feat(mdns): Add linux console functional tests

components/mdns/tests/host_test/pytest_mdns.py

@@ -0,0 +1,72 @@
+# SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+import logging
+
+import pexpect
+import pytest
+from dnsfixture import DnsPythonWrapper
+
+# Configure logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+ipv6_enabled = False
+
+
+class MdnsConsole:
+    def __init__(self, command):
+        self.process = pexpect.spawn(command, encoding='utf-8')
+        self.process.logfile = open('mdns_interaction.log', 'w')  # Log all interactions
+        self.process.expect('mdns> ', timeout=10)
+
+    def send_input(self, input_data):
+        logger.info(f'Sending to stdin: {input_data}')
+        self.process.sendline(input_data)
+
+    def get_output(self, expected_data):
+        logger.info(f'Expecting: {expected_data}')
+        self.process.expect(expected_data, timeout=10)
+        output = self.process.before.strip()
+        logger.info(f'Received from stdout: {output}')
+        return output
+
+    def terminate(self):
+        self.send_input('exit')
+        self.get_output('Exit')
+        self.process.wait()
+        self.process.close()
+        assert self.process.exitstatus == 0
+
+
+@pytest.fixture(scope='module')
+def mdns_console():
+    app = MdnsConsole('./build_linux_console/mdns_host.elf')
+    yield app
+    app.terminate()
+
+
+@pytest.fixture(scope='module')
+def dig_app():
+    return DnsPythonWrapper()
+
+
+def test_mdns_init(mdns_console, dig_app):
+    mdns_console.send_input('mdns_init -h hostname')
+    mdns_console.get_output('MDNS: Hostname: hostname')
+    dig_app.check_record('hostname.local', query_type='A', expected=True)
+    if ipv6_enabled:
+        dig_app.check_record('hostname.local', query_type='AAAA', expected=True)
+
+
+def test_add_service(mdns_console, dig_app):
+    mdns_console.send_input('mdns_service_add _http _tcp 80 -i test_service')
+    mdns_console.get_output('MDNS: Service Instance: test_service')
+    dig_app.check_record('_http._tcp.local', query_type='PTR', expected=True)
+
+
+def test_remove_service(mdns_console, dig_app):
+    mdns_console.send_input('mdns_service_remove _http _tcp')
+    dig_app.check_record('_http._tcp.local', query_type='PTR', expected=False)
+
+
+if __name__ == '__main__':
+    pytest.main(['-s', 'test_mdns.py'])