Merge pull request #4355 from aws-lumberyard-dev/linux_integ_test

Linux integ test for test tools

Tools/LyTestTools/tests/CMakeLists.txt

@@ -39,6 +39,14 @@ if(PAL_TRAIT_BUILD_HOST_TOOLS AND PAL_TRAIT_BUILD_TESTS_SUPPORTED AND AutomatedT
         TEST_SUITE smoke
         COMPONENT TestTools
     )
+    
+    ly_add_pytest(
+        NAME LyTestTools_IntegTests_ProcessUtilsLinux_smoke_no_gpu
+        PATH ${CMAKE_CURRENT_LIST_DIR}/integ/test_process_utils_linux.py
+        TEST_SERIAL
+        TEST_SUITE smoke
+        COMPONENT TestTools
+    )
 
     # Regression tests.
     ly_add_pytest(

Tools/LyTestTools/tests/integ/test_process_utils_linux.py

@@ -0,0 +1,39 @@
+"""
+Copyright (c) Contributors to the Open 3D Engine Project.
+For complete copyright and license terms please see the LICENSE at the root of this distribution.
+
+SPDX-License-Identifier: Apache-2.0 OR MIT
+"""
+import subprocess
+import pytest
+
+import ly_test_tools.environment.process_utils as process_utils
+import ly_test_tools.environment.waiter as waiter
+from ly_test_tools import LINUX
+
+if LINUX:
+    pytestmark = pytest.mark.SUITE_smoke
+else:
+    pytestmark = pytest.mark.skipif(not LINUX, reason="Only runs on Linux")
+
+
+class TestProcessUtils(object):
+
+    def test_KillLinuxProcess_ProcessStarted_KilledSuccessfully(self):
+        # Construct a simple timeout command
+        linux_executable = 'timeout'
+        command = [linux_executable, '5s', 'echo']
+
+        # Verification function for the waiter to call
+        def process_killed():
+            return not process_utils.process_exists(linux_executable, ignore_extensions=True)
+
+        # Create a new process with no output in a new session
+        with subprocess.Popen(command, stdout=subprocess.DEVNULL, start_new_session=True):
+            # Ensure that the process was started
+            assert process_utils.process_exists(linux_executable, ignore_extensions=True), \
+                f"Process '{linux_executable}' was expected to exist, but could not be found."
+            # Kill the process using the process_utils module
+            process_utils.kill_processes_named(linux_executable, ignore_extensions=True)
+            # Verify that the process was killed
+            waiter.wait_for(process_killed, timeout=2)  # Raises exception if the process is alive.