← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/tests/test_strace.py

  • Committer: Aaron Bentley
  • Date: 2007-07-17 20:04:13 UTC
  • mto: (1551.19.24 Aaron's mergeable stuff)
  • mto: This revision was merged to the branch mainline in revision 2639.
  • Revision ID: abentley@panoramicfeedback.com-20070717200413-jpganazttxzryrx8
Deprecate RevisionTree.get_weave

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/tests/test_strace.py
 
1
# Copyright (C) 2007 Canonical Ltd
 
2
#   Authors: Robert Collins <robert.collins@canonical.com>
 
3
#
 
4
# This program is free software; you can redistribute it and/or modify
 
5
# it under the terms of the GNU General Public License as published by
 
6
# the Free Software Foundation; either version 2 of the License, or
 
7
# (at your option) any later version.
 
8
#
 
9
# This program is distributed in the hope that it will be useful,
 
10
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
11
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
12
# GNU General Public License for more details.
 
13
#
 
14
# You should have received a copy of the GNU General Public License
 
15
# along with this program; if not, write to the Free Software
 
16
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
17
 
 
18
"""Tests for the strace-invoking support."""
 
19
 
 
20
import errno
 
21
import subprocess
 
22
 
 
23
from bzrlib.strace import StraceFeature, strace_detailed, StraceResult
 
24
from bzrlib.tests import TestCaseWithTransport
 
25
 
 
26
 
 
27
class TestStraceFeature(TestCaseWithTransport):
 
28
 
 
29
    def test_strace_detection(self):
 
30
        """Strace is available if its runnable."""
 
31
        try:
 
32
            proc = subprocess.Popen(['strace'],
 
33
                stderr=subprocess.PIPE,
 
34
                stdout=subprocess.PIPE)
 
35
            proc.communicate()
 
36
            found_strace = True
 
37
        except OSError, e:
 
38
            if e.errno == errno.ENOENT:
 
39
                # strace is not installed
 
40
                found_strace = False
 
41
            else:
 
42
                raise
 
43
        self.assertEqual(found_strace, StraceFeature.available())
 
44
 
 
45
 
 
46
class TestStrace(TestCaseWithTransport):
 
47
 
 
48
    _test_needs_features = [StraceFeature]
 
49
 
 
50
    def test_strace_callable_is_called(self):
 
51
        output = []
 
52
        def function(positional, *args, **kwargs):
 
53
            output.append((positional, args, kwargs))
 
54
        strace_detailed(function, ["a", "b"], {"c": "c"},
 
55
                        follow_children=False)
 
56
        self.assertEqual([("a", ("b",), {"c":"c"})], output)
 
57
 
 
58
    def test_strace_callable_result(self):
 
59
        def function():
 
60
            return "foo"
 
61
        result, strace_result = strace_detailed(function,[], {},
 
62
                                                follow_children=False)
 
63
        self.assertEqual("foo", result)
 
64
        self.assertIsInstance(strace_result, StraceResult)
 
65
 
 
66
    def test_strace_result_has_raw_log(self):
 
67
        """Checks that a reasonable raw strace log was found by strace."""
 
68
        def function():
 
69
            self.build_tree(['myfile'])
 
70
        unused, result = strace_detailed(function, [], {},
 
71
                                         follow_children=False)
 
72
        self.assertContainsRe(result.raw_log, 'myfile')