17
17
"""Tests for Knit data structure"""
19
from cStringIO import StringIO
27
from bzrlib.errors import (
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RevisionAlreadyPresent,
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from bzrlib.errors import KnitError, RevisionAlreadyPresent
33
24
from bzrlib.knit import (
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27
KnitAnnotateFactory,
42
29
from bzrlib.osutils import split_lines
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from bzrlib.tests import TestCase, TestCaseWithTransport
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from bzrlib.tests import TestCaseWithTransport
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from bzrlib.transport import TransportLogger, get_transport
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32
from bzrlib.transport.memory import MemoryTransport
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33
from bzrlib.weave import Weave
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class KnitContentTests(TestCase):
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def test_constructor(self):
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content = KnitContent([])
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content = KnitContent([])
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self.assertEqual(content.text(), [])
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content = KnitContent([("origin1", "text1"), ("origin2", "text2")])
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self.assertEqual(content.text(), ["text1", "text2"])
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def test_annotate(self):
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content = KnitContent([])
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self.assertEqual(content.annotate(), [])
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content = KnitContent([("origin1", "text1"), ("origin2", "text2")])
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self.assertEqual(content.annotate(),
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[("origin1", "text1"), ("origin2", "text2")])
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def test_annotate_iter(self):
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content = KnitContent([])
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it = content.annotate_iter()
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self.assertRaises(StopIteration, it.next)
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content = KnitContent([("origin1", "text1"), ("origin2", "text2")])
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it = content.annotate_iter()
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self.assertEqual(it.next(), ("origin1", "text1"))
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self.assertEqual(it.next(), ("origin2", "text2"))
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self.assertRaises(StopIteration, it.next)
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content = KnitContent([("origin1", "text1"), ("origin2", "text2")])
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self.assertIsInstance(copy, KnitContent)
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self.assertEqual(copy.annotate(),
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[("origin1", "text1"), ("origin2", "text2")])
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def test_line_delta(self):
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content1 = KnitContent([("", "a"), ("", "b")])
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content2 = KnitContent([("", "a"), ("", "a"), ("", "c")])
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self.assertEqual(content1.line_delta(content2),
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[(1, 2, 2, [("", "a"), ("", "c")])])
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def test_line_delta_iter(self):
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content1 = KnitContent([("", "a"), ("", "b")])
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content2 = KnitContent([("", "a"), ("", "a"), ("", "c")])
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it = content1.line_delta_iter(content2)
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self.assertEqual(it.next(), (1, 2, 2, [("", "a"), ("", "c")]))
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self.assertRaises(StopIteration, it.next)
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class MockTransport(object):
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def __init__(self, file_lines=None):
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self.file_lines = file_lines
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# We have no base directory for the MockTransport
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def get(self, filename):
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if self.file_lines is None:
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raise NoSuchFile(filename)
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return StringIO("\n".join(self.file_lines))
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def readv(self, relpath, offsets):
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fp = self.get(relpath)
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for offset, size in offsets:
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yield offset, fp.read(size)
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def __getattr__(self, name):
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def queue_call(*args, **kwargs):
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self.calls.append((name, args, kwargs))
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class LowLevelKnitDataTests(TestCase):
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def create_gz_content(self, text):
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gz_file = gzip.GzipFile(mode='wb', fileobj=sio)
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return sio.getvalue()
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def test_valid_knit_data(self):
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sha1sum = sha.new('foo\nbar\n').hexdigest()
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gz_txt = self.create_gz_content('version rev-id-1 2 %s\n'
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transport = MockTransport([gz_txt])
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data = _KnitData(transport, 'filename', mode='r')
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records = [('rev-id-1', 0, len(gz_txt))]
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contents = data.read_records(records)
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self.assertEqual({'rev-id-1':(['foo\n', 'bar\n'], sha1sum)}, contents)
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raw_contents = list(data.read_records_iter_raw(records))
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self.assertEqual([('rev-id-1', gz_txt)], raw_contents)
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def test_not_enough_lines(self):
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sha1sum = sha.new('foo\n').hexdigest()
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# record says 2 lines data says 1
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gz_txt = self.create_gz_content('version rev-id-1 2 %s\n'
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transport = MockTransport([gz_txt])
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data = _KnitData(transport, 'filename', mode='r')
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records = [('rev-id-1', 0, len(gz_txt))]
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self.assertRaises(errors.KnitCorrupt, data.read_records, records)
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# read_records_iter_raw won't detect that sort of mismatch/corruption
