server/site_tests/network_WiFiRoaming/005SuspendRoamWPA

# Copyright (c) 2010 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.

# This test run is designed to test that the connection manager is able
# to roam to a previously connected AP when it loses connectivity to its
# current AP on resume.  To accomplish this, we join one AP (so we are
# sure that flimflam remembers it), then join a second AP which we
# shut down while the DUT is suspended.  We sit around and observe
# if and how long it takes for the connection manager to re-acquire
# connectivity to the first AP.  We expect the DUT will resume, find
# the previous AP is gone, and then roam to the other AP.
{ "name":"SuspendRoamWPA",
  "steps":[
    [ "create",         { "type":"hostap" } ],

    # NB: use a fixed SSID so we know what to reference below
    [ "config",         { "channel":"2412", "mode":"11g",
                          "ssid": 'SuspendRoamWPA_t1',
                          "wpa":"1", "wpa_key_mgmt":"WPA-PSK",
                          "wpa_pairwise":"TKIP",
                          "wpa_passphrase":"chromeos"} ],

    # Connect to the first AP.  This just guarantees that this AP has
    # been placed in the connection manager profile.
    [ "connect",        { "security":"wpa", "psk":"chromeos" } ],
    [ "client_ping",    { "count":"10" } ],
    [ "deconfig" ],

    # Configure and connect to the second AP.
    [ "config",         { "channel":"5240", "mode":"11a",
                          "ssid_suffix": "t2",
                          "wpa":"0"} ],
    [ "connect",        { "security":"none" } ],
    [ "client_ping",    { "count":"10" } ],

    # Ask the DUT to sleep for 20 seconds while we switch things around,
    # then see how long it takes for the DUT to return the service to the
    # "ready" state.  As a result, the arguments to this command are a
    # combination of suspend and wait_service arguments.  In this case,
    # except for "suspend_time", all arguments are to wait_change.  Note
    # that the wait_change occurs AFTER the suspend, 20 seconds later in
    # this specific example.  Note also that we must specify the SSID of
    # the previous AP to wait for; otherwise this will wait for the AP
    # we just deconfig'd to come ready (and fail).
    [ "wait_service_suspend_bg",
                        { "suspend_time": "20",  # How long to sleep
                          "run_timeout":20,      # Maximum time to wait
                          "debug":True,          # Output all state changes
                          "states": [            # Wait for "ready" state
                            ('SuspendRoamWPA_t1', 'ready')
                          ] } ],

    # Locally, let's wait 10 seconds to make sure the DUT is really asleep
    # before we proceed.
    [ "sleep",          { "time":"15" } ],

    # Shut down the second AP and bring the first one back up
    [ "deconfig" ],
    [ "config",         { "channel":"2412", "mode":"11g",
                          "ssid": 'SuspendRoamWPA_t1',
                          "wpa":"1", "wpa_key_mgmt":"WPA-PSK",
                          "wpa_pairwise":"TKIP",
                          "wpa_passphrase":"chromeos"} ],

    # Wait for the DUT to wake up and return the results of wait_suspend
    [ "wait_service_suspend_end",   { } ],

    [ "client_ping",    { "count":"10" } ],

    [ "destroy" ],
  ],
}