add unit tests

Signed-off-by: Jaideep Rao <jrao@redhat.com>

docs/static/experimental-llama-stack-spec.yaml

@@ -7799,18 +7799,9 @@ components:
           - web_search_preview
           - web_search_preview_2025_03_11
           - web_search_2025_08_26
-        search_context_size:
-          anyOf:
-          - type: string
-            pattern: ^low|medium|high$
-          - type: 'null'
-          default: medium
       type: object
       title: OpenAIResponseInputToolChoiceWebSearch
-      description: |-
-        Indicates that the model should use web search to generate a response.
-
-        This is an alias for OpenAIResponseInputToolWebSearch used in tool_choice context.
+      description: Indicates that the model should use web search to generate a response
     OpenAIResponseMessage-Output:
       properties:
         content:
@@ -8148,6 +8139,7 @@ components:
       title: AllowedToolsConfig
       type: object
     CustomToolConfig:
+      description: Custom tool configuration for OpenAI-compatible chat completion requests.
       properties:
         name:
           title: Name