esp-idf/examples/peripherals/can/can_network/example_test.py

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3.1 KiB
Python

#Need Python 3 string formatting functions
from __future__ import print_function
import re
import os
import sys
import time
from threading import Thread
# The test cause is dependent on the Tiny Test Framework. Ensure the
# `TEST_FW_PATH` environment variable is set to `$IDF_PATH/tools/tiny-test-fw`
test_fw_path = os.getenv("TEST_FW_PATH")
if test_fw_path and test_fw_path not in sys.path:
sys.path.insert(0, test_fw_path)
import TinyFW
import IDF
#Define tuple of strings to expect for each DUT.
master_expect = ("CAN Master: Driver installed", "CAN Master: Driver uninstalled")
slave_expect = ("CAN Slave: Driver installed", "CAN Slave: Driver uninstalled")
listen_only_expect = ("CAN Listen Only: Driver installed", "Listen Only: Driver uninstalled")
def dut_thread_callback(**kwargs):
#Parse keyword arguments
dut = kwargs['dut'] #Get DUT from kwargs
expected = kwargs['expected']
result = kwargs['result'] #Get result[out] from kwargs. MUST be of mutable type e.g. list
#Must reset again as flashing during start_app will reset multiple times, causing unexpected results
dut.reset()
for string in expected:
dut.expect(string, 20)
#Mark thread has run to completion without any exceptions
result[0] = True
@IDF.idf_example_test(env_tag='Example_CAN')
def test_can_network_example(env, extra_data):
#Get device under test. "dut1", "dut2", and "dut3" must be properly defined in EnvConfig
dut_master = env.get_dut("dut1", "examples/peripherals/can/can_network/can_network_master")
dut_slave = env.get_dut("dut2", "examples/peripherals/can/can_network/can_network_slave")
dut_listen_only = env.get_dut("dut3", "examples/peripherals/can/can_network/can_network_listen_only")
#Flash app onto each DUT, each DUT is reset again at the start of each thread
dut_master.start_app()
dut_slave.start_app()
dut_listen_only.start_app()
#Create dict of keyword arguments for each dut
results = [[False], [False], [False]]
master_kwargs = {"dut" : dut_master, "result" : results[0], "expected" : master_expect}
slave_kwargs = {"dut" : dut_slave, "result" : results[1], "expected" : slave_expect}
listen_only_kwargs = {"dut" : dut_listen_only, "result" : results[2], "expected" : listen_only_expect}
#Create thread for each dut
dut_master_thread = Thread(target = dut_thread_callback, name = "Master Thread", kwargs = master_kwargs)
dut_slave_thread = Thread(target = dut_thread_callback, name = "Slave Thread", kwargs = slave_kwargs)
dut_listen_only_thread = Thread(target = dut_thread_callback, name = "Listen Only Thread", kwargs = listen_only_kwargs)
#Start each thread
dut_listen_only_thread.start()
dut_master_thread.start()
dut_slave_thread.start()
#Wait for threads to complete
dut_listen_only_thread.join()
dut_master_thread.join()
dut_slave_thread.join()
#check each thread ran to completion
for result in results:
if result[0] != True:
raise Exception("One or more threads did not run successfully")
if __name__ == '__main__':
test_can_network_example()