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| 1 #!/usr/bin/env python | |
| 2 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | |
| 3 # | |
| 4 # Use of this source code is governed by a BSD-style license | |
| 5 # that can be found in the LICENSE file in the root of the source | |
| 6 # tree. An additional intellectual property rights grant can be found | |
| 7 # in the file PATENTS. All contributing project authors may | |
| 8 # be found in the AUTHORS file in the root of the source tree. | |
| 9 | |
| 10 import glob | |
| 11 import unittest | |
| 12 from video_analysis import FindUsbPortForV4lDevices | |
| 13 | |
| 14 | |
| 15 class RunVideoAnalysisTest(unittest.TestCase): | |
| 16 def SetGlobPath(self, path1, path2): | |
| 17 self.path1 = path1 | |
| 18 self.path2 = path2 | |
| 19 | |
| 20 def setUp(self): | |
| 21 self.path1 = '' | |
| 22 self.path2 = '' | |
| 23 self.request_nbr = 1 | |
| 24 | |
| 25 def GlobMock(string): | |
| 26 # Eat incoming string. | |
| 27 del string | |
| 28 if self.request_nbr == 1: | |
| 29 self.request_nbr += 1 | |
| 30 return self.path1 | |
| 31 else: | |
| 32 self.request_nbr = 1 | |
| 33 return self.path2 | |
| 34 | |
| 35 # Override the glob function with our own that returns a string set by the | |
| 36 # test. | |
| 37 glob.glob = GlobMock | |
| 38 | |
| 39 # Verifies that the correct USB id is returned. | |
| 40 def testFindUSBPortForV4lDevices(self): | |
| 41 short_path1 = ('/sys/bus/usb/devices/usb1/1-1/driver/4-4/4-4:1.0/' | |
| 42 'video4linux/video0') | |
| 43 short_path2 = ('/sys/bus/usb/devices/usb1/1-1/driver/4-3/4-3:1.0/' | |
| 44 'video4linux/video1') | |
| 45 self.SetGlobPath(short_path1, short_path2) | |
| 46 short_usb_ids = ['4-4', '4-3'] | |
| 47 self.assertEqual(FindUsbPortForV4lDevices('video0', 'video1'), | |
| 48 short_usb_ids) | |
| 49 | |
| 50 long_path1 = ('/sys/bus/usb/devices/usb1/1-1/driver/3-3/3-3.1:1.0/' | |
| 51 'video4linux/video0') | |
| 52 long_path2 = ('/sys/bus/usb/devices/usb1/1-1/driver/3-2/3-2.1:1.0/' | |
| 53 'video4linux/video1') | |
| 54 self.SetGlobPath(long_path1, long_path2) | |
| 55 long_usb_ids = ['3-3.1', '3-2.1'] | |
| 56 self.assertEqual(FindUsbPortForV4lDevices('video0', 'video1'), long_usb_ids) | |
| 57 | |
| 58 | |
| 59 def testFindUSBPortForV4lDevicesNoDevice(self): | |
| 60 no_device_found = ('') | |
| 61 v4l_device = ('/sys/bus/usb/devices/usb1/1-1/driver/3-2/3-2.1:1.0/' | |
| 62 'video4linux/video1') | |
| 63 self.SetGlobPath(no_device_found, v4l_device) | |
| 64 empty_list = [] | |
| 65 self.assertEqual(FindUsbPortForV4lDevices('video0', 'video1'), empty_list) | |
| 66 | |
| 67 | |
| 68 if __name__ == "__main__": | |
| 69 unittest.main() | |
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