fix: Enable null value for results properties (#99)

Co-authored-by: Priyadarshini Piramanayagam <priydarshini.piramanayagam@emerson.com>

Author: priyadarshini-ni

nisystemlink/clients/testmonitor/models/_create_result_request.py

@@ -35,7 +35,7 @@ class CreateResultRequest(JsonModel):
     keywords: Optional[List[str]]
     """A list of keywords that categorize this result."""
 
-    properties: Optional[Dict[str, str]]
+    properties: Optional[Dict[str, Optional[str]]]
     """A list of custom properties for this result."""
 
     operator: Optional[str]

nisystemlink/clients/testmonitor/models/_result.py

@@ -42,7 +42,7 @@ class Result(JsonModel):
     keywords: Optional[List[str]]
     """A list of keywords that categorize this result."""
 
-    properties: Optional[Dict[str, str]]
+    properties: Optional[Dict[str, Optional[str]]]
     """A list of custom properties for this result."""
 
     operator: Optional[str]

nisystemlink/clients/testmonitor/models/_update_result_request.py

@@ -38,7 +38,7 @@ class UpdateResultRequest(JsonModel):
     keywords: Optional[List[str]]
     """A list of keywords that categorize this result."""
 
-    properties: Optional[Dict[str, str]]
+    properties: Optional[Dict[str, Optional[str]]]
     """A list of custom properties for this result."""
 
     operator: Optional[str]

tests/integration/testmonitor/test_testmonitor.py

@@ -1,5 +1,5 @@
 import uuid
-from typing import List
+from typing import Dict, List, Optional
 
 import pytest
 from nisystemlink.clients.core._http_configuration import HttpConfiguration
@@ -122,7 +122,10 @@ def test__create_single_result_and_get_results__at_least_one_result_exists(
         status = Status.PASSED()
         results = [
             CreateResultRequest(
-                part_number=unique_identifier, program_name=program_name, status=status
+                part_number=unique_identifier,
+                program_name=program_name,
+                status=status,
+                properties={"test": None},
             )
         ]
         create_results(results)
@@ -318,7 +321,7 @@ def test__update_properties_with_replace__properties_replaced(
         original_properties = {"originalKey": "originalValue"}
         program_name = "Test Program"
         status = Status.PASSED()
-        new_properties = {new_key: "newValue"}
+        new_properties: Dict[str, Optional[str]] = {new_key: "newValue"}
         create_response: CreateResultsPartialSuccess = create_results(
             [
                 CreateResultRequest(
@@ -355,7 +358,7 @@ def test__update_properties_append__properties_appended(
         original_properties = {original_key: "originalValue"}
         program_name = "Test Program"
         status = Status.PASSED()
-        new_properties = {new_key: "newValue"}
+        new_properties: Dict[str, Optional[str]] = {new_key: "newValue"}
         create_response: CreateResultsPartialSuccess = create_results(
             [
                 CreateResultRequest(