diff --git a/pyproject.toml b/pyproject.toml
index fc50b24199..b331b821a6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -123,7 +123,7 @@ test = [
   "kubernetes>=29.0.0",                           # For GkeCodeExecutor
   "langchain-community>=0.3.17",
   "langgraph>=0.2.60, <0.4.8",                    # For LangGraphAgent
-  "litellm>=1.75.5, <1.81.0",                     # For LiteLLM tests
+  "litellm>=1.75.5, <1.80.17",                    # For LiteLLM tests
   "llama-index-readers-file>=0.4.0",              # For retrieval tests
   "openai>=1.100.2",                              # For LiteLLM
   "pytest-asyncio>=0.25.0",
@@ -153,7 +153,7 @@ extensions = [
   "docker>=7.0.0",                              # For ContainerCodeExecutor
   "kubernetes>=29.0.0",                         # For GkeCodeExecutor
   "langgraph>=0.2.60, <0.4.8",                  # For LangGraphAgent
-  "litellm>=1.75.5, <1.81.0",                   # For LiteLlm class. Currently has OpenAI limitations. TODO: once LiteLlm fix it
+  "litellm>=1.75.5, <1.80.17",                  # For LiteLlm class. Currently has OpenAI limitations. TODO: once LiteLlm fix it
   "llama-index-readers-file>=0.4.0",            # For retrieval using LlamaIndex.
   "llama-index-embeddings-google-genai>=0.3.0", # For files retrieval using LlamaIndex.
   "lxml>=5.3.0",                                # For load_web_page tool.
diff --git a/src/google/adk/agents/remote_a2a_agent.py b/src/google/adk/agents/remote_a2a_agent.py
index 7c894d54a3..2da7a4faa0 100644
--- a/src/google/adk/agents/remote_a2a_agent.py
+++ b/src/google/adk/agents/remote_a2a_agent.py
@@ -134,7 +134,7 @@ def __init__(
     Args:
       name: Agent name (must be unique identifier)
       agent_card: AgentCard object, URL string, or file path string
-      description: Agent description (auto-populated from card if empty)
+      description: Agent description (autopopulated from card if empty)
       httpx_client: Optional shared HTTP client (will create own if not
         provided) [deprecated] Use a2a_client_factory instead.
       timeout: HTTP timeout in seconds
diff --git a/src/google/adk/cli/adk_web_server.py b/src/google/adk/cli/adk_web_server.py
index 4404d62e4e..b97932d042 100644
--- a/src/google/adk/cli/adk_web_server.py
+++ b/src/google/adk/cli/adk_web_server.py
@@ -395,7 +395,7 @@ def _setup_gcp_telemetry(
           # TODO - use trace_to_cloud here as well once otel_to_cloud is no
           # longer experimental.
           enable_cloud_tracing=True,
-          # TODO - reenable metrics once errors during shutdown are fixed.
+          # TODO - re-enable metrics once errors during shutdown are fixed.
           enable_cloud_metrics=False,
           enable_cloud_logging=True,
           google_auth=(credentials, project_id),
diff --git a/src/google/adk/cli/cli_tools_click.py b/src/google/adk/cli/cli_tools_click.py
index 6058a063db..c4f1d405ad 100644
--- a/src/google/adk/cli/cli_tools_click.py
+++ b/src/google/adk/cli/cli_tools_click.py
@@ -1299,7 +1299,7 @@ def cli_web(
 ):
   """Starts a FastAPI server with Web UI for agents.
 
-  AGENTS_DIR: The directory of agents, where each sub-directory is a single
+  AGENTS_DIR: The directory of agents, where each subdirectory is a single
   agent, containing at least `__init__.py` and `agent.py` files.
 
   Example:
@@ -1366,7 +1366,7 @@ async def _lifespan(app: FastAPI):
 
 @main.command("api_server")
 @feature_options()
-# The directory of agents, where each sub-directory is a single agent.
+# The directory of agents, where each subdirectory is a single agent.
 # By default, it is the current working directory
 @click.argument(
     "agents_dir",
@@ -1401,7 +1401,7 @@ def cli_api_server(
 ):
   """Starts a FastAPI server for agents.
 
-  AGENTS_DIR: The directory of agents, where each sub-directory is a single
+  AGENTS_DIR: The directory of agents, where each subdirectory is a single
   agent, containing at least `__init__.py` and `agent.py` files.
 
