec_key, [rev2_key, rev3_key], spec_text) anns, lines = ann.annotate(spec_key) self.assertEqual([(rev1_key,), (rev2_key, rev3_key), (rev2_key,), (rev3_key,), ], anns) self.assertEqualDiff(spec_text, b''.join(lines)) class KnitTests(TestCaseWithTransport): """Class containing knit test helper routines.""" def make_test_knit(self, annotate=False, name='test'): mapper = ConstantMapper(name) return make_file_factory(annotate, mapper)(self.get_transport()) class TestBadShaError(KnitTests): """Tests for handling of sha errors.""" def test_sha_exception_has_text(self): # having the failed text included in the error allows for recovery. source = self.make_test_knit() target = self.make_test_knit(name="target") if not source._max_delta_chain: raise TestNotApplicable( "cannot get delta-caused sha failures without deltas.") # create a basis basis = (b'basis',) broken = (b'broken',) source.add_lines(basis, (), [b'foo\n']) source.add_lines(broken, (basis,), [b'foo\n', b'bar\n']) # Seed target with a bad basis text target.add_lines(basis, (), [b'gam\n']) target.insert_record_stream( source.get_record_stream([broken], 'unordered', False)) err = self.assertRaises(KnitCorrupt, next(target.get_record_stream([broken], 'unordered', True )).get_bytes_as, 'chunked') self.assertEqual([b'gam\n', b'bar\n'], err.content) # Test for formatting with live data self.assertStartsWith(str(err), "Knit ") class TestKnitIndex(KnitTests): def test_add_versions_dictionary_compresses(self): """Adding versions to the index should update the lookup dict""" knit = self.make_test_knit() idx = knit._index idx.add_records([((b'a-1',), [b'fulltext'], ((b'a-1',), 0, 0), [])]) self.check_file_contents('test.kndx', b'# bzr knit index 8\n' b'\n' b'a-1 fulltext 0 0 :' ) idx.add_records([ ((b'a-2',), [b'fulltext'], ((b'a-2',), 0, 0), [(b'a-1',)]), ((b'a-3',), [b'fulltext'], ((b'a-3',), 0, 0), [(b'a-2',)]), ]) self.check_file_contents('test.kndx', b'# bzr knit index 8\n' b'\n' b'a-1 fulltext 0 0 :\n' b'a-2 fulltext 0 0 0 :\n' b'a-3 fulltext 0 0 1 :' ) self.assertEqual({(b'a-3',), (b'a-1',), (b'a-2',)}, idx.keys()) self.assertEqual({ (b'a-1',): (((b'a-1',), 0, 0), None, (), ('fulltext', False)), (b'a-2',): (((b'a-2',), 0, 0), None, ((b'a-1',),), ('fulltext', False)), (b'a-3',): (((b'a-3',), 0, 0), None, ((b'a-2',),), ('fulltext', False)), }, idx.get_build_details(idx.keys())) self.assertEqual({(b'a-1',): (), (b'a-2',): ((b'a-1',),), (b'a-3',): ((b'a-2',),), }, idx.get_parent_map(idx.keys())) def test_add_versions_fails_clean(self): """If add_versions fails in the middle, it restores a pristine state. Any modifications that are made to the index are reset if all versions cannot be added. """ # This cheats a little bit by passing in a generator which will # raise an exception before the processing finishes # Other possibilities would be to have an version with the wrong number # of entries, or to make the backing transport unable to write any # files. knit = self.make_test_knit() idx = knit._index idx.add_records([((b'a-1',), [b'fulltext'], ((b'a-1',), 0, 0), [])]) class StopEarly(Exception): pass def generate_failure(): """Add some entries and then raise an exception""" yield ((b'a-2',), [b'fulltext'], (None, 0, 0), (b'a-1',)) yield ((b'a-3',), [b'fulltext'], (None, 0, 0), (b'a-2',)) raise StopEarly() # Assert the pre-condition def assertA1Only(): self.assertEqual({(b'a-1',)}, set(idx.keys())) self.assertEqual( {(b'a-1',): (((b'a-1',), 0, 0), None, (), ('fulltext', False))}, idx.get_build_details([(b'a-1',)])) self.assertEqual({(b'a-1',): ()}, idx.get_parent_map(idx.keys())) assertA1Only() self.assertRaises(StopEarly, idx.add_records, generate_failure()) # And it shouldn't be modified assertA1Only() def test_knit_index_ignores_empty_files(self): # There was a race condition in older bzr, where a ^C at the right time # could leave an empty .kndx file, which bzr would later claim was a # corrupted file since the header was not present. In reality, the file # just wasn't created, so it should be ignored. t = transport.get_transport_from_path('.') t.put_bytes('test.kndx', b'') knit = self.make_test_knit() def test_knit_index_checks_header(self): t = transport.get_transport_from_path('.') t.put_bytes('test.kndx', b'# not really a knit header\n\n') k = self.make_test_knit() self.assertRaises(KnitHeaderError, k.keys) class TestGraphIndexKnit(KnitTests): """Tests for knits using a GraphIndex rather than a KnitIndex.""" def make_g_index(self, name, ref_lists=0, nodes=[]): builder = GraphIndexBuilder(ref_lists) for node, references, value in nodes: builder.add_node(node, references, value) stream = builder.finish() trans = self.get_transport() size = trans.put_file(name, stream) return GraphIndex(trans, name, size) def two_graph_index(self, deltas=False, catch_adds=False): """Build a two-graph index. :param deltas: If true, use underlying indices with two node-ref lists and 'parent' set to a delta-compressed against tail. """ # build a complex graph across several indices. if deltas: # delta compression inn the index index1 = self.make_g_index('1', 2, [ ((b'tip', ), b'N0 100', ([(b'parent', )], [], )), ((b'tail', ), b'', ([], []))]) index2 = self.make_g_index('2', 2, [ ((b'parent', ), b' 100 78', ([(b'tail', ), (b'ghost', )], [(b'tail', )])), ((b'separate', ), b'', ([], []))]) else: # just blob location and graph in the