/brz/remove-bazaar

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Viewing changes to bzrlib/tests/test_strace.py

  • Committer: John Arbash Meinel
  • Date: 2009-06-18 18:18:36 UTC
  • mto: This revision was merged to the branch mainline in revision 4461.
  • Revision ID: john@arbash-meinel.com-20090618181836-biodfkat9a8eyzjz
The new add_inventory_by_delta is returning a CHKInventory when mapping from NULL
Which is completely valid, but 'broke' one of the tests.
So to fix it, changed the test to use CHKInventories on both sides, and add an __eq__
member. The nice thing is that CHKInventory.__eq__ is fairly cheap, since it only
has to check the root keys.

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bzrlib/tests/test_strace.py
 
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# Copyright (C) 2007 Canonical Ltd
 
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#   Authors: Robert Collins <robert.collins@canonical.com>
 
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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 the strace-invoking support."""
 
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import errno
 
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import subprocess
 
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import threading
 
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from bzrlib import (
 
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    tests,
 
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    )
 
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from bzrlib.strace import StraceFeature, strace_detailed, StraceResult
 
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class TestStraceFeature(tests.TestCaseWithTransport):
 
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    def test_strace_detection(self):
 
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        """Strace is available if its runnable."""
 
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        try:
 
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            proc = subprocess.Popen(['strace'],
 
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                stderr=subprocess.PIPE,
 
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                stdout=subprocess.PIPE)
 
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            proc.communicate()
 
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            found_strace = True
 
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        except OSError, e:
 
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            if e.errno == errno.ENOENT:
 
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                # strace is not installed
 
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                found_strace = False
 
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            else:
 
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                raise
 
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        self.assertEqual(found_strace, StraceFeature.available())
 
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class TestStrace(tests.TestCaseWithTransport):
 
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    _test_needs_features = [StraceFeature]
 
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    def _check_threads(self):
 
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        # For bug #226769, it was decided that the strace tests should not be
 
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        # run when more than one thread is active. A lot of tests are currently
 
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        # leaking threads for good or bad reasons, once they are fixed or
 
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        # strace itself is fixed (bug #103133), we can get rid of the
 
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        # restriction.
 
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        active = threading.activeCount()
 
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        if active > 1: # There is always the main thread at least
 
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            raise tests.KnownFailure(
 
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                '%d active threads, bug #103133 needs to be fixed.' % active)
 
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    def test_strace_callable_is_called(self):
 
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        self._check_threads()
 
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        output = []
 
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        def function(positional, *args, **kwargs):
 
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            output.append((positional, args, kwargs))
 
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        strace_detailed(function, ["a", "b"], {"c": "c"},
 
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                        follow_children=False)
 
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        self.assertEqual([("a", ("b",), {"c":"c"})], output)
 
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    def test_strace_callable_result(self):
 
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        self._check_threads()
 
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        def function():
 
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            return "foo"
 
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        result, strace_result = strace_detailed(function,[], {},
 
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                                                follow_children=False)
 
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        self.assertEqual("foo", result)
 
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        self.assertIsInstance(strace_result, StraceResult)
 
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    def test_strace_result_has_raw_log(self):
 
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        """Checks that a reasonable raw strace log was found by strace."""
 
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        self._check_threads()
 
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        def function():
 
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            self.build_tree(['myfile'])
 
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        unused, result = strace_detailed(function, [], {},
 
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                                         follow_children=False)
 
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        self.assertContainsRe(result.raw_log, 'myfile')