samples: echo_bot: use pytest to run test

Use pytest to verify sample.

Signed-off-by: Anas Nashif <[email protected]>

Author: nashif

samples/drivers/uart/echo_bot/pytest/test_keyboard.py

@@ -0,0 +1,25 @@
+# Copyright (c) 2023 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import logging
+import pytest
+from twister_harness import DeviceAdapter
+import re
+
+logger = logging.getLogger(__name__)
+
+TESTDATA = [
+    ('zephyr', 'Echo: zephyr'),
+    ('console', 'Echo: console'),
+]
+@pytest.mark.parametrize('command,expected', TESTDATA)
+def test_echo_bot(dut: DeviceAdapter, command, expected):
+    timeout = 10.0
+    command_ext = f'{command}\n\n'
+    regex_expected = f'.*{re.escape(expected)}'
+    dut.clear_buffer()
+    dut.write(command_ext.encode())
+    lines: list[str] = []
+    lines.extend(dut.readlines_until(regex=regex_expected, timeout=timeout, print_output=True))
+    assert expected in lines, 'expected response not found'

samples/drivers/uart/echo_bot/sample.yaml

@@ -10,4 +10,4 @@ tests:
     filter: CONFIG_SERIAL and
             CONFIG_UART_INTERRUPT_DRIVEN and
             dt_chosen_enabled("zephyr,shell-uart")
-    harness: keyboard
+    harness: pytest