index. index1 = self.make_g_index('1', 1, [ ((b'tip', ), b'N0 100', ([(b'parent', )], )), ((b'tail', ), b'', ([], ))]) index2 = self.make_g_index('2', 1, [ ((b'parent', ), b' 100 78', ([(b'tail', ), (b'ghost', )], )), ((b'separate', ), b'', ([], ))]) combined_index = CombinedGraphIndex([index1, index2]) if catch_adds: self.combined_index = combined_index self.caught_entries = [] add_callback = self.catch_add else: add_callback = None return _KnitGraphIndex(combined_index, lambda: True, deltas=deltas, add_callback=add_callback) def test_keys(self): index = self.two_graph_index() self.assertEqual({(b'tail',), (b'tip',), (b'parent',), (b'separate',)}, set(index.keys())) def test_get_position(self): index = self.two_graph_index() self.assertEqual( (index._graph_index._indices[0], 0, 100), index.get_position((b'tip',))) self.assertEqual( (index._graph_index._indices[1], 100, 78), index.get_position((b'parent',))) def test_get_method_deltas(self): index = self.two_graph_index(deltas=True) self.assertEqual('fulltext', index.get_method((b'tip',))) self.assertEqual('line-delta', index.get_method((b'parent',))) def test_get_method_no_deltas(self): # check that the parent-history lookup is ignored with deltas=False. index = self.two_graph_index(deltas=False) self.assertEqual('fulltext', index.get_method((b'tip',))) self.assertEqual('fulltext', index.get_method((b'parent',))) def test_get_options_deltas(self): index = self.two_graph_index(deltas=True) self.assertEqual([b'fulltext', b'no-eol'], index.get_options((b'tip',))) self.assertEqual([b'line-delta'], index.get_options((b'parent',))) def test_get_options_no_deltas(self): # check that the parent-history lookup is ignored with deltas=False. index = self.two_graph_index(deltas=False) self.assertEqual([b'fulltext', b'no-eol'], index.get_options((b'tip',))) self.assertEqual([b'fulltext'], index.get_options((b'parent',))) def test_get_parent_map(self): index = self.two_graph_index() self.assertEqual({(b'parent',): ((b'tail',), (b'ghost',))}, index.get_parent_map([(b'parent',), (b'ghost',)])) def catch_add(self, entries): self.caught_entries.append(entries) def test_add_no_callback_errors(self): index = self.two_graph_index() self.assertRaises(errors.ReadOnlyError, index.add_records, [((b'new',), b'fulltext,no-eol', (None, 50, 60), [b'separate'])]) def test_add_version_smoke(self): index = self.two_graph_index(catch_adds=True) index.add_records([((b'new',), b'fulltext,no-eol', (None, 50, 60), [(b'separate',)])]) self.assertEqual([[((b'new', ), b'N50 60', (((b'separate',),),))]], self.caught_entries) def test_add_version_delta_not_delta_index(self): index = self.two_graph_index(catch_adds=True) self.assertRaises(KnitCorrupt, index.add_records, [((b'new',), b'no-eol,line-delta', (None, 0, 100), [(b'parent',)])]) self.assertEqual([], self.caught_entries) def test_add_version_same_dup(self): index = self.two_graph_index(catch_adds=True) # options can be spelt two different ways index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [(b'parent',)])]) index.add_records( [((b'tip',), b'no-eol,fulltext', (None, 0, 100), [(b'parent',)])]) # position/length are ignored (because each pack could have fulltext or # delta, and be at a different position. index.add_records([((b'tip',), b'fulltext,no-eol', (None, 50, 100), [(b'parent',)])]) index.add_records([((b'tip',), b'fulltext,no-eol', (None, 0, 1000), [(b'parent',)])]) # but neither should have added data: self.assertEqual([[], [], [], []], self.caught_entries) def test_add_version_different_dup(self): index = self.two_graph_index(deltas=True, catch_adds=True) # change options self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'line-delta', (None, 0, 100), [(b'parent',)])]) self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext', (None, 0, 100), [(b'parent',)])]) # parents self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [])]) self.assertEqual([], self.caught_entries) def test_add_versions_nodeltas(self): index = self.two_graph_index(catch_adds=True) index.add_records([ ((b'new',), b'fulltext,no-eol', (None, 50, 60), [(b'separate',)]), ((b'new2',), b'fulltext', (None, 0, 6), [(b'new',)]), ]) self.assertEqual([((b'new', ), b'N50 60', (((b'separate',),),)), ((b'new2', ), b' 0 6', (((b'new',),),))], sorted(self.caught_entries[0])) self.assertEqual(1, len(self.caught_entries)) def test_add_versions_deltas(self): index = self.two_graph_index(deltas=True, catch_adds=True) index.add_records([ ((b'new',), b'fulltext,no-eol', (None, 50, 60), [(b'separate',)]), ((b'new2',), b'line-delta', (None, 0, 6), [(b'new',)]), ]) self.assertEqual([((b'new', ), b'N50 60', (((b'separate',),), ())), ((b'new2', ), b' 0 6', (((b'new',),), ((b'new',),), ))], sorted(self.caught_entries[0])) self.assertEqual(1, len(self.caught_entries)) def test_add_versions_delta_not_delta_index(self): index = self.two_graph_index(catch_adds=True) self.assertRaises(KnitCorrupt, index.add_records, [((b'new',), b'no-eol,line-delta', (None, 0, 100), [(b'parent',)])]) self.assertEqual([], self.caught_entries) def test_add_versions_random_id_accepted(self): index = self.two_graph_index(catch_adds=True) index.add_records([], random_id=True) def test_add_versions_same_dup(self): index = self.two_graph_index(catch_adds=True) # options can be spelt two different ways index.add_records([((b'tip',), b'fulltext,no-eol', (None, 