src/mojo/python/tests/system_unittest.py

   1 # Copyright 2014 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 import random
   6 import sys
   7 import time
   8 import unittest
   9
  10 # pylint: disable=F0401
  11 import mojo.embedder
  12 from mojo import system
  13
  14 DATA_SIZE = 1024
  15
  16
  17 def _GetRandomBuffer(size):
  18   random.seed(size)
  19   return bytearray(''.join(chr(random.randint(0, 255)) for i in xrange(size)))
  20
  21
  22 class BaseMojoTest(unittest.TestCase):
  23
  24   def setUp(self):
  25     mojo.embedder.Init()
  26
  27
  28 class CoreTest(BaseMojoTest):
  29
  30   def testResults(self):
  31     self.assertEquals(system.RESULT_OK, 0)
  32     self.assertLess(system.RESULT_CANCELLED, 0)
  33     self.assertLess(system.RESULT_UNKNOWN, 0)
  34     self.assertLess(system.RESULT_INVALID_ARGUMENT, 0)
  35     self.assertLess(system.RESULT_DEADLINE_EXCEEDED, 0)
  36     self.assertLess(system.RESULT_NOT_FOUND, 0)
  37     self.assertLess(system.RESULT_ALREADY_EXISTS, 0)
  38     self.assertLess(system.RESULT_PERMISSION_DENIED, 0)
  39     self.assertLess(system.RESULT_RESOURCE_EXHAUSTED, 0)
  40     self.assertLess(system.RESULT_FAILED_PRECONDITION, 0)
  41     self.assertLess(system.RESULT_ABORTED, 0)
  42     self.assertLess(system.RESULT_OUT_OF_RANGE, 0)
  43     self.assertLess(system.RESULT_UNIMPLEMENTED, 0)
  44     self.assertLess(system.RESULT_INTERNAL, 0)
  45     self.assertLess(system.RESULT_UNAVAILABLE, 0)
  46     self.assertLess(system.RESULT_DATA_LOSS, 0)
  47     self.assertLess(system.RESULT_BUSY, 0)
  48     self.assertLess(system.RESULT_SHOULD_WAIT, 0)
  49
  50   def testConstants(self):
  51     self.assertGreaterEqual(system.DEADLINE_INDEFINITE, 0)
  52     self.assertGreaterEqual(system.HANDLE_SIGNAL_NONE, 0)
  53     self.assertGreaterEqual(system.HANDLE_SIGNAL_READABLE, 0)
  54     self.assertGreaterEqual(system.HANDLE_SIGNAL_WRITABLE, 0)
  55     self.assertGreaterEqual(system.WRITE_MESSAGE_FLAG_NONE, 0)
  56     self.assertGreaterEqual(system.READ_MESSAGE_FLAG_NONE, 0)
  57     self.assertGreaterEqual(system.READ_MESSAGE_FLAG_MAY_DISCARD, 0)
  58     self.assertGreaterEqual(system.WRITE_DATA_FLAG_NONE, 0)
  59     self.assertGreaterEqual(system.WRITE_DATA_FLAG_ALL_OR_NONE, 0)
  60     self.assertGreaterEqual(system.READ_DATA_FLAG_NONE, 0)
  61     self.assertGreaterEqual(system.READ_DATA_FLAG_ALL_OR_NONE, 0)
  62     self.assertGreaterEqual(system.READ_DATA_FLAG_DISCARD, 0)
  63     self.assertGreaterEqual(system.READ_DATA_FLAG_QUERY, 0)
  64     self.assertGreaterEqual(system.MAP_BUFFER_FLAG_NONE, 0)
  65
  66   def testGetTimeTicksNow(self):
  67     pt1 = time.time()
  68     v1 = system.GetTimeTicksNow()
  69     time.sleep(1e-3)
  70     v2 = system.GetTimeTicksNow()
  71     pt2 = time.time()
  72     self.assertGreater(v1, 0)
  73     self.assertGreater(v2, v1 + 1000)
  74     self.assertGreater(1e6 * (pt2 - pt1), v2 - v1)
  75
  76   def _testHandlesCreation(self, *args):
  77     for handle in args:
  78       self.assertTrue(handle.IsValid())
  79       handle.Close()
  80       self.assertFalse(handle.IsValid())
  81
  82   def _TestMessageHandleCreation(self, handles):
