feat(mosq): Add target tests with localhost broker-client

components/mosquitto/examples/broker/pytest_mosq_local.py

@@ -0,0 +1,18 @@
+# SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+
+def test_mosq_local(dut):
+    """
+    steps:
+      1. Start mosquitto broker
+      2. Start mqtt client
+      3. Checks that the client connected to broker
+      4. checks that the client received published data
+    """
+    # We expect the client to connect from IPv4 localhost address
+    dut.expect('New client connected from 127.0.0.1')
+    # We expect the client to get "connected" event and receive the published data
+    dut.expect('MQTT_EVENT_CONNECTED')
+    dut.expect('MQTT_EVENT_DATA')
+    dut.expect('TOPIC=/topic/qos0')
+    dut.expect('DATA=data')