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# Copyright (C) 2005 by Canonical Ltd
#
# Authors:
# Johan Rydberg <jrydberg@gnu.org>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import bzrlib
import bzrlib.errors as errors
from bzrlib.errors import (
RevisionNotPresent,
RevisionAlreadyPresent,
WeaveParentMismatch
)
from bzrlib.knit import KnitVersionedFile, \
KnitAnnotateFactory
from bzrlib.tests import TestCaseWithTransport
from bzrlib.trace import mutter
from bzrlib.transport import get_transport
from bzrlib.transport.memory import MemoryTransport
import bzrlib.versionedfile as versionedfile
from bzrlib.weave import WeaveFile
from bzrlib.weavefile import read_weave
class VersionedFileTestMixIn(object):
"""A mixin test class for testing VersionedFiles.
This is not an adaptor-style test at this point because
theres no dynamic substitution of versioned file implementations,
they are strictly controlled by their owning repositories.
"""
def test_add(self):
f = self.get_file()
f.add_lines('r0', [], ['a\n', 'b\n'])
f.add_lines('r1', ['r0'], ['b\n', 'c\n'])
def verify_file(f):
versions = f.versions()
self.assertTrue('r0' in versions)
self.assertTrue('r1' in versions)
self.assertEquals(f.get_lines('r0'), ['a\n', 'b\n'])
self.assertEquals(f.get_text('r0'), 'a\nb\n')
self.assertEquals(f.get_lines('r1'), ['b\n', 'c\n'])
self.assertEqual(2, len(f))
self.assertEqual(2, f.num_versions())
self.assertRaises(RevisionNotPresent,
f.add_lines, 'r2', ['foo'], [])
self.assertRaises(RevisionAlreadyPresent,
f.add_lines, 'r1', [], [])
verify_file(f)
f = self.reopen_file()
verify_file(f)
def test_ancestry(self):
f = self.get_file()
self.assertEqual([], f.get_ancestry([]))
f.add_lines('r0', [], ['a\n', 'b\n'])
f.add_lines('r1', ['r0'], ['b\n', 'c\n'])
f.add_lines('r2', ['r0'], ['b\n', 'c\n'])
f.add_lines('r3', ['r2'], ['b\n', 'c\n'])
f.add_lines('rM', ['r1', 'r2'], ['b\n', 'c\n'])
self.assertEqual([], f.get_ancestry([]))
versions = set(f.get_ancestry(['rM']))
self.assertEquals(versions, set(['rM', 'r2', 'r1', 'r0']))
self.assertRaises(RevisionNotPresent,
f.get_ancestry, ['rM', 'rX'])
def test_clear_cache(self):
f = self.get_file()
# on a new file it should not error
f.clear_cache()
# and after adding content, doing a clear_cache and a get should work.
f.add_lines('0', [], ['a'])
f.clear_cache()
self.assertEqual(['a'], f.get_lines('0'))
def test_clone_text(self):
f = self.get_file()
f.add_lines('r0', [], ['a\n', 'b\n'])
f.clone_text('r1', 'r0', ['r0'])
def verify_file(f):
self.assertEquals(f.get_lines('r1'), f.get_lines('r0'))
self.assertEquals(f.get_lines('r1'), ['a\n', 'b\n'])
self.assertEquals(f.get_parents('r1'), ['r0'])
self.assertRaises(RevisionNotPresent,
f.clone_text, 'r2', 'rX', [])
self.assertRaises(RevisionAlreadyPresent,
f.clone_text, 'r1', 'r0', [])
verify_file(f)
verify_file(self.reopen_file())
def test_create_empty(self):
f = self.get_file()
f.add_lines('0', [], ['a\n'])
new_f = f.create_empty('t', MemoryTransport())
# smoke test, specific types should check it is honoured correctly for
# non type attributes
self.assertEqual([], new_f.versions())
self.assertTrue(isinstance(new_f, f.__class__))
def test_copy_to(self):
f = self.get_file()
f.add_lines('0', [], ['a\n'])
t = MemoryTransport()
f.copy_to('foo', t)
for suffix in f.__class__.get_suffixes():
self.assertTrue(t.has('foo' + suffix))
def test_get_suffixes(self):
f = self.get_file()
# should be the same
self.assertEqual(f.__class__.get_suffixes(), f.__class__.get_suffixes())
