1# Copyright (C) 2010 Google Inc. All rights reserved.
2#
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4# modification, are permitted provided that the following conditions are
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27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29import unittest
30
31from webkitpy.common.thread.messagepump import MessagePump, MessagePumpDelegate
32from webkitpy.common.thread.threadedmessagequeue import ThreadedMessageQueue
33
34
35class TestDelegate(MessagePumpDelegate):
36    def __init__(self):
37        self.log = []
38
39    def schedule(self, interval, callback):
40        self.callback = callback
41        self.log.append("schedule")
42
43    def message_available(self, message):
44        self.log.append("message_available: %s" % message)
45
46    def final_message_delivered(self):
47        self.log.append("final_message_delivered")
48
49
50class MessagePumpTest(unittest.TestCase):
51
52    def test_basic(self):
53        queue = ThreadedMessageQueue()
54        delegate = TestDelegate()
55        pump = MessagePump(delegate, queue)
56        self.assertEqual(delegate.log, [
57            'schedule'
58        ])
59        delegate.callback()
60        queue.post("Hello")
61        queue.post("There")
62        delegate.callback()
63        self.assertEqual(delegate.log, [
64            'schedule',
65            'schedule',
66            'message_available: Hello',
67            'message_available: There',
68            'schedule'
69        ])
70        queue.post("More")
71        queue.post("Messages")
72        queue.stop()
73        delegate.callback()
74        self.assertEqual(delegate.log, [
75            'schedule',
76            'schedule',
77            'message_available: Hello',
78            'message_available: There',
79            'schedule',
80            'message_available: More',
81            'message_available: Messages',
82            'final_message_delivered'
83        ])
84