   Example:
diff --git a/src/google/adk/evaluation/eval_config.py b/src/google/adk/evaluation/eval_config.py
index 185f02cc20..ead2303ceb 100644
--- a/src/google/adk/evaluation/eval_config.py
+++ b/src/google/adk/evaluation/eval_config.py
@@ -89,7 +89,7 @@ class EvalConfig(BaseModel):
 In the sample below, `tool_trajectory_avg_score`, `response_match_score` and
 `final_response_match_v2` are the standard eval metric names, represented as
 keys in the dictionary. The values in the dictionary are the corresponding
-criterions. For the first two metrics, we use simple threshold as the criterion,
+criteria. For the first two metrics, we use simple threshold as the criterion,
 the third one uses `LlmAsAJudgeCriterion`.
 {
   "criteria": {
diff --git a/src/google/adk/evaluation/rubric_based_evaluator.py b/src/google/adk/evaluation/rubric_based_evaluator.py
index 63c1d47d00..451a14f1a5 100644
--- a/src/google/adk/evaluation/rubric_based_evaluator.py
+++ b/src/google/adk/evaluation/rubric_based_evaluator.py
@@ -93,7 +93,7 @@ class PerInvocationResultsAggregator(abc.ABC):
   """An interface for aggregating per invocation samples.
 
   AutoRaters that are backed by an LLM are known to have certain degree of
-  unreliabilty to their responses. In order to counter that we sample the
+  unreliability to their responses. In order to counter that we sample the
   autorater more than once for a single invocation.
 
   The aggregator helps convert those multiple samples into a single result.
@@ -419,7 +419,7 @@ def aggregate_per_invocation_samples(
     """Returns a combined result by aggregating multiple samples for the same invocation.
 
     AutoRaters that are backed by an LLM are known to have certain degree of
-    unreliabilty to their responses. In order to counter that we sample the
+    unreliability to their responses. In order to counter that we sample the
     autorater more than once for a single invocation.
 
     The aggregator helps convert those multiple samples into a single result.
diff --git a/src/google/adk/evaluation/simulation/per_turn_user_simulator_quality_v1.py b/src/google/adk/evaluation/simulation/per_turn_user_simulator_quality_v1.py
index 5d6208a10a..ade65d72a7 100644
--- a/src/google/adk/evaluation/simulation/per_turn_user_simulator_quality_v1.py
+++ b/src/google/adk/evaluation/simulation/per_turn_user_simulator_quality_v1.py
@@ -58,7 +58,7 @@
 
 # Definition of Conversation History
 The Conversation History is the actual dialogue between the User Simulator and the Agent.
-The Conversation History may not be complete, but the exsisting dialogue should adhere to the Conversation Plan.
+The Conversation History may not be complete, but the existing dialogue should adhere to the Conversation Plan.
 The Conversation History may contain instances where the User Simulator troubleshoots an incorrect/inappropriate response from the Agent in order to enforce the Conversation Plan.
 The Conversation History is finished only when the User Simulator outputs `{stop_signal}` in its response. If this token is missing, the conversation between the User Simulator and the Agent has not finished, and more turns can be generated.
 
@@ -171,7 +171,7 @@ def _parse_llm_response(response: str) -> Label:
       response,
   )
 
-  # If there was not match for "is_valid", return NOT_FOUND
+  # If there was no match for "is_valid", return NOT_FOUND
   if is_valid_match is None:
     return Label.NOT_FOUND
 
diff --git a/src/google/adk/flows/llm_flows/contents.py b/src/google/adk/flows/llm_flows/contents.py
index 046a443a25..0a17ade66e 100644
--- a/src/google/adk/flows/llm_flows/contents.py
+++ b/src/google/adk/flows/llm_flows/contents.py
@@ -29,6 +29,7 @@
 from .functions import remove_client_function_call_id
 from .functions import REQUEST_CONFIRMATION_FUNCTION_CALL_NAME
 from .functions import REQUEST_EUC_FUNCTION_CALL_NAME
+from .functions import REQUEST_INPUT_FUNCTION_CALL_NAME
 
 logger = logging.getLogger('google_adk.' + __name__)
 
