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Viewing changes to bzrlib/tests/test_lsprof.py

  • Committer: Robert Collins
  • Date: 2010-05-06 23:41:35 UTC
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100506234135-yivbzczw1sejxnxc
Lock methods on ``Tree``, ``Branch`` and ``Repository`` are now
expected to return an object which can be used to unlock them. This reduces
duplicate code when using cleanups. The previous 'tokens's returned by
``Branch.lock_write`` and ``Repository.lock_write`` are now attributes
on the result of the lock_write. ``repository.RepositoryWriteLockResult``
and ``branch.BranchWriteLockResult`` document this. (Robert Collins)

``log._get_info_for_log_files`` now takes an add_cleanup callable.
(Robert Collins)

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bzrlib/tests/test_lsprof.py
1
 
# Copyright (C) 2007, 2009, 2010, 2011 Canonical Ltd
 
1
# Copyright (C) 2005, 2006 Canonical Ltd
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2
#
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3
# This program is free software; you can redistribute it and/or modify
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4
# it under the terms of the GNU General Public License as published by
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"""Tests for profiling data collection."""
18
18
 
19
19
 
20
 
try:
21
 
    import cPickle as pickle
22
 
except ImportError:
23
 
    import pickle
24
 
import threading
25
 
 
26
 
from .. import (
27
 
    errors,
28
 
    osutils,
29
 
    tests,
30
 
    )
31
 
from ..tests import features
32
 
 
33
 
 
34
 
lsprof = features.lsprof_feature.module
 
20
import cPickle
 
21
import os
 
22
 
 
23
import bzrlib
 
24
from bzrlib import tests
 
25
 
 
26
 
 
27
class _LSProfFeature(tests.Feature):
 
28
 
 
29
    def available(self):
 
30
        try:
 
31
            from bzrlib import lsprof
 
32
        except ImportError:
 
33
            return False
 
34
        else:
 
35
            return True
 
36
 
 
37
 
 
38
LSProfFeature = _LSProfFeature()
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39
 
36
40
 
37
41
_TXT_HEADER = "   CallCount    Recursive    Total(ms)   " + \
45
49
 
46
50
def _collect_stats():
47
51
    "Collect and return some dummy profile data."
48
 
    ret, stats = lsprof.profile(_junk_callable)
 
52
    from bzrlib.lsprof import profile
 
53
    ret, stats = profile(_junk_callable)
49
54
    return stats
50
55
 
51
56
 
52
 
class TestStats(tests.TestCaseInTempDir):
 
57
class TestStatsSave(tests.TestCaseInTempDir):
53
58
 
54
 
    _test_needs_features = [features.lsprof_feature]
 
59
    _test_needs_features = [LSProfFeature]
55
60
 
56
61
    def setUp(self):
57
62
        super(tests.TestCaseInTempDir, self).setUp()
58
63
        self.stats = _collect_stats()
59
64
 
60
 
    def _temppath(self, ext):
61
 
        return osutils.pathjoin(self.test_dir, "tmp_profile_data." + ext)
62
 
 
63
 
    def test_save_to_txt(self):
64
 
        path = self._temppath("txt")
65
 
        self.stats.save(path)
66
 
        with open(path) as f:
67
 
            lines = f.readlines()
68
 
            self.assertEqual(lines[0], _TXT_HEADER)
69
 
 
70
 
    def test_save_to_callgrind(self):
71
 
        path1 = self._temppath("callgrind")
72
 
        self.stats.save(path1)
73
 
        with open(path1) as f:
74
 
            self.assertEqual(f.readline(), "events: Ticks\n")
75
 
 
76
 
        path2 = osutils.pathjoin(self.test_dir, "callgrind.out.foo")
77
 
        self.stats.save(path2)
78
 
        with open(path2) as f:
79
 
            self.assertEqual(f.readline(), "events: Ticks\n")
80
 
 
 
65
    def _tempfile(self, ext):
 
66
        dir = self.test_dir
 
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        return bzrlib.osutils.pathjoin(dir, "tmp_profile_data." + ext)
 
68
 
 
69
    def test_stats_save_to_txt(self):
 
70
        f = self._tempfile("txt")
 
71
        self.stats.save(f)
 
72
        lines = open(f).readlines()
 
73
        self.assertEqual(lines[0], _TXT_HEADER)
 
74
 
 
75
    def test_stats_save_to_callgrind(self):
 
76
        f = self._tempfile("callgrind")
 
77
        self.stats.save(f)
 
78
        lines = open(f).readlines()
 
79
        self.assertEqual(lines[0], "events: Ticks\n")
 