0, 100), [(b'parent',)])]) index.add_records([((b'tip',), b'no-eol,fulltext', (None, 0, 100), [(b'parent',)])]) # position/length are ignored (because each pack could have fulltext or # delta, and be at a different position. index.add_records([((b'tip',), b'fulltext,no-eol', (None, 50, 100), [(b'parent',)])]) index.add_records([((b'tip',), b'fulltext,no-eol', (None, 0, 1000), [(b'parent',)])]) # but neither should have added data. self.assertEqual([[], [], [], []], self.caught_entries) def test_add_versions_different_dup(self): index = self.two_graph_index(deltas=True, catch_adds=True) # change options self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'line-delta', (None, 0, 100), [(b'parent',)])]) self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext', (None, 0, 100), [(b'parent',)])]) # parents self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [])]) # change options in the second record self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [(b'parent',)]), ((b'tip',), b'line-delta', (None, 0, 100), [(b'parent',)])]) self.assertEqual([], self.caught_entries) def make_g_index_missing_compression_parent(self): graph_index = self.make_g_index('missing_comp', 2, [((b'tip', ), b' 100 78', ([(b'missing-parent', ), (b'ghost', )], [(b'missing-parent', )]))]) return graph_index def make_g_index_missing_parent(self): graph_index = self.make_g_index('missing_parent', 2, [((b'parent', ), b' 100 78', ([], [])), ((b'tip', ), b' 100 78', ([(b'parent', ), (b'missing-parent', )], [(b'parent', )])), ]) return graph_index def make_g_index_no_external_refs(self): graph_index = self.make_g_index('no_external_refs', 2, [((b'rev', ), b' 100 78', ([(b'parent', ), (b'ghost', )], []))]) return graph_index def test_add_good_unvalidated_index(self): unvalidated = self.make_g_index_no_external_refs() combined = CombinedGraphIndex([unvalidated]) index = _KnitGraphIndex(combined, lambda: True, deltas=True) index.scan_unvalidated_index(unvalidated) self.assertEqual(frozenset(), index.get_missing_compression_parents()) def test_add_missing_compression_parent_unvalidated_index(self): unvalidated = self.make_g_index_missing_compression_parent() combined = CombinedGraphIndex([unvalidated]) index = _KnitGraphIndex(combined, lambda: True, deltas=True) index.scan_unvalidated_index(unvalidated) # This also checks that its only the compression parent that is # examined, otherwise 'ghost' would also be reported as a missing # parent. self.assertEqual( frozenset([(b'missing-parent',)]), index.get_missing_compression_parents()) def test_add_missing_noncompression_parent_unvalidated_index(self): unvalidated = self.make_g_index_missing_parent() combined = CombinedGraphIndex([unvalidated]) index = _KnitGraphIndex(combined, lambda: True, deltas=True, track_external_parent_refs=True) index.scan_unvalidated_index(unvalidated) self.assertEqual( frozenset([(b'missing-parent',)]), index.get_missing_parents()) def test_track_external_parent_refs(self): g_index = self.make_g_index('empty', 2, []) combined = CombinedGraphIndex([g_index]) index = _KnitGraphIndex(combined, lambda: True, deltas=True, add_callback=self.catch_add, track_external_parent_refs=True) self.caught_entries = [] index.add_records([ ((b'new-key',), b'fulltext,no-eol', (None, 50, 60), [(b'parent-1',), (b'parent-2',)])]) self.assertEqual( frozenset([(b'parent-1',), (b'parent-2',)]), index.get_missing_parents()) def test_add_unvalidated_index_with_present_external_references(self): index = self.two_graph_index(deltas=True) # Ugly hack to get at one of the underlying GraphIndex objects that # two_graph_index built. unvalidated = index._graph_index._indices[1] # 'parent' is an external ref of _indices[1] (unvalidated), but is # present in _indices[0]. index.scan_unvalidated_index(unvalidated) self.assertEqual(frozenset(), index.get_missing_compression_parents()) def make_new_missing_parent_g_index(self, name): missing_parent = name.encode('ascii') + b'-missing-parent' graph_index = self.make_g_index(name, 2, [((name.encode('ascii') + b'tip', ), b' 100 78', ([(missing_parent, ), (b'ghost', )], [(missing_parent, )]))]) return graph_index def test_add_mulitiple_unvalidated_indices_with_missing_parents(self): g_index_1 = self.make_new_missing_parent_g_index('one') g_index_2 = self.make_new_missing_parent_g_index('two') combined = CombinedGraphIndex([g_index_1, g_index_2]) index = _KnitGraphIndex(combined, lambda: True, deltas=True) index.scan_unvalidated_index(g_index_1) index.scan_unvalidated_index(g_index_2) self.assertEqual( frozenset([(b'one-missing-parent',), (b'two-missing-parent',)]), index.get_missing_compression_parents()) def test_add_mulitiple_unvalidated_indices_with_mutual_dependencies(self): graph_index_a = self.make_g_index('one', 2, [((b'parent-one', ), b' 100 78', ([(b'non-compression-parent',)], [])), ((b'child-of-two', ), b' 100 78', ([(b'parent-two',)], [(b'parent-two',)]))]) graph_index_b = self.make_g_index('two', 2, [((b'parent-two', ), b' 100 78', ([(b'non-compression-parent',)], [])), ((b'child-of-one', ), b' 100 78', ([(b'parent-one',)], [(b'parent-one',)]))]) combined = CombinedGraphIndex([graph_index_a, graph_index_b]) index = _KnitGraphIndex(combined, lambda: True, deltas=True) index.scan_unvalidated_index(graph_index_a) index.scan_unvalidated_index(graph_index_b) self.assertEqual( frozenset([]), index.get_missing_compression_parents()) class