@@ -280,6 +281,7 @@ def _should_include_event_in_context(
       or _is_adk_framework_event(event)
       or _is_auth_event(event)
       or _is_request_confirmation_event(event)
+      or _is_request_input_event(event)
   )
 
 
@@ -675,6 +677,11 @@ def _is_adk_framework_event(event: Event) -> bool:
   return _is_function_call_event(event, 'adk_framework')
 
 
+def _is_request_input_event(event: Event) -> bool:
+  """Checks if the event is a request input event."""
+  return _is_function_call_event(event, REQUEST_INPUT_FUNCTION_CALL_NAME)
+
+
 def _is_live_model_audio_event_with_inline_data(event: Event) -> bool:
   """Check if the event is a live/bidi audio event with inline data.
 
diff --git a/src/google/adk/flows/llm_flows/functions.py b/src/google/adk/flows/llm_flows/functions.py
index ec1cd2300a..e3120badbd 100644
--- a/src/google/adk/flows/llm_flows/functions.py
+++ b/src/google/adk/flows/llm_flows/functions.py
@@ -49,6 +49,7 @@
 AF_FUNCTION_CALL_ID_PREFIX = 'adk-'
 REQUEST_EUC_FUNCTION_CALL_NAME = 'adk_request_credential'
 REQUEST_CONFIRMATION_FUNCTION_CALL_NAME = 'adk_request_confirmation'
+REQUEST_INPUT_FUNCTION_CALL_NAME = 'adk_request_input'
 
 logger = logging.getLogger('google_adk.' + __name__)
 
@@ -410,7 +411,7 @@ async def _run_with_trace():
       function_response = altered_function_response
 
     if tool.is_long_running:
-      # Allow long running function to return None to not provide function
+      # Allow long-running function to return None to not provide function
       # response.
       if not function_response:
         return None
@@ -893,7 +894,7 @@ def find_matching_function_call(
     )
     for i in range(len(events) - 2, -1, -1):
       event = events[i]
-      # looking for the system long running request euc function call
+      # looking for the system long-running request euc function call
       function_calls = event.get_function_calls()
       if not function_calls:
         continue
diff --git a/src/google/adk/memory/vertex_ai_rag_memory_service.py b/src/google/adk/memory/vertex_ai_rag_memory_service.py
index bd6e9dc2b0..001b30b541 100644
--- a/src/google/adk/memory/vertex_ai_rag_memory_service.py
+++ b/src/google/adk/memory/vertex_ai_rag_memory_service.py
@@ -52,7 +52,7 @@ def __init__(
           or ``{rag_corpus_id}``
         similarity_top_k: The number of contexts to retrieve.
         vector_distance_threshold: Only returns contexts with vector distance
-          smaller than the threshold..
+          smaller than the threshold.
     """
     self._vertex_rag_store = types.VertexRagStore(
         rag_resources=[
diff --git a/src/google/adk/models/google_llm.py b/src/google/adk/models/google_llm.py
index 733719b422..9015e4b4ee 100644
--- a/src/google/adk/models/google_llm.py
+++ b/src/google/adk/models/google_llm.py
@@ -58,7 +58,7 @@
 
 
 class _ResourceExhaustedError(ClientError):
-  """Represents an resources exhausted error received from the Model."""
+  """Represents a resources exhausted error received from the Model."""
 
   def __init__(
       self,
diff --git a/src/google/adk/models/lite_llm.py b/src/google/adk/models/lite_llm.py
index 4131e47b8c..79182d7b0a 100644
--- a/src/google/adk/models/lite_llm.py
+++ b/src/google/adk/models/lite_llm.py
@@ -152,7 +152,7 @@
 def _ensure_litellm_imported() -> None:
   """Imports LiteLLM with safe defaults.
 
-  LiteLLM defaults to DEV mode, which auto-loads a local `.env` at import time.
+  LiteLLM defaults to DEV mode, which autoloads a local `.env` at import time.
   ADK should not implicitly load `.env` just because LiteLLM is installed.
 
