feat(examples/ethernet/basic): add pytest script to basic ethernet example

examples/ethernet/basic/pytest_eth_basic.py

@@ -0,0 +1,24 @@
+# SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+import platform
+import subprocess
+
+import pytest
+from pytest_embedded import Dut
+
+
+@pytest.mark.esp32
+@pytest.mark.parametrize('config', [
+    pytest.param('default_ip101', marks=[pytest.mark.ethernet_router]),
+    pytest.param('default_dm9051', marks=[pytest.mark.eth_dm9051]),
+], indirect=True)
+def test_esp_eth_basic_dm9051(
+    dut: Dut
+) -> None:
+    # wait for ip received
+    dut_ip = dut.expect(r'esp_netif_handlers: .+ ip: (\d+\.\d+\.\d+\.\d+),').group(1)
+    # ping it once
+    param = '-n' if platform.system().lower() == 'windows' else '-c'
+    command = ['ping', param, '1', dut_ip]
+    output = subprocess.run(command, capture_output=True)
+    assert 'unreachable' not in str(output.stdout)