Merge pull request #392 from Limmen/multiprocessing

multiprocessing_util unit test

simulation-system/libs/csle-common/tests/test_multiprocessing_util.py

@@ -0,0 +1,43 @@
+from unittest.mock import patch
+from csle_common.util.multiprocessing_util import NoDaemonProcess
+from csle_common.util.multiprocessing_util import NoDaemonContext
+from csle_common.util.multiprocessing_util import NestablePool
+
+
+class TestMultiprocessingUtilSuite:
+    """
+    Test suite for multiprocessing util
+    """
+
+    def test_daemon(self) -> None:
+        """
+        Test the process with daemon property set to false
+
+        :return: None
+        """
+        result = NoDaemonProcess(target=lambda: None).daemon
+        assert not result
+
+    def test_no_daemon_context(self) -> None:
+        """
+        Test the NoDaemonContext method
+
+        :return: None
+        """
+        context = NoDaemonContext()
+        process = context.Process(target=lambda: None)
+        assert isinstance(process, NoDaemonProcess)
+        assert not process.daemon
+
+    @patch("multiprocessing.get_context")
+    def test_nestable_pool_initialization(self, mock_get_context) -> None:
+        """
+        Test the method that initializes the pool
+
+        :param mock_get_context: mock_get_context
+
+        :return: None
+        """
+        mock_get_context.return_value = NoDaemonContext()
+        pool = NestablePool()
+        assert pool