samples/tests: use pytest to verify samples requiring input

samples/arch/mpu/mpu_test/pytest/test_mpu.py

@@ -0,0 +1,27 @@
+# Copyright (c) 2023 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import logging
+import pytest
+import re
+from twister_harness import Shell
+
+logger = logging.getLogger(__name__)
+
+TESTDATA = [
+    ('mpu mtest 1', 'The value is: 0x.*'),
+    ('mpu mtest 2', 'The value is: 0x.*'),
+]
+@pytest.mark.parametrize('command,expected', TESTDATA)
+def test_shell_harness(shell: Shell, command, expected):
+    logger.info('send "help" command')
+    lines = shell.exec_command(command)
+    match = False
+    for line in lines:
+        if re.match(expected, line):
+            match = True
+            break
+
+    assert match, 'expected response not found'
+    logger.info('response is valid')

samples/arch/mpu/mpu_test/sample.yaml

@@ -4,5 +4,6 @@ tests:
   sample.mpu.mpu_test:
     arch_allow: arm
     filter: CONFIG_CPU_HAS_MPU and not CONFIG_ARM64
-    tags: mpu
-    harness: keyboard
+    tags:
+      - mpu
+    harness: pytest

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

samples/subsys/console/getline/pytest/test_keyboard.py

@@ -0,0 +1,24 @@
+# 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 is great', 'line: Zephyr is great'),
+    ('This is a test', 'line: This is a test'),
+]
+@pytest.mark.parametrize('command,expected', TESTDATA)
+def test_getline(dut: DeviceAdapter, command, expected):
+    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=10.0, print_output=True))
+    assert expected in lines, 'expected response not found'

samples/subsys/console/getline/sample.yaml

@@ -6,4 +6,4 @@ tests:
       - mps2/an385
     filter: CONFIG_UART_CONSOLE and CONFIG_SERIAL_SUPPORT_INTERRUPT
     tags: console
-    harness: keyboard
+    harness: pytest

tests/drivers/uart/uart_basic_api/testcase.yaml

@@ -1,58 +1,37 @@
+common:
+  harness: keyboard
+  filter: CONFIG_UART_CONSOLE
+  tags:
+    - drivers
+    - uart
 tests:
   drivers.uart.basic_api:
-    tags:
-      - drivers
-      - uart
-    filter: CONFIG_UART_CONSOLE
-    harness: keyboard
     integration_platforms:
       - mps2/an385
   drivers.uart.basic_api.wide:
     extra_configs:
       - CONFIG_UART_WIDE_DATA=y
     tags: drivers uart
-    filter: CONFIG_UART_CONSOLE
-    harness: keyboard
     arch_allow: arm
     platform_allow: nucleo_h743zi
     integration_platforms:
       - nucleo_h743zi
     extra_args: DTC_OVERLAY_FILE="boards/nucleo_h743zi.overlay"
   drivers.uart.basic_api.poll:
     extra_args: CONF_FILE=prj_poll.conf
-    tags:
-      - drivers
-      - uart
-    filter: CONFIG_UART_CONSOLE
-    harness: keyboard
     integration_platforms:
       - mps2/an385
   drivers.uart.basic_api.shell:
     extra_args: CONF_FILE=prj_shell.conf
     min_flash: 64
-    tags:
-      - drivers
-      - uart
-    filter: CONFIG_UART_CONSOLE
-    harness: keyboard
     integration_platforms:
       - mps2/an385
   drivers.uart.basic_api.cdc_acm:
     extra_args:
       - EXTRA_CONF_FILE="overlay-usb.conf"
       - DTC_OVERLAY_FILE="usb.overlay"
-    tags:
-      - drivers
-      - usb
-    filter: CONFIG_UART_CONSOLE
     depends_on: usb_device
-    harness: keyboard
   drivers.uart.basic_api.shell_ke17z9_uart:
-    tags:
-      - drivers
-      - uart
-    filter: CONFIG_UART_CONSOLE
-    harness: keyboard
     platform_allow: frdm_ke17z512
     extra_args:
       - CONF_FILE=prj_shell.conf