1 # Copyright 2014 The Chromium OS 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 common 6 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_constants 7 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_dts_test_base 8 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors 9 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ 10 import loopback_sequence 11 12 13 class cellular_MbimComplianceDTS01(mbim_dts_test_base.MbimDtsTestBase): 14 """ 15 Validation for alternate setting 1 of the communication interface. 16 17 This test validates data transfer operation for alternate setting 1 of the 18 Communication Interface. 19 20 Reference: 21 [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 28 22 http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf 23 24 """ 25 version = 1 26 27 def run_internal(self): 28 """ Run DTS_01 test. """ 29 # Precondition 30 _, _, _ = self.run_precondition(mbim_constants.NTB_FORMAT_16) 31 32 # Step 1 33 loopback = loopback_sequence.LoopbackSequence(self.device_context) 34 _, _, _, payload = loopback.run(ntb_format=mbim_constants.NTB_FORMAT_16) 35 36 # Step 2 37 # Let's check the first byte of the first received payload to verify 38 # that it is an IPv4 packet 39 if payload[0][0] != 0x45: 40 mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError, 41 'mbim1.0:3.2.1#5') 42