  83     self._testHandlesCreation(handles.handle0, handles.handle1)
  84
  85   def testCreateMessagePipe(self):
  86     self._TestMessageHandleCreation(system.MessagePipe())
  87
  88   def testCreateMessagePipeWithNoneOptions(self):
  89     self._TestMessageHandleCreation(system.MessagePipe(None))
  90
  91   def testCreateMessagePipeWithOptions(self):
  92     self._TestMessageHandleCreation(
  93         system.MessagePipe(system.CreateMessagePipeOptions()))
  94
  95   def testWaitOverMessagePipe(self):
  96     handles = system.MessagePipe()
  97     handle = handles.handle0
  98
  99     self.assertEquals(system.RESULT_OK, handle.Wait(
 100         system.HANDLE_SIGNAL_WRITABLE, system.DEADLINE_INDEFINITE))
 101     self.assertEquals(system.RESULT_DEADLINE_EXCEEDED,
 102                       handle.Wait(system.HANDLE_SIGNAL_READABLE, 0))
 103
 104     handles.handle1.WriteMessage()
 105
 106     self.assertEquals(
 107         system.RESULT_OK,
 108         handle.Wait(
 109             system.HANDLE_SIGNAL_READABLE,
 110             system.DEADLINE_INDEFINITE))
 111
 112   def testWaitOverManyMessagePipe(self):
 113     handles = system.MessagePipe()
 114     handle0 = handles.handle0
 115     handle1 = handles.handle1
 116
 117     self.assertEquals(
 118         0,
 119         system.WaitMany(
 120             [(handle0, system.HANDLE_SIGNAL_WRITABLE),
 121              (handle1, system.HANDLE_SIGNAL_WRITABLE)],
 122             system.DEADLINE_INDEFINITE))
 123     self.assertEquals(
 124         system.RESULT_DEADLINE_EXCEEDED,
 125         system.WaitMany(
 126             [(handle0, system.HANDLE_SIGNAL_READABLE),
 127              (handle1, system.HANDLE_SIGNAL_READABLE)], 0))
 128
 129     handle0.WriteMessage()
 130
 131     self.assertEquals(
 132         1,
 133         system.WaitMany(
 134             [(handle0, system.HANDLE_SIGNAL_READABLE),
 135              (handle1, system.HANDLE_SIGNAL_READABLE)],
 136             system.DEADLINE_INDEFINITE))
 137
 138   def testSendBytesOverMessagePipe(self):
 139     handles = system.MessagePipe()
 140     data = _GetRandomBuffer(DATA_SIZE)
 141     handles.handle0.WriteMessage(data)
 142     (res, buffers, next_message) = handles.handle1.ReadMessage()
 143     self.assertEquals(system.RESULT_RESOURCE_EXHAUSTED, res)
 144     self.assertEquals(None, buffers)
 145     self.assertEquals((DATA_SIZE, 0), next_message)
 146     result = bytearray(DATA_SIZE)
 147     (res, buffers, next_message) = handles.handle1.ReadMessage(result)
 148     self.assertEquals(system.RESULT_OK, res)
 149     self.assertEquals(None, next_message)
 150     self.assertEquals((data, []), buffers)
 151
 152   def testSendEmptyDataOverMessagePipe(self):
 153     handles = system.MessagePipe()
 154     handles.handle0.WriteMessage(None)
 155     (res, buffers, next_message) = handles.handle1.ReadMessage()
 156
 157     self.assertEquals(system.RESULT_OK, res)
 158     self.assertEquals(None, next_message)
 159     self.assertEquals((None, []), buffers)
 160
 161   def testSendHandleOverMessagePipe(self):
 162     handles = system.MessagePipe()
 163     handles_to_send = system.MessagePipe()