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raw_contents = list(data.read_records_iter_raw(records))
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self.assertEqual([('rev-id-1', gz_txt)], raw_contents)
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def test_too_many_lines(self):
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sha1sum = sha.new('foo\nbar\n').hexdigest()
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# record says 1 lines data says 2
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gz_txt = self.create_gz_content('version rev-id-1 1 %s\n'
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transport = MockTransport([gz_txt])
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data = _KnitData(transport, 'filename', mode='r')
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records = [('rev-id-1', 0, len(gz_txt))]
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self.assertRaises(errors.KnitCorrupt, data.read_records, records)
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# read_records_iter_raw won't detect that sort of mismatch/corruption
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raw_contents = list(data.read_records_iter_raw(records))
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self.assertEqual([('rev-id-1', gz_txt)], raw_contents)
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def test_mismatched_version_id(self):
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sha1sum = sha.new('foo\nbar\n').hexdigest()
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gz_txt = self.create_gz_content('version rev-id-1 2 %s\n'
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transport = MockTransport([gz_txt])
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data = _KnitData(transport, 'filename', mode='r')
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# We are asking for rev-id-2, but the data is rev-id-1
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records = [('rev-id-2', 0, len(gz_txt))]
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self.assertRaises(errors.KnitCorrupt, data.read_records, records)
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# read_records_iter_raw will notice if we request the wrong version.
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self.assertRaises(errors.KnitCorrupt, list,
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data.read_records_iter_raw(records))
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def test_uncompressed_data(self):
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sha1sum = sha.new('foo\nbar\n').hexdigest()
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txt = ('version rev-id-1 2 %s\n'
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transport = MockTransport([txt])
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data = _KnitData(transport, 'filename', mode='r')
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records = [('rev-id-1', 0, len(txt))]
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# We don't have valid gzip data ==> corrupt
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self.assertRaises(errors.KnitCorrupt, data.read_records, records)
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# read_records_iter_raw will notice the bad data
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self.assertRaises(errors.KnitCorrupt, list,
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data.read_records_iter_raw(records))
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def test_corrupted_data(self):
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sha1sum = sha.new('foo\nbar\n').hexdigest()
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gz_txt = self.create_gz_content('version rev-id-1 2 %s\n'
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# Change 2 bytes in the middle to \xff
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gz_txt = gz_txt[:10] + '\xff\xff' + gz_txt[12:]
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transport = MockTransport([gz_txt])
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data = _KnitData(transport, 'filename', mode='r')
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records = [('rev-id-1', 0, len(gz_txt))]
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self.assertRaises(errors.KnitCorrupt, data.read_records, records)
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# read_records_iter_raw will notice if we request the wrong version.
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self.assertRaises(errors.KnitCorrupt, list,
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data.read_records_iter_raw(records))
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class LowLevelKnitIndexTests(TestCase):
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def test_no_such_file(self):
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transport = MockTransport()
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self.assertRaises(NoSuchFile, _KnitIndex, transport, "filename", "r")
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self.assertRaises(NoSuchFile, _KnitIndex, transport,
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"filename", "w", create=False)
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def test_create_file(self):
251
transport = MockTransport()
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index = _KnitIndex(transport, "filename", "w",
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file_mode="wb", create=True)
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("put_bytes_non_atomic",
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("filename", index.HEADER), {"mode": "wb"}),
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transport.calls.pop(0))
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def test_delay_create_file(self):
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transport = MockTransport()
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index = _KnitIndex(transport, "filename", "w",
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create=True, file_mode="wb", create_parent_dir=True,
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delay_create=True, dir_mode=0777)
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self.assertEqual([], transport.calls)
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index.add_versions([])
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name, (filename, f), kwargs = transport.calls.pop(0)
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self.assertEqual("put_file_non_atomic", name)
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{"dir_mode": 0777, "create_parent_dir": True, "mode": "wb"},
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self.assertEqual("filename", filename)
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self.assertEqual(index.HEADER, f.read())
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index.add_versions([])
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self.assertEqual(("append_bytes", ("filename", ""), {}),
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transport.calls.pop(0))
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def test_read_utf8_version_id(self):
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unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}"
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utf8_revision_id = unicode_revision_id.encode('utf-8')
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transport = MockTransport([
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'%s option 0 1 :' % (utf8_revision_id,)
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index = _KnitIndex(transport, "filename", "r")
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# _KnitIndex is a private class, and deals in utf8 revision_ids, not
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# Unicode revision_ids.
