[Test] add request-body mock test for bedrock gpt-oss tool schema

Complements the stubbed-out live integration test by verifying the
outgoing Bedrock Converse request body for GPT-OSS is well-formed when
the caller supplies a tool schema with OpenAI-style metadata
($id, $schema, additionalProperties, strict):
- correct converse URL for bedrock/converse/openai.gpt-oss-20b-1:0
- toolConfig.tools[0].toolSpec has the expected name/description
- inputSchema.json keeps type/properties/required and strips fields
  Bedrock does not accept

tests/llm_translation/test_bedrock_gpt_oss.py

@@ -1,14 +1,16 @@
 from base_llm_unit_tests import BaseLLMChatTest
+import json
 import pytest
 import sys
 import os
-from unittest.mock import patch, MagicMock
+from unittest.mock import patch, Mock, MagicMock
 
 sys.path.insert(
     0, os.path.abspath("../..")
 )  # Adds the parent directory to the system path
 import litellm
 from litellm.llms.bedrock.chat.converse_transformation import AmazonConverseConfig
+from litellm.llms.custom_httpx.http_handler import HTTPHandler
 
 
 class TestBedrockGPTOSS(BaseLLMChatTest):
@@ -22,9 +24,98 @@ class TestBedrockGPTOSS(BaseLLMChatTest):
         pass
 
     def test_function_calling_with_tool_response(self):
-        """Bedrock GPT-OSS intermittently emits truncated toolUse.input deltas; the underlying code path is already covered by the Claude, Nova, and Llama Converse suites in test_bedrock_completion.py / test_bedrock_llama.py."""
+        """Bedrock GPT-OSS intermittently emits truncated toolUse.input deltas on
+        the live endpoint, which makes the inherited live integration test flaky.
+        The accumulation side is covered deterministically by
+        tests/test_litellm/llms/bedrock/chat/test_invoke_handler.py::test_transform_tool_calls_index;
+        the GPT-OSS-specific request-body transformation is covered by
+        test_function_calling_request_body_gpt_oss below.
+        """
         pass
 
+    def test_function_calling_request_body_gpt_oss(self):
+        """Verify the Bedrock Converse request body is well-formed for GPT-OSS when the
+        caller supplies a tool schema with OpenAI-style metadata ($id, $schema,
+        additionalProperties, strict). Bedrock only accepts a trimmed JSON Schema in
+        toolSpec.inputSchema.json, so the extra fields must be stripped and the
+        required shape preserved.
+        """
+        client = HTTPHandler()
+
+        tools = [
+            {
+                "type": "function",
+                "function": {
+                    "name": "get_weather",
+                    "description": "Get the weather in a city",
+                    "parameters": {
+                        "$id": "https://some/internal/name",
+                        "$schema": "https://json-schema.org/draft-07/schema",
+                        "type": "object",
+                        "properties": {
+                            "city": {
+                                "type": "string",
+                                "description": "The city to get the weather for",
+                            }
+                        },
+                        "required": ["city"],
+                        "additionalProperties": False,
+                    },
+                    "strict": True,
+                },
+            }
+        ]
+
+        with patch.object(client, "post", new=Mock()) as mock_post:
+            try:
+                litellm.completion(
+                    model="bedrock/converse/openai.gpt-oss-20b-1:0",
+                    messages=[
+                        {"role": "user", "content": "How is the weather in Mumbai?"}
+                    ],
+                    tools=tools,
+                    aws_region_name="us-west-2",
+                    client=client,
+                )
+            except Exception:
+                # We only care about the outgoing request; the mocked post returns
+                # a Mock that can't be parsed as a real Converse response.
+                pass
+
+        mock_post.assert_called_once()
+        call_kwargs = mock_post.call_args.kwargs
+
+        assert call_kwargs["url"].endswith(
+            "/model/openai.gpt-oss-20b-1%3A0/converse"
+        ), call_kwargs["url"]
+
+        request_body = json.loads(call_kwargs["data"])
+
+        assert "toolConfig" in request_body
+        tool_specs = request_body["toolConfig"]["tools"]
+        assert len(tool_specs) == 1
+        tool_spec = tool_specs[0]["toolSpec"]
+        assert tool_spec["name"] == "get_weather"
+        assert tool_spec["description"] == "Get the weather in a city"
+
+        input_schema = tool_spec["inputSchema"]["json"]
+        assert input_schema["type"] == "object"
+        assert input_schema["required"] == ["city"]
+        assert input_schema["properties"]["city"]["type"] == "string"
+
+        # Bedrock's toolSpec.inputSchema.json only accepts type/properties/required;
+        # the OpenAI-style metadata must not leak through.
+        for stripped_field in ("$id", "$schema", "additionalProperties", "strict"):
+            assert (
+                stripped_field not in input_schema
+            ), f"{stripped_field} should be stripped before hitting Bedrock"
+
+        assert request_body["messages"][0]["role"] == "user"
+        assert (
+            request_body["messages"][0]["content"][0]["text"]
+            == "How is the weather in Mumbai?"
+        )
+
     def test_prompt_caching(self):
         """
         Remove override once we have access to Bedrock prompt caching