ollama integration: Don't drop all falsey values (#159735)

homeassistant/components/ollama/entity.py

@@ -75,7 +75,11 @@ def _parse_tool_args(arguments: dict[str, Any]) -> dict[str, Any]:
     small local tool use models. This will repair invalid json arguments and
     omit unnecessary arguments with empty values that will fail intent parsing.
     """
-    return {k: _fix_invalid_arguments(v) for k, v in arguments.items() if v}
+    return {
+        k: _fix_invalid_arguments(v)
+        for k, v in arguments.items()
+        if v is not None and v != ""
+    }
 
 
 def _convert_content(

tests/components/ollama/test_conversation.py

@@ -277,6 +277,14 @@ async def test_template_variables(
             {"domain": "['light']"},
             {"domain": "['light']"},  # Preserve invalid json that can't be parsed
         ),
+        (
+            {"position": 0},
+            {"position": 0},  # Preserve 0 as a valid value
+        ),
+        (
+            {"enabled": False},
+            {"enabled": False},  # Preserve False as a valid value
+        ),
     ],
 )
 @patch("homeassistant.components.ollama.entity.llm.AssistAPI._async_get_tools")