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self.assertTrue(index.has_version(utf8_revision_id))
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self.assertFalse(index.has_version(unicode_revision_id))
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def test_read_utf8_parents(self):
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unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}"
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utf8_revision_id = unicode_revision_id.encode('utf-8')
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transport = MockTransport([
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"version option 0 1 .%s :" % (utf8_revision_id,)
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index = _KnitIndex(transport, "filename", "r")
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self.assertEqual([utf8_revision_id],
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index.get_parents_with_ghosts("version"))
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def test_read_ignore_corrupted_lines(self):
306
transport = MockTransport([
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"corrupted options 0 1 .b .c ",
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"version options 0 1 :"
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index = _KnitIndex(transport, "filename", "r")
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self.assertEqual(1, index.num_versions())
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self.assertTrue(index.has_version("version"))
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def test_read_corrupted_header(self):
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transport = MockTransport(['not a bzr knit index header\n'])
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self.assertRaises(KnitHeaderError,
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_KnitIndex, transport, "filename", "r")
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def test_read_duplicate_entries(self):
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transport = MockTransport([
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"parent options 0 1 :",
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"version options1 0 1 0 :",
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"version options2 1 2 .other :",
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"version options3 3 4 0 .other :"
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index = _KnitIndex(transport, "filename", "r")
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self.assertEqual(2, index.num_versions())
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self.assertEqual(1, index.lookup("version"))
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self.assertEqual((3, 4), index.get_position("version"))
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self.assertEqual(["options3"], index.get_options("version"))
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self.assertEqual(["parent", "other"],
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index.get_parents_with_ghosts("version"))
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def test_read_compressed_parents(self):
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transport = MockTransport([
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"c option 0 1 1 0 :",
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index = _KnitIndex(transport, "filename", "r")
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self.assertEqual(["a"], index.get_parents("b"))
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self.assertEqual(["b", "a"], index.get_parents("c"))
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def test_write_utf8_version_id(self):
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unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}"
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utf8_revision_id = unicode_revision_id.encode('utf-8')
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transport = MockTransport([
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index = _KnitIndex(transport, "filename", "r")
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index.add_version(utf8_revision_id, ["option"], 0, 1, [])