TestNoParentsGraphIndexKnit(KnitTests): """Tests for knits using _KnitGraphIndex with no parents.""" def make_g_index(self, name, ref_lists=0, nodes=[]): builder = GraphIndexBuilder(ref_lists) for node, references in nodes: builder.add_node(node, references) stream = builder.finish() trans = self.get_transport() size = trans.put_file(name, stream) return GraphIndex(trans, name, size) def test_add_good_unvalidated_index(self): unvalidated = self.make_g_index('unvalidated') combined = CombinedGraphIndex([unvalidated]) index = _KnitGraphIndex(combined, lambda: True, parents=False) index.scan_unvalidated_index(unvalidated) self.assertEqual(frozenset(), index.get_missing_compression_parents()) def test_parents_deltas_incompatible(self): index = CombinedGraphIndex([]) self.assertRaises(knit.KnitError, _KnitGraphIndex, lambda: True, index, deltas=True, parents=False) def two_graph_index(self, catch_adds=False): """Build a two-graph index. :param deltas: If true, use underlying indices with two node-ref lists and 'parent' set to a delta-compressed against tail. """ # put several versions in the index. index1 = self.make_g_index('1', 0, [ ((b'tip', ), b'N0 100'), ((b'tail', ), b'')]) index2 = self.make_g_index('2', 0, [ ((b'parent', ), b' 100 78'), ((b'separate', ), b'')]) combined_index = CombinedGraphIndex([index1, index2]) if catch_adds: self.combined_index = combined_index self.caught_entries = [] add_callback = self.catch_add else: add_callback = None return _KnitGraphIndex(combined_index, lambda: True, parents=False, add_callback=add_callback) def test_keys(self): index = self.two_graph_index() self.assertEqual({(b'tail',), (b'tip',), (b'parent',), (b'separate',)}, set(index.keys())) def test_get_position(self): index = self.two_graph_index() self.assertEqual((index._graph_index._indices[0], 0, 100), index.get_position((b'tip',))) self.assertEqual((index._graph_index._indices[1], 100, 78), index.get_position((b'parent',))) def test_get_method(self): index = self.two_graph_index() self.assertEqual('fulltext', index.get_method((b'tip',))) self.assertEqual([b'fulltext'], index.get_options((b'parent',))) def test_get_options(self): index = self.two_graph_index() self.assertEqual([b'fulltext', b'no-eol'], index.get_options((b'tip',))) self.assertEqual([b'fulltext'], index.get_options((b'parent',))) def test_get_parent_map(self): index = self.two_graph_index() self.assertEqual({(b'parent',): None}, index.get_parent_map([(b'parent',), (b'ghost',)])) def catch_add(self, entries): self.caught_entries.append(entries) def test_add_no_callback_errors(self): index = self.two_graph_index() self.assertRaises(errors.ReadOnlyError, index.add_records, [((b'new',), b'fulltext,no-eol', (None, 50, 60), [(b'separate',)])]) def test_add_version_smoke(self): index = self.two_graph_index(catch_adds=True) index.add_records( [((b'new',), b'fulltext,no-eol', (None, 50, 60), [])]) self.assertEqual([[((b'new', ), b'N50 60')]], self.caught_entries) def test_add_version_delta_not_delta_index(self): index = self.two_graph_index(catch_adds=True) self.assertRaises(KnitCorrupt, index.add_records, [((b'new',), b'no-eol,line-delta', (None, 0, 100), [])]) self.assertEqual([], self.caught_entries) def test_add_version_same_dup(self): index = self.two_graph_index(catch_adds=True) # options can be spelt two different ways index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [])]) index.add_records( [((b'tip',), b'no-eol,fulltext', (None, 0, 100), [])]) # position/length are ignored (because each pack could have fulltext or # delta, and be at a different position. index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 50, 100), [])]) index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 0, 1000), [])]) # but neither should have added data. self.assertEqual([[], [], [], []], self.caught_entries) def test_add_version_different_dup(self): index = self.two_graph_index(catch_adds=True) # change options self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'no-eol,line-delta', (None, 0, 100), [])]) self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'line-delta,no-eol', (None, 0, 100), [])]) self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext', (None, 0, 100), [])]) # parents self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [(b'parent',)])]) self.assertEqual([], self.caught_entries) def test_add_versions(self): index = self.two_graph_index(catch_adds=True) index.add_records([ ((b'new',), b'fulltext,no-eol', (None, 50, 60), []), ((b'new2',), b'fulltext', (None, 0, 6), []), ]) self.assertEqual([((b'new', ), b'N50 60'), ((b'new2', ), b' 0 6')], sorted(self.caught_entries[0])) self.assertEqual(1, len(self.caught_entries)) def test_add_versions_delta_not_delta_index(self): index = self.two_graph_index(catch_adds=True) self.assertRaises(KnitCorrupt, index.add_records, [((b'new',), b'no-eol,line-delta', (None, 0, 100), [(b'parent',)])]) self.assertEqual([], self.caught_entries) def test_add_versions_parents_not_parents_index(self): index = self.two_graph_index(catch_adds=True) self.assertRaises(KnitCorrupt, index.add_records, [((b'new',), b'no-eol,fulltext', (None, 0, 100), [(b'parent',)])]) self.assertEqual([], self.caught_entries) def test_add_versions_random_id_accepted(self): index = self.two_graph_index(catch_adds=True) index.add_records([], random_id=True) def