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Viewing changes to bzrlib/tests/per_branch/test_locking.py

  • Committer: Jelmer Vernooij
  • Date: 2010-03-21 21:39:33 UTC
  • mfrom: (5102 +trunk)
  • mto: This revision was merged to the branch mainline in revision 5143.
  • Revision ID: jelmer@samba.org-20100321213933-fexeh9zcoz8oaju2
merge bzr.dev.

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bzrlib/tests/per_branch/test_locking.py
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# Copyright (C) 2006 Canonical Ltd
 
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# Copyright (C) 2006-2010 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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"""Test locks across all branch implemenations"""
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from bzrlib import errors
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from bzrlib.branch import BzrBranchFormat4
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from bzrlib.bzrdir import RemoteBzrDirFormat
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from bzrlib.tests import TestSkipped
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from bzrlib.tests.lock_helpers import TestPreventLocking, LockWrapper
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from bzrlib.tests.per_branch.test_branch import TestCaseWithBranch
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class TestBranchLocking(TestCaseWithBranch):
 
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from bzrlib import (
 
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    branch as _mod_branch,
 
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    errors,
 
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    tests,
 
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    )
 
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from bzrlib.tests import (
 
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    lock_helpers,
 
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    per_branch,
 
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    )
 
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class TestBranchLocking(per_branch.TestCaseWithBranch):
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    def setUp(self):
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        TestCaseWithBranch.setUp(self)
 
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        super(TestBranchLocking, self).setUp()
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        self.reduceLockdirTimeout()
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    def get_instrumented_branch(self):
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        # not there. But assuming it has them lets us test the exact
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        # lock/unlock order.
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        self.locks = []
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        b = LockWrapper(self.locks, self.get_branch(), 'b')
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        b.repository = LockWrapper(self.locks, b.repository, 'r')
 
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        b = lock_helpers.LockWrapper(self.locks, self.get_branch(), 'b')
 
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        b.repository = lock_helpers.LockWrapper(self.locks, b.repository, 'r')
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        bcf = b.control_files
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        rcf = getattr(b.repository, 'control_files', None)
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        if rcf is None:
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            # Look out for branch types that reuse their control files
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            self.combined_control = bcf is rcf
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        try:
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            b.control_files = LockWrapper(self.locks, b.control_files, 'bc')
 
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            b.control_files = lock_helpers.LockWrapper(
 
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                self.locks, b.control_files, 'bc')
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        except AttributeError:
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            # RemoteBranch seems to trigger this.
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            raise TestSkipped("Could not instrument branch control files.")
 
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            raise tests.TestSkipped(
 
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                'Could not instrument branch control files.')
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        if self.combined_control:
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            # instrument the repository control files too to ensure its worked
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            # with correctly. When they are not shared, we trust the repository
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            # API and only instrument the repository itself.
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            b.repository.control_files = \
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                LockWrapper(self.locks, b.repository.control_files, 'rc')
 
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            b.repository.control_files = lock_helpers.LockWrapper(
 
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                self.locks, b.repository.control_files, 'rc')
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        return b
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    def test_01_lock_read(self):
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        try:
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            self.assertTrue(b.is_locked())
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            self.assertTrue(b.repository.is_locked())
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            self.assertLogsError(TestPreventLocking, b.unlock)
 
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            self.assertLogsError(lock_helpers.TestPreventLocking, b.unlock)
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            if self.combined_control:
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                self.assertTrue(b.is_locked())
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            else:
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        try:
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            self.assertTrue(b.is_locked())
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            self.assertTrue(b.repository.is_locked())
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            self.assertLogsError(TestPreventLocking, b.unlock)
 
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            self.assertLogsError(lock_helpers.TestPreventLocking, b.unlock)
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            self.assertTrue(b.is_locked())
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            self.assertTrue(b.repository.is_locked())
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        b = self.get_instrumented_branch()
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        b.repository.disable_lock_read()
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        self.assertRaises(TestPreventLocking, b.lock_read)
 
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        self.assertRaises(lock_helpers.TestPreventLocking, b.lock_read)
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        self.assertFalse(b.is_locked())
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        self.assertFalse(b.repository.is_locked())
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        b = self.get_instrumented_branch()
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        b.repository.disable_lock_write()
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        self.assertRaises(TestPreventLocking, b.lock_write)
 
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        self.assertRaises(lock_helpers.TestPreventLocking, b.lock_write)
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        self.assertFalse(b.is_locked())
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        self.assertFalse(b.repository.is_locked())
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        b = self.get_instrumented_branch()
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        b.control_files.disable_lock_read()
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        self.assertRaises(TestPreventLocking, b.lock_read)
 
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        self.assertRaises(lock_helpers.TestPreventLocking, b.lock_read)
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        self.assertFalse(b.is_locked())
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        self.assertFalse(b.repository.is_locked())
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        b = self.get_instrumented_branch()
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        b.control_files.disable_lock_write()
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        self.assertRaises(TestPreventLocking, b.lock_write)
 
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        self.assertRaises(lock_helpers.TestPreventLocking, b.lock_write)
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        self.assertFalse(b.is_locked())
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        self.assertFalse(b.repository.is_locked())
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        if self.combined_control:
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        branch.unlock()
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    def test_lock_write_locks_repo_too(self):
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        if isinstance(self.branch_format, BzrBranchFormat4):
 
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        if isinstance(self.branch_format, _mod_branch.BzrBranchFormat4):
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            # Branch format 4 is combined with the repository, so this test
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            # doesn't apply.
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            return