   Users can opt into LiteLLM's default behavior by setting LITELLM_MODE=DEV.
diff --git a/src/google/adk/plugins/base_plugin.py b/src/google/adk/plugins/base_plugin.py
index 2912ba0a7e..3639f61aa2 100644
--- a/src/google/adk/plugins/base_plugin.py
+++ b/src/google/adk/plugins/base_plugin.py
@@ -68,7 +68,7 @@ class BasePlugin(ABC):
   callback in the chain. For example, if a plugin modifies the tool input with
   before_tool_callback, the modified tool input will be passed to the
   before_tool_callback of the next plugin, and further passed to the agent
-  callbacks if not short circuited.
+  callbacks if not short-circuited.
 
   To use a plugin, implement the desired callback methods and pass an instance
   of your custom plugin class to the ADK Runner.
diff --git a/src/google/adk/plugins/bigquery_agent_analytics_plugin.py b/src/google/adk/plugins/bigquery_agent_analytics_plugin.py
index 0c12d39a9c..84fa66eb66 100644
--- a/src/google/adk/plugins/bigquery_agent_analytics_plugin.py
+++ b/src/google/adk/plugins/bigquery_agent_analytics_plugin.py
@@ -699,6 +699,13 @@ def __init__(
     self._batch_processor_task: Optional[asyncio.Task] = None
     self._shutdown = False
 
+  async def flush(self) -> None:
+    """Flushes the queue by waiting for it to be empty."""
+    if self._queue.empty():
+      return
+    # Wait for all items in the queue to be processed
+    await self._queue.join()
+
   async def start(self):
     """Starts the batch writer worker task."""
     if self._batch_processor_task is None:
@@ -1516,6 +1523,11 @@ def _format_content_safely(
       logger.warning("Content formatter failed: %s", e)
       return "[FORMATTING FAILED]", False
 
+  async def flush(self) -> None:
+    """Flushes any pending events to BigQuery."""
+    if self.batch_processor:
+      await self.batch_processor.flush()
+
   async def _lazy_setup(self, **kwargs) -> None:
     """Performs lazy initialization of BigQuery clients and resources."""
     if self._started:
@@ -1947,6 +1959,8 @@ async def after_run_callback(
     await self._log_event(
         "INVOCATION_COMPLETED", CallbackContext(invocation_context)
     )
+    # Ensure all logs are flushed before the agent returns
+    await self.flush()
 
   async def before_agent_callback(
       self, *, agent: Any, callback_context: CallbackContext, **kwargs
diff --git a/src/google/adk/plugins/logging_plugin.py b/src/google/adk/plugins/logging_plugin.py
index f44a75e04b..df37ee7ee4 100644
--- a/src/google/adk/plugins/logging_plugin.py
+++ b/src/google/adk/plugins/logging_plugin.py
@@ -36,7 +36,7 @@
 class LoggingPlugin(BasePlugin):
   """A plugin that logs important information at each callback point.
 
-  This plugin helps printing all critical events in the console. It is not a
+  This plugin helps print all critical events in the console. It is not a
   replacement of existing logging in ADK. It rather helps terminal based
   debugging by showing all logs in the console, and serves as a simple demo for
   everyone to leverage when developing new plugins.
diff --git a/src/google/adk/runners.py b/src/google/adk/runners.py
index b931561c4d..3aaa54e257 100644
--- a/src/google/adk/runners.py
+++ b/src/google/adk/runners.py
@@ -760,7 +760,7 @@ async def _exec_with_plugin(
     else:
       # Step 2: Otherwise continue with normal execution
       # Note for live/bidi:
-      # the transcription may arrive later then the action(function call
+      # the transcription may arrive later than the action(function call
       # event and thus function response event). In this case, the order of
       # transcription and function call event will be wrong if we just
       # append as it arrives. To address this, we should check if there is
@@ -770,7 +770,7 @@ async def _exec_with_plugin(
       # identified by checking if the transcription event is partial. When
       # the next transcription event is not partial, it means the previous
       # transcription is finished. Then if there is any buffered function
-      # call event, we should append them after this finished(non-parital)
+      # call event, we should append them after this finished(non-partial)
       # transcription event.
       buffered_events: list[Event] = []
       is_transcribing: bool = False
@@ -789,7 +789,7 @@ async def _exec_with_plugin(
               buffered_events.append(event)
               continue
             # Note for live/bidi: for audio response, it's considered as
-            # non-paritla event(event.partial=None)
+            # non-partial event(event.partial=None)
             # event.partial=False and event.partial=None are considered as
             # non-partial event; event.partial=True is considered as partial
             # event.
@@ -938,7 +938,7 @@ async def run_live(
     *   **Live Model Audio Events with Inline Data:** Events containing raw
         audio `Blob` data(`inline_data`).
     *   **Live Model Audio Events with File Data:** Both input and ouput audio
-        data are aggregated into a audio file saved into artifacts. The
+        data are aggregated into an audio file saved into artifacts. The
         reference to the file is saved in the event as `file_data`.
     *   **Usage Metadata:** Events containing token usage.
     *   **Transcription Events:** Both partial and non-partial transcription
@@ -948,7 +948,7 @@ async def run_live(
 
