Allow parameter decorator to passthrough None for type

brewtils/decorators.py

@@ -297,19 +297,20 @@ def echo(self, message):
     """
 
     # Validate type against permitted string literals
-    if not isinstance(type, str):
-        # Try to map literal to string equivalent
-        temp_type = _format_type(type)
-        if temp_type in Parameter.TYPES:
-            type = temp_type
-    elif type not in Parameter.TYPES:
-        # Allowing type matching: string == String == STRING
-        for parameter_type in Parameter.TYPES:
-            if type.upper() == parameter_type.upper():
-                type = parameter_type
-                break
-    if type not in Parameter.TYPES:
-        raise ValueError(f"Unable to map type {type} to string literal")
+    if type:
+        if not isinstance(type, str):
+            # Try to map literal to string equivalent
+            temp_type = _format_type(type)
+            if temp_type in Parameter.TYPES:
+                type = temp_type
+        elif type not in Parameter.TYPES:
+            # Allowing type matching: string == String == STRING
+            for parameter_type in Parameter.TYPES:
+                if type.upper() == parameter_type.upper():
+                    type = parameter_type
+                    break
+        if type not in Parameter.TYPES:
+            raise ValueError(f"Unable to map type {type} to string literal")
 
     if _wrapped is None:
         return functools.partial(

test/decorators_test.py

@@ -731,7 +731,7 @@ def cmd6(foo):
         assert cmd3.parameters[0].type == "Float"
         assert cmd4.parameters[0].type == "Boolean"
         assert cmd5.parameters[0].type == "Dictionary"
-        assert cmd6.parameters[0].type == "Any"
+        assert cmd6.parameters[0].type == None
 
         with pytest.raises(ValueError):