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# Copyright 2009-2017 Wander Lairson Costa
# Copyright 2009-2021 PyUSB contributors
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import utils
import usb.backend
from usb.core import find
from usb._debug import methodtrace
import usb.util
import unittest
import devinfo
class _DeviceDescriptor(object):
def __init__(self, idVendor, idProduct):
self.bLength = 18
self.bDescriptorType = usb.util.DESC_TYPE_DEVICE
self.bcdUSB = 0x0200
self.idVendor = idVendor
self.idProduct = idProduct
self.bcdDevice = 0x0001
self.iManufacturer = 0
self.iProduct = 0
self.iSerialNumber = 0
self.bNumConfigurations = 0
self.bMaxPacketSize0 = 64
self.bDeviceClass = 0xff
self.bDeviceSubClass = 0xff
self.bDeviceProtocol = 0xff
self.bus = 1
self.address = 1
self.port_number = None
self.port_numbers = None
self.speed = None
# We are only interested in test usb.find() function, we don't need
# to implement all IBackend stuff
class _MyBackend(usb.backend.IBackend):
def __init__(self):
self.devices = [_DeviceDescriptor(devinfo.ID_VENDOR, p) for p in range(4)]
def enumerate_devices(self):
return range(len(self.devices))
def get_device_descriptor(self, dev):
return self.devices[dev]
class FindTest(unittest.TestCase):
@methodtrace(utils.logger)
def test_find(self):
b = _MyBackend()
self.assertEqual(find(backend=b, idVendor=1), None)
self.assertNotEqual(find(backend=b, idProduct=1), None)
self.assertEqual(len(tuple(find(find_all=True, backend=b))), len(b.devices))
self.assertEqual(len(tuple(find(find_all=True, backend=b, idProduct=1))), 1)
self.assertEqual(len(tuple(find(find_all=True, backend=b, idVendor=1))), 0)
self.assertEqual(
len(tuple(find(
find_all=True,
backend=b,
custom_match = lambda d: d.idProduct==1))),
1)
self.assertEqual(
len(tuple(
find(
find_all=True,
backend=b,
custom_match = lambda d: d.idVendor==devinfo.ID_VENDOR,
idProduct=1))),
1)
def get_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(FindTest))
return suite
if __name__ == '__main__':
utils.run_tests(get_suite())
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