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# Copyright 2015 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import common
from autotest_lib.client.cros.cellular.mbim_compliance \
import mbim_command_message
from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors
from autotest_lib.client.cros.cellular.mbim_compliance import mbim_test_base
from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
import get_descriptors_sequence
from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
import mbim_cid_device_caps_sequence
from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
import mbim_open_generic_sequence
class cellular_MbimComplianceCM15(mbim_test_base.MbimTestBase):
"""
CM_15 Validation of message fragmentation ability.
This test verifies that the function follows the rules of control message
fragmentation.
Reference:
[1] Universal Serial Bus Communication Class MBIM Compliance Testing: 43
http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf
"""
version = 1
def run_internal(self):
""" Run CM_15 test. """
# Precondition
descriptors = get_descriptors_sequence.GetDescriptorsSequence(
self.device_context).run()
self.device_context.update_descriptor_cache(descriptors)
open_sequence = mbim_open_generic_sequence.MBIMOpenGenericSequence(
self.device_context)
open_sequence.run(max_control_transfer_size=64)
# Step 1
caps_sequence = mbim_cid_device_caps_sequence.MBIMCIDDeviceCapsSequence(
self.device_context)
_, response_message = caps_sequence.run()
if not isinstance(response_message,
mbim_command_message.MBIMDeviceCapsInfo):
mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError,
'mbim1.0:9.2')
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