test_add_versions_same_dup(self): index = self.two_graph_index(catch_adds=True) # options can be spelt two different ways index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [])]) index.add_records( [((b'tip',), b'no-eol,fulltext', (None, 0, 100), [])]) # position/length are ignored (because each pack could have fulltext or # delta, and be at a different position. index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 50, 100), [])]) index.add_records( [((b'tip',), b'fulltext,no-eol', (None, 0, 1000), [])]) # but neither should have added data. self.assertEqual([[], [], [], []], self.caught_entries) def test_add_versions_different_dup(self): index = self.two_graph_index(catch_adds=True) # change options self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'no-eol,line-delta', (None, 0, 100), [])]) self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'line-delta,no-eol', (None, 0, 100), [])]) self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext', (None, 0, 100), [])]) # parents self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext,no-eol', (None, 0, 100), [(b'parent',)])]) # change options in the second record self.assertRaises(KnitCorrupt, index.add_records, [((b'tip',), b'fulltext,no-eol', (None, 0, 100), []), ((b'tip',), b'no-eol,line-delta', (None, 0, 100), [])]) self.assertEqual([], self.caught_entries) class TestKnitVersionedFiles(KnitTests): def assertGroupKeysForIo(self, exp_groups, keys, non_local_keys, positions, _min_buffer_size=None): kvf = self.make_test_knit() if _min_buffer_size is None: _min_buffer_size = knit._STREAM_MIN_BUFFER_SIZE self.assertEqual(exp_groups, kvf._group_keys_for_io(keys, non_local_keys, positions, _min_buffer_size=_min_buffer_size)) def assertSplitByPrefix(self, expected_map, expected_prefix_order, keys): split, prefix_order = KnitVersionedFiles._split_by_prefix(keys) self.assertEqual(expected_map, split) self.assertEqual(expected_prefix_order, prefix_order) def test__group_keys_for_io(self): ft_detail = ('fulltext', False) ld_detail = ('line-delta', False) f_a = (b'f', b'a') f_b = (b'f', b'b') f_c = (b'f', b'c') g_a = (b'g', b'a') g_b = (b'g', b'b') g_c = (b'g', b'c') positions = { f_a: (ft_detail, (f_a, 0, 100), None), f_b: (ld_detail, (f_b, 100, 21), f_a), f_c: (ld_detail, (f_c, 180, 15), f_b), g_a: (ft_detail, (g_a, 121, 35), None), g_b: (ld_detail, (g_b, 156, 12), g_a), g_c: (ld_detail, (g_c, 195, 13), g_a), } self.assertGroupKeysForIo([([f_a], set())], [f_a], [], positions) self.assertGroupKeysForIo([([f_a], {f_a})], [f_a], [f_a], positions) self.assertGroupKeysForIo([([f_a, f_b], set([]))], [f_a, f_b], [], positions) self.assertGroupKeysForIo([([f_a, f_b], {f_b})], [f_a, f_b], [f_b], positions) self.assertGroupKeysForIo([([f_a, f_b, g_a, g_b], set())], [f_a, g_a, f_b, g_b], [], positions) self.assertGroupKeysForIo([([f_a, f_b, g_a, g_b], set())], [f_a, g_a, f_b, g_b], [], positions, _min_buffer_size=150) self.assertGroupKeysForIo([([f_a, f_b], set()), ([g_a, g_b], set())], [f_a, g_a, f_b, g_b], [], positions, _min_buffer_size=100) self.assertGroupKeysForIo([([f_c], set()), ([g_b], set())], [f_c, g_b], [], positions, _min_buffer_size=125) self.assertGroupKeysForIo([([g_b, f_c], set())], [g_b, f_c], [], positions, _min_buffer_size=125) def test__split_by_prefix(self): self.assertSplitByPrefix({b'f': [(b'f', b'a'), (b'f', b'b')], b'g': [(b'g', b'b'), (b'g', b'a')], }, [b'f', b'g'], [(b'f', b'a'), (b'g', b'b'), (b'g', b'a'), (b'f', b'b')]) self.assertSplitByPrefix({b'f': [(b'f', b'a'), (b'f', b'b')], b'g': [(b'g', b'b'), (b'g', b'a')], }, [b'f', b'g'], [(b'f', b'a'), (b'f', b'b'), (b'g', b'b'), (b'g', b'a')]) self.assertSplitByPrefix({b'f': [(b'f', b'a'), (b'f', b'b')], b'g': [(b'g', b'b'), (b'g', b'a')], }, [b'f', b'g'], [(b'f', b'a'), (b'f', b'b'), (b'g', b'b'), (b'g', b'a')]) self.assertSplitByPrefix({b'f': [(b'f', b'a'), (b'f', b'b')], b'g': [(b'g', b'b'), (b'g', b'a')], b'': [(b'a',), (b'b',)] }, [b'f', b'g', b''], [(b'f', b'a'), (b'g', b'b'), (b'a',), (b'b',), (b'g', b'a'), (b'f', b'b')]) class TestStacking(KnitTests): def get_basis_and_test_knit(self): basis = self.make_test_knit(name='basis') basis = RecordingVersionedFilesDecorator(basis) test = self.make_test_knit(name='test') test.add_fallback_versioned_files(basis) return basis, test def test_add_fallback_versioned_files(self): basis = self.make_test_knit(name='basis') test = self.make_test_knit(name='test') # It must not error; other tests test that the fallback is referred to # when accessing data. test.add_fallback_versioned_files(basis) def test_add_lines(self): # lines added to the test are not added to the basis basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_cross_border = (b'quux',) key_delta = (b'zaphod',) test.add_lines(key, (), [b'foo\n']) self.assertEqual({}, basis.get_parent_map([key])) # lines added to the test that reference across the stack do a # fulltext. basis.add_lines(key_basis, (), [b'foo\n']) basis.calls = [] test.add_lines(key_cross_border, (key_basis,), [b'foo\n']) self.assertEqual('fulltext', test._index.get_method(key_cross_border)) # we don't even need to look at the basis to see that this should be # stored as a fulltext self.assertEqual([], basis.calls) # Subsequent adds do delta. basis.calls = [] test.add_lines(key_delta, (key_cross_border,), [b'foo\n']) self.assertEqual('line-delta', test._index.get_method(key_delta)) self.assertEqual([], basis.calls) def test_annotate(self): # annotations from the test knit are answered without asking the basis basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) test.add_lines(key, (), [b'foo\n']) details = test.annotate(key) self.assertEqual([(key, b'foo\n')], details) self.assertEqual([], basis.calls) # But texts that are not in the test knit are looked for in the basis # directly. basis.add_lines(key_basis, (), [b'foo\n', b'bar\n']) basis.calls = [] details = test.annotate(key_basis) self.assertEqual( [(key_basis, b'foo\n'), (key_basis, b'bar\n')], details) # Not optimised to date: # self.assertEqual([("annotate", key_basis)], basis.calls) self.assertEqual([('get_parent_map', {key_basis}), ('get_parent_map', {key_basis}), ('get_record_stream', [key_basis], 'topological', True)], basis.calls) def test_check(self): # At the moment checking a stacked knit does implicitly check the # fallback files. basis, test = self.get_basis_and_test_knit() test.check() def test_get_parent_map(self): # parents in the test knit are answered without asking the basis basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_missing = (b'missing',) test.add_lines(key, (), []) parent_map = test.get_parent_map([key]) self.assertEqual({key: ()}, parent_map) self.assertEqual([], basis.calls) # But parents that are not in the test knit are looked for in the basis basis.add_lines(key_basis, (), []) basis.calls = [] parent_map = test.get_parent_map([key, key_basis, key_missing]) self.assertEqual({key: (), key_basis: ()}, parent_map) self.assertEqual([("get_parent_map", {key_basis, key_missing})], basis.calls) def test_get_record_stream_unordered_fulltexts(self): # records from the test knit are answered without asking the basis: basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_missing = (b'missing',) test.add_lines(key, (), [b'foo\n']) records = list(test.get_record_stream([key], 'unordered', True)) self.assertEqual(1, len(records)) self.assertEqual([], basis.calls) # Missing (from test knit) objects are retrieved from the basis: basis.add_lines(key_basis, (), [b'foo\n', b'bar\n']) basis.calls = [] records = list(test.get_record_stream([key_basis, key_missing], 'unordered', True)) self.assertEqual(2, len(records)) calls = list(basis.calls) for record in records: self.assertSubset([record.key], (key_basis, key_missing)) if record.key == key_missing: self.assertIsInstance(record, AbsentContentFactory) else: reference = list(basis.get_record_stream([key_basis], 'unordered', True))[0] self.assertEqual(reference.key, record.key) self.assertEqual(reference.sha1, record.sha1) self.assertEqual(reference.storage_kind, record.storage_kind) self.assertEqual(reference.get_bytes_as(reference.storage_kind), record.get_bytes_as(record.storage_kind)) self.assertEqual(reference.get_bytes_as('fulltext'), record.get_bytes_as('fulltext')) # It's not strictly minimal, but it seems reasonable for now for it to # ask which fallbacks have which parents. self.assertEqual([ ("get_parent_map", {key_basis, key_missing}), ("get_record_stream", [key_basis], 'unordered', True)], calls) def test_get_record_stream_ordered_fulltexts(self): # ordering is preserved down into the fallback store. basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_basis_2 = (b'quux',) key_missing = (b'missing',) test.add_lines(key, (key_basis,), [b'foo\n']) # Missing (from test knit) objects are retrieved from the basis: basis.add_lines(key_basis, (key_basis_2,), [b'foo\n', b'bar\n']) basis.add_lines(key_basis_2, (), [b'quux\n']) basis.calls = [] # ask for in non-topological order records = list(test.get_record_stream( [key, key_basis, key_missing, key_basis_2], 'topological', True)) self.assertEqual(4, len(records)) results = [] for record in records: self.assertSubset([record.key], (key_basis, key_missing, key_basis_2, key)) if record.key == key_missing: self.assertIsInstance(record, AbsentContentFactory) else: results.append((record.key, record.sha1, record.storage_kind, record.get_bytes_as('fulltext'))) calls = list(basis.calls) order = [record[0] for record in results] self.assertEqual([key_basis_2, key_basis, key], order) for result in results: if result[0] == key: source = test else: source = basis record = next(source.get_record_stream([result[0]], 'unordered', True)) self.assertEqual(record.key, result[0]) self.assertEqual(record.sha1, result[1]) # We used to check that the storage kind matched, but actually it # depends on whether it was sourced from the basis, or in a single # group, because asking for full texts returns proxy objects to a # _ContentMapGenerator object; so checking the kind is unneeded. self.assertEqual(record.get_bytes_as('fulltext'), result[3]) # It's not strictly minimal, but it seems reasonable for now for it to # ask which fallbacks have which parents. self.assertEqual(2, len(calls)) self.assertEqual( ("get_parent_map", {key_basis, key_basis_2, key_missing}), calls[0]) # topological is requested from the fallback, because that is what # was requested at the top level. self.assertIn( calls[1], [ ("get_record_stream", [key_basis_2, key_basis], 'topological', True), ("get_record_stream", [key_basis, key_basis_2], 'topological', True)]) def test_get_record_stream_unordered_deltas(self): # records from the test knit are