     **Events Saved to the Session:**
     *   **Live Model Audio Events with File Data:** Both input and ouput audio
-        data are aggregated into a audio file saved into artifacts. The
+        data are aggregated into an audio file saved into artifacts. The
         reference to the file is saved as event in the `file_data` to session
         if RunConfig.save_live_model_audio_to_session is True.
     *   **Usage Metadata Events:** Saved to the session.
@@ -1099,7 +1099,7 @@ def _find_agent_to_run(
     # If the last event is a function response, should send this response to
     # the agent that returned the corresponding function call regardless the
     # type of the agent. e.g. a remote a2a agent may surface a credential
-    # request as a special long running function tool call.
+    # request as a special long-running function tool call.
     event = find_matching_function_call(session.events)
     if event and event.author:
       return root_agent.find_agent(event.author)
diff --git a/src/google/adk/sessions/migration/migration_runner.py b/src/google/adk/sessions/migration/migration_runner.py
index 56acd810fb..edb5c83bcb 100644
--- a/src/google/adk/sessions/migration/migration_runner.py
+++ b/src/google/adk/sessions/migration/migration_runner.py
@@ -49,7 +49,7 @@ def upgrade(source_db_url: str, dest_db_url: str):
   LATEST_VERSION.
 
   If multiple migration steps are required, intermediate results are stored in
-  temporary SQLite database files. This means a multi-step migration
+  temporary SQLite database files. This means a multistep migration
   between other database types (e.g. PostgreSQL to PostgreSQL) will use
   SQLite for intermediate steps.
 
diff --git a/src/google/adk/tools/google_search_tool.py b/src/google/adk/tools/google_search_tool.py
index 6f7d1e52c6..406ad2189e 100644
--- a/src/google/adk/tools/google_search_tool.py
+++ b/src/google/adk/tools/google_search_tool.py
@@ -35,17 +35,26 @@ class GoogleSearchTool(BaseTool):
   local code execution.
   """
 
-  def __init__(self, *, bypass_multi_tools_limit: bool = False):
+  def __init__(
+      self,
+      *,
+      bypass_multi_tools_limit: bool = False,
+      model: str | None = None,
+  ):
     """Initializes the Google search tool.
 
     Args:
       bypass_multi_tools_limit: Whether to bypass the multi tools limitation,
         so that the tool can be used with other tools in the same agent.
+      model: Optional model name to use for processing the LLM request. If
+        provided, this model will be used instead of the model from the
+        incoming llm_request.
     """
 
     # Name and description are not used because this is a model built-in tool.
     super().__init__(name='google_search', description='google_search')
     self.bypass_multi_tools_limit = bypass_multi_tools_limit
+    self.model = model
 
   @override
   async def process_llm_request(
@@ -54,6 +63,10 @@ async def process_llm_request(
       tool_context: ToolContext,
       llm_request: LlmRequest,
   ) -> None:
+    # If a custom model is specified, use it instead of the original model
+    if self.model is not None:
+      llm_request.model = self.model
+
     llm_request.config = llm_request.config or types.GenerateContentConfig()
     llm_request.config.tools = llm_request.config.tools or []
     if is_gemini_1_model(llm_request.model):
diff --git a/tests/unittests/models/test_litellm.py b/tests/unittests/models/test_litellm.py
index 5ff541b834..2ebbc5dfe8 100644
--- a/tests/unittests/models/test_litellm.py
+++ b/tests/unittests/models/test_litellm.py
@@ -10,7 +10,7 @@
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
-# limitations under the Licens
+# limitations under the License
 
