Migrate OTA example test to pytest framework

examples/system/ota/otatool/pytest_otatool.py

@@ -0,0 +1,30 @@
+# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+from __future__ import print_function
+
+import os
+import subprocess
+import sys
+
+import pytest
+from pytest_embedded import Dut
+
+
+@pytest.mark.supported_targets
+@pytest.mark.wifi
+def test_otatool_example(dut: Dut) -> None:
+    # Verify factory firmware
+    dut.expect('OTA Tool Example')
+    dut.expect('Example end')
+
+    # Close connection to DUT
+    dut.serial.proc.close()
+
+    script_path = os.path.join(str(os.getenv('IDF_PATH')), 'examples', 'system', 'ota', 'otatool', 'otatool_example.py')
+    binary_path = ''
+
+    for flash_file in dut.app.flash_files:
+        if 'otatool.bin' in flash_file[1]:
+            binary_path = flash_file[1]
+            break
+    subprocess.check_call([sys.executable, script_path, '--binary', binary_path])