80
        f = bzrlib.osutils.pathjoin(self.test_dir, "callgrind.out.foo")
 
81
        self.stats.save(f)
 
82
        lines = open(f).readlines()
 
83
        self.assertEqual(lines[0], "events: Ticks\n")
81
84
        # Test explicit format nommination
82
 
        path3 = self._temppath("txt")
83
 
        self.stats.save(path3, format="callgrind")
84
 
        with open(path3) as f:
85
 
            self.assertEqual(f.readline(), "events: Ticks\n")
86
 
 
87
 
    def test_save_to_pickle(self):
88
 
        path = self._temppath("pkl")
89
 
        self.stats.save(path)
90
 
        with open(path, 'rb') as f:
91
 
            data1 = pickle.load(f)
92
 
            self.assertEqual(type(data1), lsprof.Stats)
93
 
 
94
 
    def test_sort(self):
95
 
        self.stats.sort()
96
 
        code_list = [d.inlinetime for d in self.stats.data]
97
 
        self.assertEqual(code_list, sorted(code_list, reverse=True))
98
 
 
99
 
    def test_sort_totaltime(self):
100
 
        self.stats.sort('totaltime')
101
 
        code_list = [d.totaltime for d in self.stats.data]
102
 
        self.assertEqual(code_list, sorted(code_list, reverse=True))
103
 
 
104
 
    def test_sort_code(self):
105
 
        """Cannot sort by code object would need to get filename etc."""
106
 
        self.assertRaises(ValueError, self.stats.sort, 'code')
 
85
        f2 = self._tempfile("txt")
 
86
        self.stats.save(f2, format="callgrind")
 
87
        lines2 = open(f2).readlines()
 
88
        self.assertEqual(lines2[0], "events: Ticks\n")
 
89
 
 
90
    def test_stats_save_to_pickle(self):
 
91
        f = self._tempfile("pkl")
 
92
        self.stats.save(f)
 
93
        data1 = cPickle.load(open(f))
 
94
        self.assertEqual(type(data1), bzrlib.lsprof.Stats)
107
95
 
108
96
 
109
97
class TestBzrProfiler(tests.TestCase):
110
98
 
111
 
    _test_needs_features = [features.lsprof_feature]
 
99
    _test_needs_features = [LSProfFeature]
112
100
 
113
101
    def test_start_call_stuff_stop(self):
114
 
        profiler = lsprof.BzrProfiler()
 
102
        profiler = bzrlib.lsprof.BzrProfiler()
115
103
        profiler.start()
116
104
        try:
117
105
            def a_function():
123
111
        lines = [str(data) for data in stats.data]
124
112
        lines = [line for line in lines if 'a_function' in line]
125
113
        self.assertLength(1, lines)
126
 
 
127
 
    def test_block_0(self):
128
 
        # When profiler_block is 0, reentrant profile requests fail.
129
 
        self.overrideAttr(lsprof.BzrProfiler, 'profiler_block', 0)
130
 
        inner_calls = []
131
 
 
132
 
        def inner():
133
 
            profiler = lsprof.BzrProfiler()
134
 
            self.assertRaises(errors.BzrError, profiler.start)
135
 
            inner_calls.append(True)
136
 
        lsprof.profile(inner)
137
 
        self.assertLength(1, inner_calls)
138
 
 
139
 
    def test_block_1(self):
140
 
        # When profiler_block is 1, concurrent profiles serialise.
141
 
        # This is tested by manually acquiring the profiler lock, then
142
 
        # starting a thread that tries to profile, and releasing the lock.
143
 
        # We know due to test_block_0 that two profiles at once hit the lock,
144
 
        # so while this isn't perfect (we'd want a callback on the lock being
145
 
        # entered to allow lockstep evaluation of the actions), its good enough
146
 
        # to be confident regressions would be caught. Alternatively, if this
147
 
        # is flakey, a fake Lock object can be used to trace the calls made.
148
 
        calls = []
149
 
 
150
 
        def profiled():
151
 
            calls.append('profiled')
152
 
 
153
 
        def do_profile():
154
 
            lsprof.profile(profiled)
155
 
            calls.append('after_profiled')
156
 
        thread = threading.Thread(target=do_profile)
157
 
        lsprof.BzrProfiler.profiler_lock.acquire()
158
 
        try:
159
 
            try:
160
 
                thread.start()
161
 
            finally:
162
 
                lsprof.BzrProfiler.profiler_lock.release()
163
 
        finally:
164
 
            thread.join()
165
 
        self.assertLength(2, calls)