feat(esp_modem): Added target test

components/esp_modem/examples/pppos_client/pytest_pppos_client.py

@@ -0,0 +1,24 @@
+# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+from __future__ import print_function, unicode_literals
+
+
+def test_pppos_connect(dut):
+    """
+    steps:
+      1. initializes connection with SIM800
+      2. checks we get an IP
+      3. checks for the MQTT events
+      4. checks that the client cleanly disconnects
+    """
+    # Check the sequence of connecting, publishing, disconnecting
+    dut.expect('Modem Connect to PPP Server')
+    # Check for MQTT connection and the data event
+    dut.expect('MQTT_EVENT_CONNECTED')
+    dut.expect('MQTT_EVENT_DATA')
+    dut.expect('TOPIC=/topic/esp-pppos')
+    dut.expect('DATA=esp32-pppos')
+    # Check that we have disconnected
+    dut.expect('User interrupted event')
+    # And can use commands again
+    dut.expect('IMSI=[0-9]+')