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      1 # Copyright 2015 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_channel
      7 from autotest_lib.client.cros.cellular.mbim_compliance \
      8         import mbim_command_message
      9 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_constants
     10 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors
     11 from autotest_lib.client.cros.cellular.mbim_compliance \
     12         import mbim_message_request
     13 from autotest_lib.client.cros.cellular.mbim_compliance \
     14         import mbim_message_response
     15 from autotest_lib.client.cros.cellular.mbim_compliance \
     16         import mbim_test_base
     17 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
     18         import connect_sequence
     19 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
     20         import get_descriptors_sequence
     21 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
     22         import mbim_close_sequence
     23 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
     24         import mbim_open_generic_sequence
     25 
     26 
     27 class cellular_MbimComplianceCM13(mbim_test_base.MbimTestBase):
     28     """
     29     CM_13 Validation of active context termination on function's closing.
     30 
     31     This test verifies that no any active context exists after closing of the
     32     function.
     33 
     34     Reference:
     35         [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 42
     36         http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf
     37 
     38     """
     39     version = 1
     40 
     41     def run_internal(self):
     42         """ Run CM_13 test. """
     43         # Precondition
     44         descriptors = get_descriptors_sequence.GetDescriptorsSequence(
     45                 self.device_context).run()
     46         self.device_context.update_descriptor_cache(descriptors)
     47         mbim_open_generic_sequence.MBIMOpenGenericSequence(
     48                 self.device_context).run()
     49         connect_sequence.ConnectSequence(self.device_context).run()
     50         mbim_close_sequence.MBIMCloseSequence(self.device_context).run()
     51         mbim_open_generic_sequence.MBIMOpenGenericSequence(
     52                 self.device_context).run()
     53 
     54         # Step 1
     55         device_context = self.device_context
     56         descriptor_cache = device_context.descriptor_cache
     57         command_message = mbim_command_message.MBIMConnectQuery(session_id=0)
     58         packets = mbim_message_request.generate_request_packets(
     59                 command_message,
     60                 device_context.max_control_transfer_size)
     61         channel = mbim_channel.MBIMChannel(
     62                 device_context._device,
     63                 descriptor_cache.mbim_communication_interface.bInterfaceNumber,
     64                 descriptor_cache.interrupt_endpoint.bEndpointAddress,
     65                 device_context.max_control_transfer_size)
     66         response_packets = channel.bidirectional_transaction(*packets)
     67         channel.close()
     68 
     69         # Step 2
     70         response_message = mbim_message_response.parse_response_packets(
     71                 response_packets)
     72 
     73         # Step 3
     74         if (response_message.status_codes !=
     75             mbim_constants.MBIM_STATUS_CONTEXT_NOT_ACTIVATED):
     76             mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError,
     77                                       'mbim1.0:9.3.2#3')
     78