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Viewing changes to bzrlib/tests/test_lsprof.py

  • Committer: Martin Pool
  • Date: 2009-07-10 07:14:02 UTC
  • mto: (4525.1.1 integration)
  • mto: This revision was merged to the branch mainline in revision 4526.
  • Revision ID: mbp@sourcefrog.net-20090710071402-dga5lhvdup5jeere
Rename remaining *_implementations tests

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bzrlib/tests/test_lsprof.py
 
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# Copyright (C) 2005, 2006 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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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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"""Tests for profiling data collection."""
 
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import cPickle
 
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import os
 
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import bzrlib
 
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from bzrlib import tests
 
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class _LSProfFeature(tests.Feature):
 
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    def available(self):
 
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        try:
 
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            from bzrlib import lsprof
 
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        except ImportError:
 
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            return False
 
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        else:
 
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            return True
 
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LSProfFeature = _LSProfFeature()
 
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_TXT_HEADER = "   CallCount    Recursive    Total(ms)   " + \
 
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    "Inline(ms) module:lineno(function)\n"
 
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def _junk_callable():
 
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    "A simple routine to profile."
 
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    result = sorted(['abc', 'def', 'ghi'])
 
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def _collect_stats():
 
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    "Collect and return some dummy profile data."
 
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    from bzrlib.lsprof import profile
 
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    ret, stats = profile(_junk_callable)
 
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    return stats
 
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class TestStatsSave(tests.TestCaseInTempDir):
 
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    _test_needs_features = [LSProfFeature]
 
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    def setUp(self):
 
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        super(tests.TestCaseInTempDir, self).setUp()
 
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        self.stats = _collect_stats()
 
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    def _tempfile(self, ext):
 
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        dir = self.test_dir
 
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        return bzrlib.osutils.pathjoin(dir, "tmp_profile_data." + ext)
 
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    def test_stats_save_to_txt(self):
 
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        f = self._tempfile("txt")
 
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        self.stats.save(f)
 
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        lines = open(f).readlines()
 
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        self.assertEqual(lines[0], _TXT_HEADER)
 
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    def test_stats_save_to_callgrind(self):
 
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        f = self._tempfile("callgrind")
 
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        self.stats.save(f)
 
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        lines = open(f).readlines()
 
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        self.assertEqual(lines[0], "events: Ticks\n")
 
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        f = bzrlib.osutils.pathjoin(self.test_dir, "callgrind.out.foo")
 
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        self.stats.save(f)
 
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        lines = open(f).readlines()
 
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        self.assertEqual(lines[0], "events: Ticks\n")
 
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        # Test explicit format nommination
 
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        f2 = self._tempfile("txt")
 
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        self.stats.save(f2, format="callgrind")
 
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        lines2 = open(f2).readlines()
 
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        self.assertEqual(lines2[0], "events: Ticks\n")
 
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    def test_stats_save_to_pickle(self):
 
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        f = self._tempfile("pkl")
 
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        self.stats.save(f)
 
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        data1 = cPickle.load(open(f))
 
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        self.assertEqual(type(data1), bzrlib.lsprof.Stats)