 164     handles.handle0.WriteMessage(handles=[handles_to_send.handle0,
 165                                            handles_to_send.handle1])
 166     (res, buffers, next_message) = handles.handle1.ReadMessage(
 167         max_number_of_handles=2)
 168
 169     self.assertFalse(handles_to_send.handle0.IsValid())
 170     self.assertFalse(handles_to_send.handle1.IsValid())
 171     self.assertEquals(system.RESULT_OK, res)
 172     self.assertEquals(None, next_message)
 173     self.assertEquals(None, buffers[0])
 174     self.assertEquals(2, len(buffers[1]))
 175
 176     handles = buffers[1]
 177     for handle in handles:
 178       self.assertTrue(handle.IsValid())
 179       (res, buffers, next_message) = handle.ReadMessage()
 180       self.assertEquals(system.RESULT_SHOULD_WAIT, res)
 181
 182     for handle in handles:
 183       handle.WriteMessage()
 184
 185     for handle in handles:
 186       (res, buffers, next_message) = handle.ReadMessage()
 187       self.assertEquals(system.RESULT_OK, res)
 188
 189   def _TestDataHandleCreation(self, handles):
 190     self._testHandlesCreation(
 191         handles.producer_handle, handles.consumer_handle)
 192
 193   def testCreateDataPipe(self):
 194     self._TestDataHandleCreation(system.DataPipe())
 195
 196   def testCreateDataPipeWithNoneOptions(self):
 197     self._TestDataHandleCreation(system.DataPipe(None))
 198
 199   def testCreateDataPipeWithDefaultOptions(self):
 200     self._TestDataHandleCreation(
 201         system.DataPipe(system.CreateDataPipeOptions()))
 202
 203   def testCreateDataPipeWithDiscardFlag(self):
 204     options = system.CreateDataPipeOptions()
 205     options.flags = system.CreateDataPipeOptions.FLAG_MAY_DISCARD
 206     self._TestDataHandleCreation(system.DataPipe(options))
 207
 208   def testCreateDataPipeWithElementSize(self):
 209     options = system.CreateDataPipeOptions()
 210     options.element_num_bytes = 5
 211     self._TestDataHandleCreation(system.DataPipe(options))
 212
 213   def testCreateDataPipeWithCapacity(self):
 214     options = system.CreateDataPipeOptions()
 215     options.element_capacity_num_bytes = DATA_SIZE
 216     self._TestDataHandleCreation(system.DataPipe(options))
 217
 218   def testCreateDataPipeWithIncorrectParameters(self):
 219     options = system.CreateDataPipeOptions()
 220     options.element_num_bytes = 5
 221     options.capacity_num_bytes = DATA_SIZE
 222     with self.assertRaises(system.MojoException) as cm:
 223       self._TestDataHandleCreation(system.DataPipe(options))
 224     self.assertEquals(system.RESULT_INVALID_ARGUMENT, cm.exception.mojo_result)
 225
 226   def testSendEmptyDataOverDataPipe(self):
 227     pipes = system.DataPipe()
 228     self.assertEquals((system.RESULT_OK, 0), pipes.producer_handle.WriteData())
 229     self.assertEquals(
 230         (system.RESULT_OK, None), pipes.consumer_handle.ReadData())
 231
 232   def testSendDataOverDataPipe(self):
 233     pipes = system.DataPipe()
 234     data = _GetRandomBuffer(DATA_SIZE)
 235     self.assertEquals((system.RESULT_OK, DATA_SIZE),
 236                       pipes.producer_handle.WriteData(data))
 237     self.assertEquals((system.RESULT_OK, data),