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self.assertEqual(("append_bytes", ("filename",
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"\n%s option 0 1 :" % (utf8_revision_id,)),
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transport.calls.pop(0))
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def test_write_utf8_parents(self):
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unicode_revision_id = u"version-\N{CYRILLIC CAPITAL LETTER A}"
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utf8_revision_id = unicode_revision_id.encode('utf-8')
364
transport = MockTransport([
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index = _KnitIndex(transport, "filename", "r")
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index.add_version("version", ["option"], 0, 1, [utf8_revision_id])
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self.assertEqual(("append_bytes", ("filename",
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"\nversion option 0 1 .%s :" % (utf8_revision_id,)),
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transport.calls.pop(0))
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def test_get_graph(self):
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transport = MockTransport()
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index = _KnitIndex(transport, "filename", "w", create=True)
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self.assertEqual([], index.get_graph())
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index.add_version("a", ["option"], 0, 1, ["b"])
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self.assertEqual([("a", ["b"])], index.get_graph())
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index.add_version("c", ["option"], 0, 1, ["d"])
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self.assertEqual([("a", ["b"]), ("c", ["d"])],
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sorted(index.get_graph()))
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def test_get_ancestry(self):
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transport = MockTransport([
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"b option 0 1 0 .e :",
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"c option 0 1 1 0 :",
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"d option 0 1 2 .f :"
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index = _KnitIndex(transport, "filename", "r")
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self.assertEqual([], index.get_ancestry([]))
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self.assertEqual(["a"], index.get_ancestry(["a"]))
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self.assertEqual(["a", "b"], index.get_ancestry(["b"]))
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self.assertEqual(["a", "b", "c"], index.get_ancestry(["c"]))
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self.assertEqual(["a", "b", "c", "d"], index.get_ancestry(["d"]))
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self.assertEqual(["a", "b"], index.get_ancestry(["a", "b"]))
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self.assertEqual(["a", "b", "c"], index.get_ancestry(["a", "c"]))
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self.assertRaises(RevisionNotPresent, index.get_ancestry, ["e"])
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def test_get_ancestry_with_ghosts(self):
407
transport = MockTransport([
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"b option 0 1 0 .e :",
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"c option 0 1 0 .f .g :",
412
"d option 0 1 2 .h .j .k :"
414
index = _KnitIndex(transport, "filename", "r")
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self.assertEqual([], index.get_ancestry_with_ghosts([]))
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self.assertEqual(["a"], index.get_ancestry_with_ghosts(["a"]))
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self.assertEqual(["a", "e", "b"],
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index.get_ancestry_with_ghosts(["b"]))
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self.assertEqual(["a", "g", "f", "c"],
