Test serialization of ParameterWithPath

src/pymodaq_gui/parameter/utils.py

@@ -7,8 +7,8 @@
 from pymodaq_utils.utils import find_keys_from_val
 from pymodaq_data.serialize.factory import SerializableFactory, SerializableBase
 from pymodaq_gui.parameter import ioxml
-if TYPE_CHECKING:
-    from pymodaq_gui.parameter import Parameter
+
+from pymodaq_gui.parameter import Parameter
 
 ser_factory = SerializableFactory()
 
@@ -50,6 +50,7 @@ def serialize(param: 'ParameterWithPath') -> bytes:
         param_as_xml = ioxml.parameter_to_xml_string(param.parameter)
         bytes_string += ser_factory.get_apply_serializer(path)
         bytes_string += ser_factory.get_apply_serializer(param_as_xml)
+        return bytes_string
 
     @classmethod
     def deserialize(cls, bytes_str: bytes) -> Tuple[Any, bytes]:
@@ -135,8 +136,10 @@ def getValues(param:Parameter,) -> OrderedDict:
     """    
     return param.getValues()
 
-def compareParameters(param1:Parameter,param2:Parameter,opts:list=[])-> bool:  
-    """Compare the structure and the opts of two parameters with their children, return True if structure and all opts are identical
+
+def compareParameters(param1:Parameter, param2:Parameter, opts: list = [])-> bool:
+    """Compare the structure and the opts of two parameters with their children,
+     return True if structure and all opts are identical
         Parameters
         ----------
         param1: Parameter

tests/parameter_test/param_utils_test.py

@@ -136,10 +136,6 @@ def test_compareValuesParameter():
             putils.compareValuesParameter(param1=P1,param2=P3) == False,
             putils.compareValuesParameter(param1=P1,param2=P4) == False]
 
-
-
-
-
 
 class TestScroll:
     def test_scroll_log(self):
@@ -214,3 +210,14 @@ def test_set_param_from_param(qtbot):
     assert settings_old.child('main_settings', 'axis').value() == 2
     assert dict_widget.currentText() == 'DAQ2D'
 
+
+def test_ParameterWithPath_serialize():
+
+    p1_with_path = putils.ParameterWithPath(P1.child('numbers', 'afloat', 'aint'))
+    assert isinstance(putils.ser_factory.get_apply_serializer(p1_with_path), bytes)
+
+    param_back: putils.ParameterWithPath = putils.ser_factory.get_apply_deserializer(
+        putils.ser_factory.get_apply_serializer(p1_with_path))[0]
+    assert param_back.path == p1_with_path.path
+    assert putils.compareParameters(param_back.parameter, p1_with_path.parameter)
+