fix(serialization): add serialization for qpointf

tests/unit_tests/test_serializer.py

@@ -0,0 +1,27 @@
+import pytest
+from bec_lib.serialization import msgpack
+from qtpy.QtCore import QPointF
+
+from bec_widgets.utils import serialization
+
+
+@pytest.mark.parametrize("data, expected", [(QPointF(20, 10), [20, 10])])
+def test_serialize(data, expected):
+    """
+    Test serialization of various data types. Note that the auto-use fixture of
+    the bec-dispatcher already registers the serializer extension, so we don't need to
+    register it again here.
+    """
+
+    serialized_data = msgpack.loads(msgpack.dumps(data))
+    assert serialized_data == expected
+
+
+def test_multiple_extension_registration():
+    """
+    Test that multiple extension registrations do not cause issues.
+    """
+    assert serialization.module_is_registered("bec_widgets.utils.serialization")
+    serialization.register_serializer_extension()
+    assert serialization.module_is_registered("bec_widgets.utils.serialization")
+    assert len(msgpack._encoder) == len(set(msgpack._encoder))