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iwd/autotests/testRSSIAgent/connection_test.py
James Prestwood d232edde72 auto-t: replace waiting for network with device
Many tests waited on the network object 'connected' property after
issuing a Connect command. This is not correct as 'connected' is
set quite early in the connection process. The correct way of doing
this is waiting for the device state to change to connected.

This common code was replaced, hopefully putting to rest any random
failures that happen occasionally.
2020-09-14 16:03:04 -05:00

110 lines
3.5 KiB
Python

#! /usr/bin/python3
import unittest
import sys
import time
sys.path.append('../util')
import iwd
from iwd import IWD
from iwd import NetworkType
from hwsim import Hwsim
class TstAgent(iwd.SignalAgent):
def handle_new_level(self, path, level):
self.device_path = path
self.level = level
self.calls += 1
class Test(unittest.TestCase):
def test_rssi_agent(self):
rule = Hwsim().rules.create()
rule.signal = -4000
wd = IWD()
device = wd.list_devices(1)[0]
# Register agent early to catch any unexpected notifications
agent = TstAgent()
agent.calls = 0
device.register_signal_agent(agent, [-20, -40, -60, -80])
condition = 'not obj.scanning'
wd.wait_for_object_condition(device, condition)
device.scan()
condition = 'obj.scanning'
wd.wait_for_object_condition(device, condition)
condition = 'not obj.scanning'
wd.wait_for_object_condition(device, condition)
ordered_network = device.get_ordered_network('TestOpen')
self.assertEqual(ordered_network.type, NetworkType.open)
self.assertEqual(ordered_network.signal_strength, -4000)
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)
# Test with 5 signal strength levels first, then with 3
def test_list(rssi_pairs):
# Roughly test big jumps in RSSI value that cross from one
# level range to another, then with small changes that shouldn't
# cause any notification.
# Allow 3 secs for the agent to receive the final signal
# strength level number and allow more than one notification
# until it reaches the target value because the kernel (mac80211
# at least) uses a moving-window average value over the last RSSI
# measurements received from the driver and it changes gradually.
# Normally 1 second is enough.
self.assertEqual(agent.calls, 0)
for centre, level in rssi_pairs:
rule.signal = centre
agent.level = -1
condition = 'obj.level == ' + str(level)
wd.wait_for_object_condition(agent, condition)
self.assertTrue(agent.calls > 0)
self.assertEqual(agent.device_path, device.device_path)
agent.calls = 0
for offset in [-900, 500, -100, 900]:
rule.signal = centre - offset
wd.wait(0.5)
self.assertEqual(agent.calls, 0)
test_list([(-7000, 3), (-1000, 0), (-3000, 1), (-5000, 2),
(-7000, 3), (-1000, 0), (-5000, 2)])
device.unregister_signal_agent(agent)
device.register_signal_agent(agent, [-35, -65])
test_list([(-1500, 0), (-5000, 1), (-7500, 2), (-1500, 0)])
device.disconnect()
condition = 'not obj.connected'
wd.wait_for_object_condition(ordered_network.network_object, condition)
self.assertEqual(agent.calls, 0)
device.unregister_signal_agent(agent)
@classmethod
def setUpClass(cls):
pass
@classmethod
def tearDownClass(cls):
IWD.clear_storage()
if __name__ == '__main__':
unittest.main(exit=True)