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index.get_ancestry_with_ghosts(["c"]))
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self.assertEqual(["a", "g", "f", "c", "k", "j", "h", "d"],
423
index.get_ancestry_with_ghosts(["d"]))
424
self.assertEqual(["a", "e", "b"],
425
index.get_ancestry_with_ghosts(["a", "b"]))
426
self.assertEqual(["a", "g", "f", "c"],
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index.get_ancestry_with_ghosts(["a", "c"]))
429
["a", "g", "f", "c", "e", "b", "k", "j", "h", "d"],
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index.get_ancestry_with_ghosts(["b", "d"]))
432
self.assertRaises(RevisionNotPresent,
433
index.get_ancestry_with_ghosts, ["e"])
435
def test_num_versions(self):
436
transport = MockTransport([
439
index = _KnitIndex(transport, "filename", "r")
441
self.assertEqual(0, index.num_versions())
442
self.assertEqual(0, len(index))
444
index.add_version("a", ["option"], 0, 1, [])
445
self.assertEqual(1, index.num_versions())
446
self.assertEqual(1, len(index))
448
index.add_version("a", ["option2"], 1, 2, [])
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self.assertEqual(1, index.num_versions())
450
self.assertEqual(1, len(index))
452
index.add_version("b", ["option"], 0, 1, [])
453
self.assertEqual(2, index.num_versions())
454
self.assertEqual(2, len(index))
456
def test_get_versions(self):
457
transport = MockTransport([
460
index = _KnitIndex(transport, "filename", "r")
462
self.assertEqual([], index.get_versions())
464
index.add_version("a", ["option"], 0, 1, [])
465
self.assertEqual(["a"], index.get_versions())
467
index.add_version("a", ["option"], 0, 1, [])
468
self.assertEqual(["a"], index.get_versions())
470
index.add_version("b", ["option"], 0, 1, [])
471
self.assertEqual(["a", "b"], index.get_versions())
473
def test_idx_to_name(self):
474
transport = MockTransport([
479
index = _KnitIndex(transport, "filename", "r")
481
self.assertEqual("a", index.idx_to_name(0))
482
self.assertEqual("b", index.idx_to_name(1))
483
self.assertEqual("b", index.idx_to_name(-1))
484
self.assertEqual("a", index.idx_to_name(-2))
486
def test_lookup(self):
487
transport = MockTransport([
492
index = _KnitIndex(transport, "filename", "r")
494
self.assertEqual(0, index.lookup("a"))
495
self.assertEqual(1, index.lookup("b"))
497
def test_add_version(self):
498
transport = MockTransport([
501
index = _KnitIndex(transport, "filename", "r")
503
index.add_version("a", ["option"], 0, 1, ["b"])
504
self.assertEqual(("append_bytes",
505
("filename", "\na option 0 1 .b :"),
506
{}), transport.calls.pop(0))
507
self.assertTrue(index.has_version("a"))
508
self.assertEqual(1, index.num_versions())
509
self.assertEqual((0, 1), index.get_position("a"))
510
self.assertEqual(["option"], index.get_options("a"))
511
self.assertEqual(["b"], index.get_parents_with_ghosts("a"))
513
index.add_version("a", ["opt"], 1, 2, ["c"])
514
self.assertEqual(("append_bytes",
515
("filename", "\na opt 1 2 .c :"),
516
{}), transport.calls.pop(0))
517
self.assertTrue(index.has_version("a"))
518
self.assertEqual(1, index.num_versions())
519
self.assertEqual((1, 2), index.get_position("a"))
520
self.assertEqual(["opt"], index.get_options("a"))
521
self.assertEqual(["c"], index.get_parents_with_ghosts("a"))
523
index.add_version("b", ["option"], 2, 3, ["a"])
524
self.assertEqual(("append_bytes",
525
("filename", "\nb option 2 3 0 :"),
526
{}), transport.calls.pop(0))
527
self.assertTrue(index.has_version("b"))
528
self.assertEqual(2, index.num_versions())
529
self.assertEqual((2, 3), index.get_position("b"))
530
self.assertEqual(["option"], index.get_options("b"))
531
self.assertEqual(["a"], index.get_parents_with_ghosts("b"))
533
def test_add_versions(self):
534
transport = MockTransport([
537
index = _KnitIndex(transport, "filename", "r")
540
("a", ["option"], 0, 1, ["b"]),
541
("a", ["opt"], 1, 2, ["c"]),
542
("b", ["option"], 2, 3, ["a"])
544
self.assertEqual(("append_bytes", ("filename",
545
"\na option 0 1 .b :"
548
), {}), transport.calls.pop(0))
549
self.assertTrue(index.has_version("a"))
550
self.assertTrue(index.has_version("b"))
551
self.assertEqual(2, index.num_versions())
552
self.assertEqual((1, 2), index.get_position("a"))
553
self.assertEqual((2, 3), index.get_position("b"))
554