answered without asking the basis: basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_missing = (b'missing',) test.add_lines(key, (), [b'foo\n']) records = list(test.get_record_stream([key], 'unordered', False)) self.assertEqual(1, len(records)) self.assertEqual([], basis.calls) # Missing (from test knit) objects are retrieved from the basis: basis.add_lines(key_basis, (), [b'foo\n', b'bar\n']) basis.calls = [] records = list(test.get_record_stream([key_basis, key_missing], 'unordered', False)) self.assertEqual(2, len(records)) calls = list(basis.calls) for record in records: self.assertSubset([record.key], (key_basis, key_missing)) if record.key == key_missing: self.assertIsInstance(record, AbsentContentFactory) else: reference = list(basis.get_record_stream([key_basis], 'unordered', False))[0] self.assertEqual(reference.key, record.key) self.assertEqual(reference.sha1, record.sha1) self.assertEqual(reference.storage_kind, record.storage_kind) self.assertEqual(reference.get_bytes_as(reference.storage_kind), record.get_bytes_as(record.storage_kind)) # It's not strictly minimal, but it seems reasonable for now for it to # ask which fallbacks have which parents. self.assertEqual([ ("get_parent_map", {key_basis, key_missing}), ("get_record_stream", [key_basis], 'unordered', False)], calls) def test_get_record_stream_ordered_deltas(self): # ordering is preserved down into the fallback store. basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_basis_2 = (b'quux',) key_missing = (b'missing',) test.add_lines(key, (key_basis,), [b'foo\n']) # Missing (from test knit) objects are retrieved from the basis: basis.add_lines(key_basis, (key_basis_2,), [b'foo\n', b'bar\n']) basis.add_lines(key_basis_2, (), [b'quux\n']) basis.calls = [] # ask for in non-topological order records = list(test.get_record_stream( [key, key_basis, key_missing, key_basis_2], 'topological', False)) self.assertEqual(4, len(records)) results = [] for record in records: self.assertSubset([record.key], (key_basis, key_missing, key_basis_2, key)) if record.key == key_missing: self.assertIsInstance(record, AbsentContentFactory) else: results.append((record.key, record.sha1, record.storage_kind, record.get_bytes_as(record.storage_kind))) calls = list(basis.calls) order = [record[0] for record in results] self.assertEqual([key_basis_2, key_basis, key], order) for result in results: if result[0] == key: source = test else: source = basis record = next(source.get_record_stream([result[0]], 'unordered', False)) self.assertEqual(record.key, result[0]) self.assertEqual(record.sha1, result[1]) self.assertEqual(record.storage_kind, result[2]) self.assertEqual(record.get_bytes_as( record.storage_kind), result[3]) # It's not strictly minimal, but it seems reasonable for now for it to # ask which fallbacks have which parents. self.assertEqual([ ("get_parent_map", {key_basis, key_basis_2, key_missing}), ("get_record_stream", [key_basis_2, key_basis], 'topological', False)], calls) def test_get_sha1s(self): # sha1's in the test knit are answered without asking the basis basis, test = self.get_basis_and_test_knit() key = (b'foo',) key_basis = (b'bar',) key_missing = (b'missing',) test.add_lines(key, (), [b'foo\n']) key_sha1sum = osutils.sha_string(b'foo\n') sha1s = test.get_sha1s([key]) self.assertEqual({key: key_sha1sum}, sha1s) self.assertEqual([], basis.calls) # But texts that are not in the test knit are looked for in the basis # directly (rather than via text reconstruction) so that remote servers # etc don't have to answer with full content. basis.add_lines(key_basis, (), [b'foo\n', b'bar\n']) basis_sha1sum = osutils.sha_string(b'foo\nbar\n') basis.calls = [] sha1s = test.get_sha1s([key, key_missing, key_basis]) self.assertEqual({key: key_sha1sum, key_basis: basis_sha1sum}, sha1s) self.assertEqual([("get_sha1s", {key_basis, key_missing})], basis.calls) def test_insert_record_stream(self): # records are inserted as normal; insert_record_stream builds on # add_lines, so a smoke test should be all that's needed: key_basis = (b'bar',) key_delta = (b'zaphod',) basis, test = self.get_basis_and_test_knit() source = self.make_test_knit(name='source') basis.add_lines(key_basis, (), [b'foo\n']) basis.calls = [] source.add_lines(key_basis, (), [b'foo\n']) source.add_lines(key_delta, (key_basis,), [b'bar\n']) stream = source.get_record_stream([key_delta], 'unordered', False) test.insert_record_stream(stream) # XXX: this does somewhat too many calls in making sure of whether it # has to recreate the full text. self.assertEqual([("get_parent_map", {key_basis}), ('get_parent_map', {key_basis}), ('get_record_stream', [key_basis], 'unordered', True)], basis.calls) self.assertEqual({key_delta: (key_basis,)}, test.get_parent_map([key_delta])) self.assertEqual(b'bar\n', next(test.get_record_stream([key_delta], 'unordered', True)).get_bytes_as('fulltext')) def test_iter_lines_added_or_present_in_keys(self): # Lines from the basis are returned, and lines for a given key are only # returned once. key1 = (b'foo1',) key2 = (b'foo2',) # all sources are asked for keys: basis, test = self.get_basis_and_test_knit() basis.add_lines(key1, (), [b"foo"]) basis.calls = [] lines = list(test.iter_lines_added_or_present_in_keys([key1])) self.assertEqual([(b"foo\n", key1)], lines) self.assertEqual([("iter_lines_added_or_present_in_keys", {key1})], basis.calls) # keys