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
5import common
6from autotest_lib.client.cros.cellular.mbim_compliance import mbim_constants
7from autotest_lib.client.cros.cellular.mbim_compliance import mbim_data_transfer
8from autotest_lib.client.cros.cellular.mbim_compliance import mbim_dts_test_base
9from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors
10from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
11        import loopback_sequence
12
13
14class cellular_MbimComplianceDTS0410(mbim_dts_test_base.MbimDtsTestBase):
15    """
16    Validation of wSequence after function reset.
17
18    This test verifies that function reset properly re-initializes the sequence
19    number.
20
21    Reference:
22        [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 28
23        http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf
24
25    """
26    version = 1
27
28    def run_internal(self, ntb_format):
29        """
30        Run DTS_04/DTS_10 test.
31
32        @param ntb_format: Whether to send/receive an NTB16 or NTB32 frame.
33                Possible values: NTB_FORMAT_16, NTB_FORMAT_32 (mbim_constants)
34
35        """
36        # Precondition
37        _, open_sequence, connect_sequence = self.run_precondition(ntb_format)
38
39        # Step 1
40        loopback = loopback_sequence.LoopbackSequence(self.device_context)
41        _, _, _, _ = loopback.run(ntb_format=ntb_format)
42
43        # Step 2
44        open_sequence.run(ntb_format=ntb_format)
45        connect_sequence.run()
46        mbim_data_transfer.MBIMNtb.reset_sequence_number()
47
48        # Step 3
49        nth, _, _, _ = loopback.run(ntb_format=ntb_format)
50
51        # Step 4
52        if ntb_format == mbim_constants.NTB_FORMAT_16:
53            if nth.sequence_number != 0:
54                mbim_errors.log_and_raise(
55                        mbim_errors.MBIMComplianceAssertionError,
56                        'ncm1.0:3.2.1#3')
57        else:
58            if nth.sequence_number != 0:
59                mbim_errors.log_and_raise(
60                        mbim_errors.MBIMComplianceAssertionError,
61                        'ncm1.0:3.2.2#3')
62