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iwd/autotests/testRoamRetry/stop_retry_test.py
James Prestwood 1dc4d6e9ba auto-t: update roaming tests with wait_for_object_change
Every single roaming test had one of two problems with watching the
state change between roaming --> connected. Either the test used
wait_for_object_condition to wait for 'connected' which could allow
other states in between. Or it simply used an assert. The assert
wouldn't allow other state changes, but at the cost of potentially
failing due to IWD not having made it to the 'connected' state yet.

Now we have wait_for_object_change which takes two conditions:
initial (from_str) and expected (to_str). This API will not allow
any other conditions except these, and will wait for the expected
condition before continuing. This allows roaming test to reliably
wait for the roaming --> connected state change.
2021-02-05 14:44:00 -06:00

132 lines
4.2 KiB
Python

#!/usr/bin/python3
import unittest
import sys
sys.path.append('../util')
import iwd
from iwd import IWD
from iwd import PSKAgent
from iwd import NetworkType
import testutil
from hostapd import HostapdCLI
from hwsim import Hwsim
class Test(unittest.TestCase):
# Test that we do not periodically retry roaming if the transision looks
# like this: LOW [roam] [new bss] HIGH.
def test_stop_retry(self):
hwsim = Hwsim()
bss_hostapd = [ HostapdCLI(config='ssid1.conf'),
HostapdCLI(config='ssid2.conf') ]
bss_radio = [ hwsim.get_radio('rad0'),
hwsim.get_radio('rad1') ]
rule0 = hwsim.rules.create()
rule0.source = bss_radio[0].addresses[0]
rule0.bidirectional = True
rule1 = hwsim.rules.create()
rule1.source = bss_radio[1].addresses[0]
rule1.bidirectional = True
# Fill in the neighbor AP tables in both BSSes. By default each
# instance knows only about current BSS, even inside one hostapd
# process.
# Roaming still works without the neighbor AP table but neighbor
# reports have to be disabled in the .conf files
bss0_nr = ''.join(bss_radio[0].addresses[0].split(':')) + \
'8f0000005101060603000000'
bss1_nr = ''.join(bss_radio[1].addresses[0].split(':')) + \
'8f0000005102060603000000'
bss_hostapd[0].set_neighbor(bss_radio[1].addresses[0], 'TestRoamRetry',
bss1_nr)
bss_hostapd[1].set_neighbor(bss_radio[0].addresses[0], 'TestRoamRetry',
bss0_nr)
# Start in the vicinity of BSS 0, check that iwd connects to BSS 0
rule0.signal = -2000
rule1.signal = -5000
wd = IWD()
psk_agent = PSKAgent("secret123")
wd.register_psk_agent(psk_agent)
devices = wd.list_devices(1)
device = devices[0]
condition = 'not obj.scanning'
wd.wait_for_object_condition(device, condition)
device.scan()
condition = 'not obj.scanning'
wd.wait_for_object_condition(device, condition)
ordered_network = device.get_ordered_network('TestRoamRetry')
self.assertEqual(ordered_network.type, NetworkType.psk)
condition = 'not obj.connected'
wd.wait_for_object_condition(ordered_network.network_object, condition)
ordered_network.network_object.connect()
condition = 'obj.state == DeviceState.connected'
wd.wait_for_object_condition(device, condition)
self.assertTrue(bss_hostapd[0].list_sta())
self.assertFalse(bss_hostapd[1].list_sta())
# Now push the signal below the RSSI threshold and check that iwd
# connects to BSS 1
rule0.signal = -8000
condition = 'obj.state == DeviceState.roaming'
wd.wait_for_object_condition(device, condition)
# Check that iwd is on BSS 1 once out of roaming state and doesn't
# go through 'disconnected', 'autoconnect', 'connecting' in between
from_condition = 'obj.state == DeviceState.roaming'
to_condition = 'obj.state == DeviceState.connected'
wd.wait_for_object_change(device, from_condition, to_condition)
self.assertTrue(bss_hostapd[1].list_sta())
# Now make sure that we don't roam anymore. In order to catch this via
# DeviceState, a suitable roaming target needs to be available. So jack
# up the RSSI of BSS 0 again. The retry interval is 60 seconds, so we
# should have roamed within that timeframe. Wait just a little longer
# to account for the slowness of the autotest environment.
rule0.signal = -2000
condition = 'obj.state == DeviceState.roaming'
self.assertRaises(TimeoutError, wd.wait_for_object_condition, device,
condition, max_wait=70)
device.disconnect()
condition = 'not obj.connected'
wd.wait_for_object_condition(ordered_network.network_object, condition)
wd.unregister_psk_agent(psk_agent)
rule0.remove()
rule1.remove()
@classmethod
def setUpClass(cls):
pass
@classmethod
def tearDownClass(cls):
IWD.clear_storage()
if __name__ == '__main__':
unittest.main(exit=True)