1# Copyright (C) 2011 Google Inc. All rights reserved.
2#
3# Redistribution and use in source and binary forms, with or without
4# modification, are permitted provided that the following conditions are
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7#     * Redistributions of source code must retain the above copyright
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11# in the documentation and/or other materials provided with the
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16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29import sys
30import unittest
31
32from webkitpy.common.system import outputcapture
33from webkitpy.common.system import stack_utils
34
35
36def current_thread_id():
37    thread_id, _ = sys._current_frames().items()[0]
38    return thread_id
39
40
41class StackUtilsTest(unittest.TestCase):
42    def test_find_thread_stack_found(self):
43        thread_id = current_thread_id()
44        found_stack = stack_utils._find_thread_stack(thread_id)
45        self.assertIsNotNone(found_stack)
46
47    def test_find_thread_stack_not_found(self):
48        found_stack = stack_utils._find_thread_stack(0)
49        self.assertIsNone(found_stack)
50
51    def test_log_thread_state(self):
52        msgs = []
53
54        def logger(msg):
55            msgs.append(msg)
56
57        thread_id = current_thread_id()
58        stack_utils.log_thread_state(logger, "test-thread", thread_id,
59                                     "is tested")
60        self.assertTrue(msgs)
61
62    def test_log_traceback(self):
63        msgs = []
64
65        def logger(msg):
66            msgs.append(msg)
67
68        try:
69            raise ValueError
70        except:
71            stack_utils.log_traceback(logger, sys.exc_info()[2])
72        self.assertTrue(msgs)
73