~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006 by 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Benchmark test suite for bzr."""

from bzrlib import bzrdir, plugin

from bzrlib.tests.TestUtil import TestLoader

from bzrlib.tests.blackbox import ExternalBase

class Benchmark(ExternalBase):

    def make_kernel_like_tree(self, url=None):

        """Setup a temporary tree roughly like a kernel tree.

        :param url: Creat the kernel like tree as a lightweight checkout

        of a new branch created at url.

        """

        # a kernel tree has ~10000 and 500 directory, with most files around 

        # 3-4 levels deep. 

        # we simulate this by three levels of dirs named 0-7, givin 512 dirs,

        # and 20 files each.

        if url is not None:

            b = bzrdir.BzrDir.create_branch_convenience(url)

            d = bzrdir.BzrDir.create('.')

            bzrlib.branch.BranchReferenceFormat().initialize(d, b)

            d.create_workingtree()

        else:

            self.run_bzr('init')

        files = []

        for outer in range(8):

            files.append("%s/" % outer)

            for middle in range(8):

                files.append("%s/%s/" % (outer, middle))

                for inner in range(8):

                    prefix = "%s/%s/%s/" % (outer, middle, inner)

                    files.append(prefix)

                    files.extend([prefix + str(foo) for foo in range(20)])

        self.build_tree(files)

    def make_many_commit_tree(self, directory_name='.'):

        """Create a tree with many commits.

        No files change are included.

        """

        tree = bzrdir.BzrDir.create_standalone_workingtree(directory_name)

        tree.lock_write()

        tree.branch.lock_write()

        tree.branch.repository.lock_write()

        try:

            for i in xrange(1000):

                tree.commit('no-changes commit %d' % i)

        finally:

            try:

                try:

                    tree.branch.repository.unlock()

                finally:

                    tree.branch.unlock()

            finally:

                tree.unlock()

        return tree

    def make_heavily_merged_tree(self, directory_name='.'):

        """Create a tree in which almost every commit is a merge.

        No files change are included.  This produces two trees, 

        one of which is returned.  Except for the first commit, every

        commit in its revision-history is a merge another commit in the other

        tree.

        """

        tree = bzrdir.BzrDir.create_standalone_workingtree(directory_name)

        tree.lock_write()

        try:

            tree2 = tree.bzrdir.sprout('tree2').open_workingtree()

            tree2.lock_write()

            try:

                for i in xrange(250):

                    revision_id = tree.commit('no-changes commit %d-a' % i)

                    tree2.branch.fetch(tree.branch, revision_id)

                    tree2.set_pending_merges([revision_id])

                    revision_id = tree2.commit('no-changes commit %d-b' % i)

                    tree.branch.fetch(tree2.branch, revision_id)

                    tree.set_pending_merges([revision_id])

                tree.set_pending_merges([])

            finally:

                tree.unlock()

        finally:

            tree2.unlock()

        return tree

def test_suite():

    """Build and return a TestSuite which contains benchmark tests only."""

    testmod_names = [ \

                   'bzrlib.benchmarks.bench_add',

                   'bzrlib.benchmarks.bench_bench',

                   'bzrlib.benchmarks.bench_checkout',

                   'bzrlib.benchmarks.bench_commit',

                   'bzrlib.benchmarks.bench_inventory',

                   'bzrlib.benchmarks.bench_log',

                   'bzrlib.benchmarks.bench_osutils',

                   'bzrlib.benchmarks.bench_rocks',

                   'bzrlib.benchmarks.bench_status',

                   'bzrlib.benchmarks.bench_transform',

                   'bzrlib.benchmarks.bench_workingtree',

                   ]

    suite = TestLoader().loadTestsFromModuleNames(testmod_names) 

    # Load any benchmarks from plugins

    for name, module in plugin.all_plugins().items():

        if getattr(module, 'bench_suite', None) is not None:

            suite.addTest(module.bench_suite())

    return suite