← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/benchmarks/bench_log.py

  • Committer: Aaron Bentley
  • Date: 2006-07-10 19:23:53 UTC
  • mto: This revision was merged to the branch mainline in revision 1848.
  • Revision ID: abentley@panoramicfeedback.com-20060710192353-469477798c5c4139
Switch to John Meinel's _unescape_xml implementation

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/benchmarks/bench_log.py
 
1
# Copyright (C) 2006 by Canonical Ltd
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License version 2 as published by
 
5
# the Free Software Foundation.
 
6
#
 
7
# This program is distributed in the hope that it will be useful,
 
8
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
9
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
10
# GNU General Public License for more details.
 
11
#
 
12
# You should have received a copy of the GNU General Public License
 
13
# along with this program; if not, write to the Free Software
 
14
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
15
 
 
16
"""Tests for tree transform performance"""
 
17
 
 
18
import os
 
19
import sys
 
20
 
 
21
from bzrlib.benchmarks import Benchmark
 
22
from bzrlib.log import log_formatter, show_log
 
23
from bzrlib.osutils import pathjoin
 
24
from cStringIO import StringIO
 
25
from bzrlib.transform import TreeTransform
 
26
from bzrlib.workingtree import WorkingTree
 
27
 
 
28
class LinesDone(Exception):
 
29
    pass
 
30
 
 
31
class LineConsumer(object):
 
32
 
 
33
    def __init__(self, required_lines):
 
34
        self.required_lines = required_lines
 
35
 
 
36
    def write(self, text):
 
37
        self.required_lines -= text.count('\n')
 
38
        if self.required_lines < 0:
 
39
            raise LinesDone()
 
40
        
 
41
 
 
42
class LogBenchmark(Benchmark):
 
43
 
 
44
    def test_log(self):
 
45
        """Run log in a many-commit tree.""" 
 
46
        tree = self.make_many_commit_tree()
 
47
        lf = log_formatter('long', to_file=StringIO())
 
48
        self.time(show_log, tree.branch, lf, direction='reverse')
 
49
 
 
50
    def test_merge_log(self):
 
51
        """Run log in a tree with many merges"""
 
52
        tree = self.make_heavily_merged_tree()
 
53
        lf = log_formatter('short', to_file=StringIO())
 
54
        self.time(show_log, tree.branch, lf, direction='reverse')
 
55
 
 
56
    def test_log_screenful(self):
 
57
        """Simulate log --long|less"""
 
58
        self.screenful_tester('long')
 
59
 
 
60
    def test_log_screenful_line(self):
 
61
        """Simulate log --line|less"""
 
62
        self.screenful_tester('line')
 
63
 
 
64
    def test_log_screenful_short(self):
 
65
        """Simulate log --short|less"""
 
66
        self.screenful_tester('short')
 
67
 
 
68
    def screenful_tester(self, formatter):
 
69
        """Run show_log, but stop after 25 lines are generated"""
 
70
        tree = self.make_many_commit_tree()
 
71
        def log_screenful():
 
72
            lf = log_formatter(formatter, to_file=LineConsumer(25))
 
73
            try:
 
74
                show_log(tree.branch, lf, direction='reverse')
 
75
            except LinesDone:
 
76
                pass
 
77
            else:
 
78
                raise Exception, "LinesDone not raised"
 
79
        self.time(log_screenful)
 
80
 
 
81
    def test_cmd_log(self):
 
82
        """Test execution of the log command.""" 
 
83
        tree = self.make_many_commit_tree()
 
84
        self.time(self.run_bzr, 'log', '-r', '-4..')
 
85
 
 
86
    def test_cmd_log_subprocess(self):
 
87
        """Text startup and execution of the log command.""" 
 
88
        tree = self.make_many_commit_tree()
 
89
        self.time(self.run_bzr_subprocess, 'log', '-r', '-4..')
 
90
 
 
91
    def test_log_verbose(self):
 
92
        """'verbose' log -- shows file changes"""
 
93
        tree = self.make_many_commit_tree()
 
94
        lf = log_formatter('long', to_file=StringIO())
 
95
        self.time(show_log, tree.branch, lf, direction='reverse', verbose=True)