# and should be a list
self.assertTrue(isinstance(f.__class__.get_suffixes(), list))
def test_get_graph(self):
f = self.get_file()
f.add_lines('v1', [], ['hello\n'])
f.add_lines('v2', ['v1'], ['hello\n', 'world\n'])
f.add_lines('v3', ['v2'], ['hello\n', 'cruel\n', 'world\n'])
self.assertEqual({'v1': [],
'v2': ['v1'],
'v3': ['v2']},
f.get_graph())
def test_get_parents(self):
f = self.get_file()
f.add_lines('r0', [], ['a\n', 'b\n'])
f.add_lines('r1', [], ['a\n', 'b\n'])
f.add_lines('r2', [], ['a\n', 'b\n'])
f.add_lines('r3', [], ['a\n', 'b\n'])
f.add_lines('m', ['r0', 'r1', 'r2', 'r3'], ['a\n', 'b\n'])
self.assertEquals(f.get_parents('m'), ['r0', 'r1', 'r2', 'r3'])
self.assertRaises(RevisionNotPresent,
f.get_parents, 'y')
def test_annotate(self):
f = self.get_file()
f.add_lines('r0', [], ['a\n', 'b\n'])
f.add_lines('r1', ['r0'], ['c\n', 'b\n'])
origins = f.annotate('r1')
self.assertEquals(origins[0][0], 'r1')
self.assertEquals(origins[1][0], 'r0')
self.assertRaises(RevisionNotPresent,
f.annotate, 'foo')
def test_walk(self):
f = self.get_file('1')
f.add_lines('r0', [], ['a\n', 'b\n'])
f.add_lines('r1', ['r0'], ['c\n', 'b\n'])
f.add_lines('rX', ['r1'], ['d\n', 'b\n'])
f.add_lines('rY', ['r1'], ['c\n', 'e\n'])
lines = {}
for lineno, insert, dset, text in f.walk(['rX', 'rY']):
lines[text] = (insert, dset)
self.assertTrue(lines['a\n'], ('r0', set(['r1'])))
self.assertTrue(lines['b\n'], ('r0', set(['rY'])))
self.assertTrue(lines['c\n'], ('r1', set(['rX'])))
self.assertTrue(lines['d\n'], ('rX', set([])))
self.assertTrue(lines['e\n'], ('rY', set([])))
def test_detection(self):
# Test weaves detect corruption.
#
# Weaves contain a checksum of their texts.
# When a text is extracted, this checksum should be
# verified.
w = self.get_file_corrupted_text()
self.assertEqual('hello\n', w.get_text('v1'))
self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
self.assertRaises(errors.WeaveInvalidChecksum, w.check)
w = self.get_file_corrupted_checksum()
self.assertEqual('hello\n', w.get_text('v1'))
self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
self.assertRaises(errors.WeaveInvalidChecksum, w.check)
def get_file_corrupted_text(self):
"""Return a versioned file with corrupt text but valid metadata."""
raise NotImplementedError(self.get_file_corrupted_text)
def reopen_file(self, name='foo'):
"""Open the versioned file from disk again."""
raise NotImplementedError(self.reopen_file)
class TestWeave(TestCaseWithTransport, VersionedFileTestMixIn):
def get_file(self, name='foo'):
return WeaveFile(name, get_transport(self.get_url('.')), create=True)
def get_file_corrupted_text(self):
w = WeaveFile('foo', get_transport(self.get_url('.')), create=True)
w.add_lines('v1', [], ['hello\n'])
w.add_lines('v2', ['v1'], ['hello\n', 'there\n'])
# We are going to invasively corrupt the text
# Make sure the internals of weave are the same
self.assertEqual([('{', 0)
, 'hello\n'
, ('}', None)
, ('{', 1)
, 'there\n'
, ('}', None)
], w._weave)
self.assertEqual(['f572d396fae9206628714fb2ce00f72e94f2258f'
, '90f265c6e75f1c8f9ab76dcf85528352c5f215ef'
], w._sha1s)
w.check()
# Corrupted
w._weave[4] = 'There\n'
return w
def get_file_corrupted_checksum(self):
w = self.get_file_corrupted_text()
# Corrected
w._weave[4] = 'there\n'
self.assertEqual('hello\nthere\n', w.get_text('v2'))
#Invalid checksum, first digit changed
w._sha1s[1] = 'f0f265c6e75f1c8f9ab76dcf85528352c5f215ef'
return w
def reopen_file(self, name='foo'):
return WeaveFile(name, get_transport(self.get_url('.')))
