OVMS3-idf/examples/protocols/mqtt/tcp/mqtt_tcp_example_test.py

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import re
import os
import sys
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import socket
from threading import Thread
import struct
import time
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try:
import IDF
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from IDF.IDFDUT import ESP32DUT
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except ImportError:
# this is a test case write with tiny-test-fw.
# to run test cases outside tiny-test-fw,
# we need to set environment variable `TEST_FW_PATH`,
# then get and insert `TEST_FW_PATH` to sys path before import FW module
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 IDF
import DUT
msgid = -1
def get_my_ip():
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s1 = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s1.connect(("8.8.8.8", 80))
my_ip = s1.getsockname()[0]
s1.close()
return my_ip
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def mqqt_server_sketch(my_ip, port):
global msgid
print("Starting the server on {}".format(my_ip))
s = None
try:
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(60)
s.bind((my_ip, port))
s.listen(1)
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q,addr = s.accept()
q.settimeout(30)
print("connection accepted")
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except Exception:
print("Local server on {}:{} listening/accepting failure: {}"
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"Possibly check permissions or firewall settings"
"to accept connections on this address".format(my_ip, port, sys.exc_info()[0]))
raise
data = q.recv(1024)
# check if received initial empty message
print("received from client {}".format(data))
data = bytearray([0x20, 0x02, 0x00, 0x00])
q.send(data)
# try to receive qos1
data = q.recv(1024)
msgid = struct.unpack(">H", data[15:17])[0]
print("received from client {}, msgid: {}".format(data, msgid))
data = bytearray([0x40, 0x02, data[15], data[16]])
q.send(data)
time.sleep(5)
s.close()
print("server closed")
@IDF.idf_example_test(env_tag="Example_WIFI")
def test_examples_protocol_mqtt_qos1(env, extra_data):
global msgid
"""
steps: (QoS1: Happy flow)
1. start the broker broker (with correctly sending ACK)
2. DUT client connects to a broker and publishes qos1 message
3. Test evaluates that qos1 message is queued and removed from queued after ACK received
4. Test the broker received the same message id evaluated in step 3
"""
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dut1 = env.get_dut("mqtt_tcp", "examples/protocols/mqtt/tcp", dut_class=ESP32DUT)
# check and log bin size
binary_file = os.path.join(dut1.app.binary_path, "mqtt_tcp.bin")
bin_size = os.path.getsize(binary_file)
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IDF.log_performance("mqtt_tcp_bin_size", "{}KB".format(bin_size // 1024))
IDF.check_performance("mqtt_tcp_size", bin_size // 1024)
# 1. start mqtt broker sketch
host_ip = get_my_ip()
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thread1 = Thread(target=mqqt_server_sketch, args=(host_ip,1883))
thread1.start()
# 2. start the dut test and wait till client gets IP address
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dut1.start_app()
# waiting for getting the IP address
try:
ip_address = dut1.expect(re.compile(r" sta ip: ([^,]+),"), timeout=30)
print("Connected to AP with IP: {}".format(ip_address))
except DUT.ExpectTimeout:
raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
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print("writing to device: {}".format("mqtt://" + host_ip + "\n"))
dut1.write("mqtt://" + host_ip + "\n")
thread1.join()
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print("Message id received from server: {}".format(msgid))
# 3. check the message id was enqueued and then deleted
msgid_enqueued = dut1.expect(re.compile(r"OUTBOX: ENQUEUE msgid=([0-9]+)"), timeout=30)
msgid_deleted = dut1.expect(re.compile(r"OUTBOX: DELETED msgid=([0-9]+)"), timeout=30)
# 4. check the msgid of received data are the same as that of enqueued and deleted from outbox
if (msgid_enqueued[0] == str(msgid) and msgid_deleted[0] == str(msgid)):
print("PASS: Received correct msg id")
else:
print("Failure!")
raise ValueError('Mismatch of msgid: received: {}, enqueued {}, deleted {}'.format(msgid, msgid_enqueued, msgid_deleted))
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if __name__ == '__main__':
test_examples_protocol_mqtt_qos1()