 238                       pipes.consumer_handle.ReadData(bytearray(DATA_SIZE)))
 239
 240   def testTwoPhaseWriteOnDataPipe(self):
 241     pipes = system.DataPipe()
 242     (res, buf) = pipes.producer_handle.BeginWriteData(DATA_SIZE)
 243     self.assertEquals(system.RESULT_OK, res)
 244     self.assertGreaterEqual(len(buf.buffer), DATA_SIZE)
 245     data = _GetRandomBuffer(DATA_SIZE)
 246     buf.buffer[0:DATA_SIZE] = data
 247     self.assertEquals(system.RESULT_OK, buf.End(DATA_SIZE))
 248     self.assertEquals((system.RESULT_OK, data),
 249                       pipes.consumer_handle.ReadData(bytearray(DATA_SIZE)))
 250
 251   def testTwoPhaseReadOnDataPipe(self):
 252     pipes = system.DataPipe()
 253     data = _GetRandomBuffer(DATA_SIZE)
 254     self.assertEquals((system.RESULT_OK, DATA_SIZE),
 255                       pipes.producer_handle.WriteData(data))
 256     (res, buf) = pipes.consumer_handle.BeginReadData()
 257     self.assertEquals(system.RESULT_OK, res)
 258     self.assertEquals(DATA_SIZE, len(buf.buffer))
 259     self.assertEquals(data, buf.buffer)
 260     self.assertEquals(system.RESULT_OK, buf.End(DATA_SIZE))
 261
 262   def testCreateSharedBuffer(self):
 263     self._testHandlesCreation(system.CreateSharedBuffer(DATA_SIZE))
 264
 265   def testCreateSharedBufferWithNoneOptions(self):
 266     self._testHandlesCreation(system.CreateSharedBuffer(DATA_SIZE, None))
 267
 268   def testCreateSharedBufferWithDefaultOptions(self):
 269     self._testHandlesCreation(
 270         system.CreateSharedBuffer(
 271             DATA_SIZE,
 272             system.CreateSharedBufferOptions()))
 273
 274   def testDuplicateSharedBuffer(self):
 275     handle = system.CreateSharedBuffer(DATA_SIZE)
 276     self._testHandlesCreation(handle.Duplicate())
 277
 278   def testDuplicateSharedBufferWithNoneOptions(self):
 279     handle = system.CreateSharedBuffer(DATA_SIZE)
 280     self._testHandlesCreation(handle.Duplicate(None))
 281
 282   def testDuplicateSharedBufferWithDefaultOptions(self):
 283     handle = system.CreateSharedBuffer(DATA_SIZE)
 284     self._testHandlesCreation(
 285         handle.Duplicate(system.DuplicateSharedBufferOptions()))
 286
 287   def testSendBytesOverSharedBuffer(self):
 288     handle = system.CreateSharedBuffer(DATA_SIZE)
 289     duplicated = handle.Duplicate()
 290     data = _GetRandomBuffer(DATA_SIZE)
 291     (res1, buf1) = handle.Map(0, DATA_SIZE)
 292     (res2, buf2) = duplicated.Map(0, DATA_SIZE)
 293     self.assertEquals(system.RESULT_OK, res1)
 294     self.assertEquals(system.RESULT_OK, res2)
 295     self.assertEquals(DATA_SIZE, len(buf1.buffer))
 296     self.assertEquals(DATA_SIZE, len(buf2.buffer))
 297     self.assertEquals(buf1.buffer, buf2.buffer)
 298
 299     buf1.buffer[:] = data
 300     self.assertEquals(data, buf1.buffer)
 301     self.assertEquals(data, buf2.buffer)
 302     self.assertEquals(buf1.buffer, buf2.buffer)
 303
 304
 305 if __name__ == '__main__':
 306   suite = unittest.TestLoader().loadTestsFromTestCase(CoreTest)
 307   test_results = unittest.TextTestRunner(verbosity=0).run(suite)
 308   if not test_results.wasSuccessful():
 309     sys.exit(1)
 310   sys.exit(0)