self.assertEqual(["opt"], index.get_options("a"))
555
self.assertEqual(["option"], index.get_options("b"))
556
self.assertEqual(["c"], index.get_parents_with_ghosts("a"))
557
self.assertEqual(["a"], index.get_parents_with_ghosts("b"))
559
def test_delay_create_and_add_versions(self):
560
transport = MockTransport()
562
index = _KnitIndex(transport, "filename", "w",
563
create=True, file_mode="wb", create_parent_dir=True,
564
delay_create=True, dir_mode=0777)
565
self.assertEqual([], transport.calls)
568
("a", ["option"], 0, 1, ["b"]),
569
("a", ["opt"], 1, 2, ["c"]),
570
("b", ["option"], 2, 3, ["a"])
572
name, (filename, f), kwargs = transport.calls.pop(0)
573
self.assertEqual("put_file_non_atomic", name)
575
{"dir_mode": 0777, "create_parent_dir": True, "mode": "wb"},
577
self.assertEqual("filename", filename)
580
"\na option 0 1 .b :"
582
"\nb option 2 3 0 :",
585
def test_has_version(self):
586
transport = MockTransport([
590
index = _KnitIndex(transport, "filename", "r")
592
self.assertTrue(index.has_version("a"))
593
self.assertFalse(index.has_version("b"))
595
def test_get_position(self):
596
transport = MockTransport([
601
index = _KnitIndex(transport, "filename", "r")
603
self.assertEqual((0, 1), index.get_position("a"))
604
self.assertEqual((1, 2), index.get_position("b"))
606
def test_get_method(self):
607
transport = MockTransport([
609
"a fulltext,unknown 0 1 :",
610
"b unknown,line-delta 1 2 :",
613
index = _KnitIndex(transport, "filename", "r")
615
self.assertEqual("fulltext", index.get_method("a"))
616
self.assertEqual("line-delta", index.get_method("b"))
617
self.assertRaises(errors.KnitIndexUnknownMethod, index.get_method, "c")
619
def test_get_options(self):
620
transport = MockTransport([
625
index = _KnitIndex(transport, "filename", "r")
627
self.assertEqual(["opt1"], index.get_options("a"))
628
self.assertEqual(["opt2", "opt3"], index.get_options("b"))
630
def test_get_parents(self):
631
transport = MockTransport([
634
"b option 1 2 0 .c :",
635
"c option 1 2 1 0 .e :"
637
index = _KnitIndex(transport, "filename", "r")
639
self.assertEqual([], index.get_parents("a"))
640
self.assertEqual(["a", "c"], index.get_parents("b"))
641
self.assertEqual(["b", "a"], index.get_parents("c"))
643
def test_get_parents_with_ghosts(self):
644
transport = MockTransport([
647
"b option 1 2 0 .c :",
648
"c option 1 2 1 0 .e :"
650
index = _KnitIndex(transport, "filename", "r")
652
self.assertEqual([], index.get_parents_with_ghosts("a"))
653
self.assertEqual(["a", "c"], index.get_parents_with_ghosts("b"))
654
self.assertEqual(["b", "a", "e"],
655
index.get_parents_with_ghosts("c"))
657
def test_check_versions_present(self):
658
transport = MockTransport([
663
index = _KnitIndex(transport, "filename", "r")
665
check = index.check_versions_present
671
self.assertRaises(RevisionNotPresent, check, ["c"])
672
self.assertRaises(RevisionNotPresent, check, ["a", "b", "c"])
675
36
class KnitTests(TestCaseWithTransport):
676
37
"""Class containing knit test helper routines."""
678
def make_test_knit(self, annotate=False, delay_create=False):
39
def make_test_knit(self, annotate=False):
680
41
factory = KnitPlainFactory()
683
return KnitVersionedFile('test', get_transport('.'), access_mode='w',
684
factory=factory, create=True,
685
delay_create=delay_create)
44
return KnitVersionedFile('test', get_transport('.'), access_mode='w', factory=factory, create=True)
688
47
class BasicKnitTests(KnitTests):
1177
486
self.failIf(WeaveToKnit.is_compatible(k, w))
1178
487
self.failIf(WeaveToKnit.is_compatible(w, w))
1179
488
self.failIf(WeaveToKnit.is_compatible(k, k))
1182
class TestKnitCaching(KnitTests):
1184
def create_knit(self, cache_add=False):
1185
k = self.make_test_knit(True)
1189
k.add_lines('text-1', [], split_lines(TEXT_1))
1190
k.add_lines('text-2', [], split_lines(TEXT_2))
1193
def test_no_caching(self):
1194
k = self.create_knit()
1195
# Nothing should be cached without setting 'enable_cache'
1196
self.assertEqual({}, k._data._cache)
1198
def test_cache_add_and_clear(self):
1199
k = self.create_knit(True)
1201
self.assertEqual(['text-1', 'text-2'], sorted(k._data._cache.keys()))
1204
self.assertEqual({}, k._data._cache)
1206
def test_cache_data_read_raw(self):
1207
k = self.create_knit()
1209
# Now cache and read
1212
