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      1 #!/usr/bin/env python3.4
      2 #
      3 #   Copyright 2016 - The Android Open Source Project
      4 #
      5 #   Licensed under the Apache License, Version 2.0 (the "License");
      6 #   you may not use this file except in compliance with the License.
      7 #   You may obtain a copy of the License at
      8 #
      9 #       http://www.apache.org/licenses/LICENSE-2.0
     10 #
     11 #   Unless required by applicable law or agreed to in writing, software
     12 #   distributed under the License is distributed on an "AS IS" BASIS,
     13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 #   See the License for the specific language governing permissions and
     15 #   limitations under the License.
     16 
     17 import mock
     18 import socket
     19 import unittest
     20 
     21 from acts.controllers.utils_lib import host_utils
     22 
     23 
     24 class ActsHostUtilsTest(unittest.TestCase):
     25     """This test class has unit tests for the implementation of everything
     26     under acts.controllers.adb.
     27     """
     28 
     29     def test_is_port_available_positive(self):
     30         # Unfortunately, we cannot do this test reliably for SOCK_STREAM
     31         # because the kernel allow this socket to linger about for some
     32         # small amount of time.  We're not using SO_REUSEADDR because we
     33         # are working around behavior on darwin where binding to localhost
     34         # on some port and then binding again to the wildcard address
     35         # with SO_REUSEADDR seems to be allowed.
     36         test_s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
     37         test_s.bind(('localhost', 0))
     38         port = test_s.getsockname()[1]
     39         test_s.close()
     40         self.assertTrue(host_utils.is_port_available(port))
     41 
     42     def test_detects_udp_port_in_use(self):
     43         test_s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
     44         test_s.bind(('localhost', 0))
     45         port = test_s.getsockname()[1]
     46         try:
     47             self.assertFalse(host_utils.is_port_available(port))
     48         finally:
     49             test_s.close()
     50 
     51     def test_detects_tcp_port_in_use(self):
     52         test_s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     53         test_s.bind(('localhost', 0))
     54         port = test_s.getsockname()[1]
     55         try:
     56             self.assertFalse(host_utils.is_port_available(port))
     57         finally:
     58             test_s.close()
     59 
     60 
     61 if __name__ == "__main__":
     62     unittest.main()
     63