in both are not duplicated: test.add_lines(key2, (), [b"bar\n"]) basis.add_lines(key2, (), [b"bar\n"]) basis.calls = [] lines = list(test.iter_lines_added_or_present_in_keys([key2])) self.assertEqual([(b"bar\n", key2)], lines) self.assertEqual([], basis.calls) def test_keys(self): key1 = (b'foo1',) key2 = (b'foo2',) # all sources are asked for keys: basis, test = self.get_basis_and_test_knit() keys = test.keys() self.assertEqual(set(), set(keys)) self.assertEqual([("keys",)], basis.calls) # keys from a basis are returned: basis.add_lines(key1, (), []) basis.calls = [] keys = test.keys() self.assertEqual({key1}, set(keys)) self.assertEqual([("keys",)], basis.calls) # keys in both are not duplicated: test.add_lines(key2, (), []) basis.add_lines(key2, (), []) basis.calls = [] keys = test.keys() self.assertEqual(2, len(keys)) self.assertEqual({key1, key2}, set(keys)) self.assertEqual([("keys",)], basis.calls) def test_add_mpdiffs(self): # records are inserted as normal; add_mpdiff builds on # add_lines, so a smoke test should be all that's needed: key_basis = (b'bar',) key_delta = (b'zaphod',) basis, test = self.get_basis_and_test_knit() source = self.make_test_knit(name='source') basis.add_lines(key_basis, (), [b'foo\n']) basis.calls = [] source.add_lines(key_basis, (), [b'foo\n']) source.add_lines(key_delta, (key_basis,), [b'bar\n']) diffs = source.make_mpdiffs([key_delta]) test.add_mpdiffs([(key_delta, (key_basis,), source.get_sha1s([key_delta])[key_delta], diffs[0])]) self.assertEqual([("get_parent_map", {key_basis}), ('get_record_stream', [key_basis], 'unordered', True), ], basis.calls) self.assertEqual({key_delta: (key_basis,)}, test.get_parent_map([key_delta])) self.assertEqual(b'bar\n', next(test.get_record_stream([key_delta], 'unordered', True)).get_bytes_as('fulltext')) def test_make_mpdiffs(self): # Generating an mpdiff across a stacking boundary should detect parent # texts regions. key = (b'foo',) key_left = (b'bar',) key_right = (b'zaphod',) basis, test = self.get_basis_and_test_knit() basis.add_lines(key_left, (), [b'bar\n']) basis.add_lines(key_right, (), [b'zaphod\n']) basis.calls = [] test.add_lines(key, (key_left, key_right), [b'bar\n', b'foo\n', b'zaphod\n']) diffs = test.make_mpdiffs([key]) self.assertEqual([ multiparent.MultiParent([multiparent.ParentText(0, 0, 0, 1), multiparent.NewText([b'foo\n']), multiparent.ParentText(1, 0, 2, 1)])], diffs) self.assertEqual(3, len(basis.calls)) self.assertEqual([ ("get_parent_map", {key_left, key_right}), ("get_parent_map", {key_left, key_right}), ], basis.calls[:-1]) last_call = basis.calls[-1] self.assertEqual('get_record_stream', last_call[0]) self.assertEqual({key_left, key_right}, set(last_call[1])) self.assertEqual('topological', last_call[2]) self.assertEqual(True, last_call[3]) class TestNetworkBehaviour(KnitTests): """Tests for getting data out of/into knits over the network.""" def test_include_delta_closure_generates_a_knit_delta_closure(self): vf = self.make_test_knit(name='test') # put in three texts, giving ft, delta, delta vf.add_lines((b'base',), (), [b'base\n', b'content\n']) vf.add_lines((b'd1',), ((b'base',),), [b'd1\n']) vf.add_lines((b'd2',), ((b'd1',),), [b'd2\n']) # But heuristics could interfere, so check what happened: self.assertEqual(['knit-ft-gz', 'knit-delta-gz', 'knit-delta-gz'], [record.storage_kind for record in vf.get_record_stream([(b'base',), (b'd1',), (b'd2',)], 'topological', False)]) # generate a stream of just the deltas include_delta_closure=True, # serialise to the network, and check that we get a delta closure on the wire. stream = vf.get_record_stream( [(b'd1',), (b'd2',)], 'topological', True) netb = [record.get_bytes_as(record.storage_kind) for record in stream] # The first bytes should be a memo from _ContentMapGenerator, and the # second bytes should be empty (because its a API proxy not something # for wire serialisation. self.assertEqual(b'', netb[1]) bytes = netb[0] kind, line_end = network_bytes_to_kind_and_offset(bytes) self.assertEqual('knit-delta-closure', kind) class TestContentMapGenerator(KnitTests): """Tests for ContentMapGenerator""" def test_get_record_stream_gives_records(self): vf = self.make_test_knit(name='test') # put in three texts, giving ft, delta, delta vf.add_lines((b'base',), (), [b'base\n', b'content\n']) vf.add_lines((b'd1',), ((b'base',),), [b'd1\n']) vf.add_lines((b'd2',), ((b'd1',),), [b'd2\n']) keys = [(b'd1',), (b'd2',)] generator = _VFContentMapGenerator(vf, keys, global_map=vf.get_parent_map(keys)) for record in generator.get_record_stream(): if record.key == (b'd1',): self.assertEqual(b'd1\n', record.get_bytes_as('fulltext')) else: self.assertEqual(b'd2\n', record.get_bytes_as('fulltext')) def test_get_record_stream_kinds_are_raw(self): vf = self.make_test_knit(name='test') # put in three texts, giving ft, delta, delta vf.add_lines((b'base',), (), [b'base\n', b'content\n']) vf.add_lines((b'd1',), ((b'base',),), [b'd1\n']) vf.add_lines((b'd2',), ((b'd1',),), [b'd2\n']) keys = [(b'base',), (b'd1',), (b'd2',)] generator = _VFContentMapGenerator(vf, keys, global_map=vf.get_parent_map(keys)) kinds = {(b'base',): 'knit-delta-closure', (b'd1',): 'knit-delta-closure-ref', (b'd2',): 'knit-delta-closure-ref', } for record in generator.get_record_stream(): self.assertEqual(kinds[record.key], record.storage_kind)