feat(connector): added threadpool wrapper

tests/unit_tests/test_bec_connector.py

@@ -1,5 +1,9 @@
 # pylint: disable = no-name-in-module,missing-class-docstring, missing-module-docstring
+import time
+
 import pytest
+from qtpy.QtCore import Slot
+from qtpy.QtWidgets import QApplication
 
 from bec_widgets.utils import BECConnector, ConnectionConfig
 
@@ -55,3 +59,22 @@ def test_bec_connector_update_client(bec_connector, mocked_client):
 def test_bec_connector_get_config(bec_connector):
     assert bec_connector.get_config(dict_output=False) == bec_connector.config
     assert bec_connector.get_config() == bec_connector.config.model_dump()
+
+
+def test_bec_connector_submit_task(bec_connector):
+    def test_func():
+        time.sleep(2)
+        print("done")
+
+    completed = False
+
+    @Slot()
+    def complete_func():
+        nonlocal completed
+        completed = True
+
+    bec_connector.submit_task(test_func, on_complete=complete_func)
+    assert not completed
+    while not completed:
+        QApplication.processEvents()
+        time.sleep(0.1)