/brz/remove-bazaar

# 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 version 2 as published by

# the Free Software Foundation.

#

# 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

"""Tests for bzr bundle performance."""

import os

from StringIO import StringIO

from bzrlib.benchmarks import Benchmark

from bzrlib.workingtree import WorkingTree

from bzrlib.branch import Branch

from bzrlib.bundle.serializer import write_bundle

from bzrlib.revisionspec import RevisionSpec

class BundleBenchmark(Benchmark):

    """

    The bundle tests should (also) be done at a lower level with

    direct call to the bzrlib."""

    def test_create_bundle_known_kernel_like_tree(self):

        """

        Create a bundle for a kernel sized tree with no ignored, unknowns,

        or added and one commit.""" 

        self.make_kernel_like_tree()

        self.run_bzr('add')

        self.run_bzr('commit', '-m', 'initial import')

        self.time(self.run_bzr, 'bundle', '--revision', '..-1')

    def test_create_bundle_many_commit_tree (self):

        """

        Create a bundle for a tree with many commits but no changes.""" 

        self.make_many_commit_tree()

        self.time(self.run_bzr, 'bundle', '--revision', '..-1')

    def test_create_bundle_heavily_merged_tree(self):

        """

        Create a bundle for a heavily merged tree.""" 

        self.make_heavily_merged_tree()

        self.time(self.run_bzr, 'bundle', '--revision', '..-1')

    def test_apply_bundle_known_kernel_like_tree(self):

        """

        Create a bundle for a kernel sized tree with no ignored, unknowns,

        or added and one commit.""" 

        self.make_kernel_like_tree()

        self.run_bzr('add')

        self.run_bzr('commit', '-m', 'initial import')

        self.run_bzr('branch', '.', '../branch_a')

        self.run_bzr('bundle', '--revision', '..-1')

        f = file('../bundle', 'wb')

        try:

            f.write(self.run_bzr('bundle', '--revision', '..-1')[0])

        finally:

            f.close()

        os.chdir('../branch_a')

        self.time(self.run_bzr, 'merge', '../bundle')

class BundleLibraryLevelBenchmark(Benchmark):

    def make_parametrized_tree(self, num_files, num_revisions,

                               num_files_in_bundle):

        """Create a tree with given parameters. Always creates 2 levels of

        directories with the given number of files. Then the given number of

        revisions are created, changing some lines in one files in each

        revision. Only num_files_in_bundle files are changed in these

        revisions.

        :param num_files: number of files in tree

        :param num_revisions: number of revisions

        :param num_files_in_bundle: number of files changed in the revisions

        """

        # create files

        directories = []

        files = []

        count = 0

        for outer in range(num_files // 64 + 1):

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

            for middle in range(8):

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

                directories.append(prefix)

                for filename in range(min(8, num_files - count)):

                    count += 1

                    files.append(prefix + str(filename))

        self.run_bzr('init')

        self.build_tree(directories + files)

        for d in directories:

            self.run_bzr('add', d)

        self.run_bzr('commit', '-m', 'initial repo layout')

        # create revisions

        affected_files = files[:num_files_in_bundle]

        count = 0

        for changes_file in range(num_revisions // num_files_in_bundle + 1):

            for f in affected_files:

                count += 1

                if count >= num_revisions:

                    break

                content = "\n".join([str(i) for i in range(changes_file)] +

                                    [str(changes_file)] * 5) + "\n"

                self.build_tree_contents([(f, content)])

                self.run_bzr("commit", '-m', 'some changes')

        assert count >= num_revisions

    for treesize, treesize_h in [(5, "small"), (100, "moderate"),

                                 (1000, "big")]:

        for bundlefiles, bundlefiles_h in [(5, "few"), (100, "some"),

                                           (1000, "many")]:

            if bundlefiles > treesize:

                continue

            for num_revisions in [1, 500, 1000]:

                code = """

def test_%s_files_%s_tree_%s_revision(self):

    self.make_parametrized_tree(%s, %s, %s)

    branch, _ = Branch.open_containing(".")

    revision_history = branch.revision_history()

    bundle_text = StringIO()

    self.time(write_bundle, branch.repository, revision_history[-1],

              None, bundle_text)""" % (

                    bundlefiles_h, treesize_h, num_revisions,

                    treesize, num_revisions, bundlefiles)

              exec code