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#!/usr/bin/env python
#
# Copyright 2021 Malte Lenhart
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
from gnuradio import gr, gr_unittest
from gnuradio import blocks
import pmt
import time
# this test tests message strobe and message debug blocks against each other
# similar tests contained in message_strobe class
# this tests only the store port and the message retrival methods of the debug block
# print() and print_pdu() were omitted as they print to stdout
class qa_message_debug(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001_t(self):
test_str = "test_msg"
new_msg = "new_msg"
message_period_ms = 100
msg_strobe = blocks.message_strobe(
pmt.intern(test_str), message_period_ms)
msg_debug = blocks.message_debug()
self.tb.msg_connect(msg_strobe, "strobe", msg_debug, "store")
self.tb.start()
self.assertAlmostEqual(msg_debug.num_messages(),
0, delta=2) # 1st call, expect 0
time.sleep(1) # floor(1000/100) = 10
self.assertAlmostEqual(msg_debug.num_messages(),
10, delta=3) # 2nd call == 1
time.sleep(1) # floor(2000/100) = 15
self.assertAlmostEqual(msg_debug.num_messages(),
20, delta=3) # 3th call == 3
# change test message
msg_strobe.to_basic_block()._post(pmt.intern("set_msg"), pmt.intern(new_msg))
time.sleep(1)
self.tb.stop()
self.tb.wait()
# check data
# first received message matchs initial test message
self.assertAlmostEqual(pmt.to_python(msg_debug.get_message(
0)), test_str, "mismatch initial test string")
# last message matches changed test message
no_msgs = msg_debug.num_messages()
self.assertAlmostEqual(pmt.to_python(msg_debug.get_message(
no_msgs - 1)), new_msg, "failed to update string")
if __name__ == '__main__':
gr_unittest.run(qa_message_debug)
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