Fix error test cases to match actual exception types

Co-authored-by: greglucas <12417828+greglucas@users.noreply.github.com>

Author: Copilot

tests/unit/test_xtce/test_comparisons.py

@@ -394,15 +394,15 @@ def test_condition_validity_check(args, kwargs, expected_error, expected_error_m
             ),
             True,
         ),
-        # Error case: invalid comparison value
+        # Error case: invalid XML structure (missing ComparisonOperator)
         (
             f"""
 <xtce:BooleanExpression xmlns:xtce="{XTCE_1_2_XMLNS}">
     <xtce:Condition parameterRef="P" value="invalid" />
 </xtce:BooleanExpression>
 """,
             SpacePacket(**{"P": common.IntParameter(100, 4)}),
-            ValueError("invalid literal for int()"),
+            AttributeError("'NoneType' object has no attribute 'text'"),
         ),
     ],
 )

tests/unit/test_xtce/test_parameter_types.py

@@ -463,7 +463,7 @@ def test_float_parameter_type(elmaker, xtce_parser, xml_string: str, expectation
     </xtce:EnumerationList>
 </xtce:EnumeratedParameterType>
 """,
-            ValueError("Parameter Type name attribute is required"),
+            KeyError("name"),
         ),
     ],
 )
@@ -810,7 +810,7 @@ def test_boolean_parameter_type(elmaker, xtce_parser, xml_string, expectation):
     </xtce:Encoding>
 </xtce:AbsoluteTimeParameterType>
 """,
-            ValueError("Parameter Type name attribute is required"),
+            KeyError("name"),
         ),
     ],
 )