def read_one_raw(version):
1213
pos_map = k._get_components_positions([version])
1214
method, pos, size, next = pos_map[version]
1215
lst = list(k._data.read_records_iter_raw([(version, pos, size)]))
1216
self.assertEqual(1, len(lst))
1219
val = read_one_raw('text-1')
1220
self.assertEqual({'text-1':val[1]}, k._data._cache)
1223
# After clear, new reads are not cached
1224
self.assertEqual({}, k._data._cache)
1226
val2 = read_one_raw('text-1')
1227
self.assertEqual(val, val2)
1228
self.assertEqual({}, k._data._cache)
1230
def test_cache_data_read(self):
1231
k = self.create_knit()
1233
def read_one(version):
1234
pos_map = k._get_components_positions([version])
1235
method, pos, size, next = pos_map[version]
1236
lst = list(k._data.read_records_iter([(version, pos, size)]))
1237
self.assertEqual(1, len(lst))
1240
# Now cache and read
1243
val = read_one('text-2')
1244
self.assertEqual(['text-2'], k._data._cache.keys())
1245
self.assertEqual('text-2', val[0])
1246
content, digest = k._data._parse_record('text-2',
1247
k._data._cache['text-2'])
1248
self.assertEqual(content, val[1])
1249
self.assertEqual(digest, val[2])
1252
self.assertEqual({}, k._data._cache)
1254
val2 = read_one('text-2')
1255
self.assertEqual(val, val2)
1256
self.assertEqual({}, k._data._cache)
1258
def test_cache_read(self):
1259
k = self.create_knit()
1262
text = k.get_text('text-1')
1263
self.assertEqual(TEXT_1, text)
1264
self.assertEqual(['text-1'], k._data._cache.keys())
1267
self.assertEqual({}, k._data._cache)
1269
text = k.get_text('text-1')
1270
self.assertEqual(TEXT_1, text)
1271
self.assertEqual({}, k._data._cache)
1274
class TestKnitIndex(KnitTests):
1276
def test_add_versions_dictionary_compresses(self):
1277
"""Adding versions to the index should update the lookup dict"""
1278
knit = self.make_test_knit()
1280
idx.add_version('a-1', ['fulltext'], 0, 0, [])
1281
self.check_file_contents('test.kndx',
1282
'# bzr knit index 8\n'
1284
'a-1 fulltext 0 0 :'
1286
idx.add_versions([('a-2', ['fulltext'], 0, 0, ['a-1']),
1287
('a-3', ['fulltext'], 0, 0, ['a-2']),
1289
self.check_file_contents('test.kndx',
1290
'# bzr knit index 8\n'
1292
'a-1 fulltext 0 0 :\n'
1293
'a-2 fulltext 0 0 0 :\n'
1294
'a-3 fulltext 0 0 1 :'
1296
self.assertEqual(['a-1', 'a-2', 'a-3'], idx._history)
1297
self.assertEqual({'a-1':('a-1', ['fulltext'], 0, 0, [], 0),
1298
'a-2':('a-2', ['fulltext'], 0, 0, ['a-1'], 1),
1299
'a-3':('a-3', ['fulltext'], 0, 0, ['a-2'], 2),
1302
def test_add_versions_fails_clean(self):
1303
"""If add_versions fails in the middle, it restores a pristine state.
1305
Any modifications that are made to the index are reset if all versions
1308
# This cheats a little bit by passing in a generator which will
1309
# raise an exception before the processing finishes
1310
# Other possibilities would be to have an version with the wrong number
1311
# of entries, or to make the backing transport unable to write any
1314
knit = self.make_test_knit()
1316
idx.add_version('a-1', ['fulltext'], 0, 0, [])
1318
class StopEarly(Exception):
1321
def generate_failure():
1322
"""Add some entries and then raise an exception"""
1323
yield ('a-2', ['fulltext'], 0, 0, ['a-1'])
1324
yield ('a-3', ['fulltext'], 0, 0, ['a-2'])
1327
# Assert the pre-condition
1328
self.assertEqual(['a-1'], idx._history)
1329
self.assertEqual({'a-1':('a-1', ['fulltext'], 0, 0, [], 0)}, idx._cache)
1331
self.assertRaises(StopEarly, idx.add_versions, generate_failure())
1333
# And it shouldn't be modified
1334
self.assertEqual(['a-1'], idx._history)
1335
self.assertEqual({'a-1':('a-1', ['fulltext'], 0, 0, [], 0)}, idx._cache)
1337
def test_knit_index_ignores_empty_files(self):
1338
# There was a race condition in older bzr, where a ^C at the right time
1339
# could leave an empty .kndx file, which bzr would later claim was a
1340
# corrupted file since the header was not present. In reality, the file
1341
# just wasn't created, so it should be ignored.
1342
t = get_transport('.')
1343
t.put_bytes('test.kndx', '')
1345
knit = self.make_test_knit()
1347
def test_knit_index_checks_header(self):
1348
t = get_transport('.')
1349
t.put_bytes('test.kndx', '# not really a knit header\n\n')
1351
self.assertRaises(KnitHeaderError, self.make_test_knit)
added
removed
bzrlib/tests/test_knit.py