def test_no_implicit_create(self):
self.assertRaises(errors.NoSuchFile,
WeaveFile,
'foo',
get_transport(self.get_url('.')))
class TestKnit(TestCaseWithTransport, VersionedFileTestMixIn):
def get_file(self, name='foo'):
return KnitVersionedFile(name, get_transport(self.get_url('.')),
delta=True, create=True)
def get_file_corrupted_text(self):
knit = self.get_file()
knit.add_lines('v1', [], ['hello\n'])
knit.add_lines('v2', ['v1'], ['hello\n', 'there\n'])
return knit
def reopen_file(self, name='foo'):
return KnitVersionedFile(name, get_transport(self.get_url('.')), delta=True)
def test_detection(self):
print "TODO for merging: create a corrupted knit."
knit = self.get_file()
knit.check()
def test_no_implicit_create(self):
self.assertRaises(errors.NoSuchFile,
KnitVersionedFile,
'foo',
get_transport(self.get_url('.')))
class InterString(versionedfile.InterVersionedFile):
"""An inter-versionedfile optimised code path for strings.
This is for use during testing where we use strings as versionedfiles
so that none of the default regsitered interversionedfile classes will
match - which lets us test the match logic.
"""
@staticmethod
def is_compatible(source, target):
"""InterString is compatible with strings-as-versionedfiles."""
return isinstance(source, str) and isinstance(target, str)
# TODO this and the InterRepository core logic should be consolidatable
# if we make the registry a separate class though we still need to
# test the behaviour in the active registry to catch failure-to-handle-
# stange-objects
class TestInterVersionedFile(TestCaseWithTransport):
def test_get_default_inter_versionedfile(self):
# test that the InterVersionedFile.get(a, b) probes
# for a class where is_compatible(a, b) returns
# true and returns a default interversionedfile otherwise.
# This also tests that the default registered optimised interversionedfile
# classes do not barf inappropriately when a surprising versionedfile type
# is handed to them.
dummy_a = "VersionedFile 1."
dummy_b = "VersionedFile 2."
self.assertGetsDefaultInterVersionedFile(dummy_a, dummy_b)
def assertGetsDefaultInterVersionedFile(self, a, b):
"""Asserts that InterVersionedFile.get(a, b) -> the default."""
inter = versionedfile.InterVersionedFile.get(a, b)
self.assertEqual(versionedfile.InterVersionedFile,
inter.__class__)
self.assertEqual(a, inter.source)
self.assertEqual(b, inter.target)
def test_register_inter_versionedfile_class(self):
# test that a optimised code path provider - a
# InterVersionedFile subclass can be registered and unregistered
# and that it is correctly selected when given a versionedfile
# pair that it returns true on for the is_compatible static method
# check
dummy_a = "VersionedFile 1."
dummy_b = "VersionedFile 2."
versionedfile.InterVersionedFile.register_optimiser(InterString)
try:
# we should get the default for something InterString returns False
# to
self.assertFalse(InterString.is_compatible(dummy_a, None))
self.assertGetsDefaultInterVersionedFile(dummy_a, None)
# and we should get an InterString for a pair it 'likes'
self.assertTrue(InterString.is_compatible(dummy_a, dummy_b))
inter = versionedfile.InterVersionedFile.get(dummy_a, dummy_b)
self.assertEqual(InterString, inter.__class__)
self.assertEqual(dummy_a, inter.source)
self.assertEqual(dummy_b, inter.target)
finally:
versionedfile.InterVersionedFile.unregister_optimiser(InterString)
# now we should get the default InterVersionedFile object again.
self.assertGetsDefaultInterVersionedFile(dummy_a, dummy_b)
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