 import contextlib
 import json
diff --git a/tests/unittests/plugins/test_bigquery_agent_analytics_plugin.py b/tests/unittests/plugins/test_bigquery_agent_analytics_plugin.py
index 5f2474c0a1..77968a3196 100644
--- a/tests/unittests/plugins/test_bigquery_agent_analytics_plugin.py
+++ b/tests/unittests/plugins/test_bigquery_agent_analytics_plugin.py
@@ -2061,3 +2061,28 @@ async def test_otel_integration_real_provider(self, callback_context):
       assert finished_spans[0].name == "test_span"
       assert format(finished_spans[0].context.span_id, "016x") == span_id
       assert format(finished_spans[0].context.trace_id, "032x") == trace_id
+
+  @pytest.mark.asyncio
+  async def test_flush_mechanism(
+      self,
+      bq_plugin_inst,
+      mock_write_client,
+      dummy_arrow_schema,
+      invocation_context,
+  ):
+    """Verifies that flush() forces pending events to be written."""
+    # Log an event
+    bigquery_agent_analytics_plugin.TraceManager.push_span(invocation_context)
+    await bq_plugin_inst.before_run_callback(
+        invocation_context=invocation_context
+    )
+
+    # Call flush - this should block until the event is written
+    await bq_plugin_inst.flush()
+
+    # Verify write called
+    mock_write_client.append_rows.assert_called_once()
+    log_entry = await _get_captured_event_dict_async(
+        mock_write_client, dummy_arrow_schema
+    )
+    assert log_entry["event_type"] == "INVOCATION_STARTING"
diff --git a/tests/unittests/runners/test_runner_rewind.py b/tests/unittests/runners/test_runner_rewind.py
index f8010238bd..035d28437b 100644
--- a/tests/unittests/runners/test_runner_rewind.py
+++ b/tests/unittests/runners/test_runner_rewind.py
@@ -130,14 +130,14 @@ async def test_rewind_async_with_state_and_artifacts(self):
         rewind_before_invocation_id="invocation2",
     )
 
-    # 3. Verify state and artifacts are rewinded
+    # 3. Verify state and artifacts are rewound
     session = await runner.session_service.get_session(
         app_name=runner.app_name, user_id=user_id, session_id=session_id
     )
     # After rewind before invocation2, only event1 state delta should apply.
     assert session.state["k1"] == "v1"
     assert not session.state["k2"]
-    # f1 should be rewinded to v0
+    # f1 should be rewound to v0
     assert await runner.artifact_service.load_artifact(
         app_name=runner.app_name,
         user_id=user_id,
@@ -226,7 +226,7 @@ async def test_rewind_async_not_first_invocation(self):
         rewind_before_invocation_id="invocation3",
     )
 
-    # 3. Verify state and artifacts are rewinded
+    # 3. Verify state and artifacts are rewound
     session = await runner.session_service.get_session(
         app_name=runner.app_name, user_id=user_id, session_id=session_id
     )
diff --git a/tests/unittests/tools/test_google_search_tool.py b/tests/unittests/tools/test_google_search_tool.py
index aaffb8d44a..ad5d46b59e 100644
--- a/tests/unittests/tools/test_google_search_tool.py
+++ b/tests/unittests/tools/test_google_search_tool.py
@@ -432,3 +432,46 @@ async def test_process_llm_request_gemini_version_specifics(self):
       assert len(llm_request.config.tools) == 1
       assert llm_request.config.tools[0].google_search is not None
       assert llm_request.config.tools[0].google_search_retrieval is None
+
+  @pytest.mark.asyncio
+  @pytest.mark.parametrize(
+      (
+          'tool_model',
+          'request_model',
+          'expected_model',
+      ),
+      [
+          (
+              'gemini-2.5-flash-lite',
+              'gemini-2.5-flash',
+              'gemini-2.5-flash-lite',
+          ),
+          (
+              None,
+              'gemini-2.5-flash',
+              'gemini-2.5-flash',
+          ),
+      ],
+      ids=['with_custom_model', 'without_custom_model'],
+  )
+  async def test_process_llm_request_custom_model_behavior(
+      self,
+      tool_model,
+      request_model,
+      expected_model,
+  ):
+    """Tests custom model parameter behavior in process_llm_request."""
+    tool = GoogleSearchTool(model=tool_model)
+    tool_context = await _create_tool_context()
+
+    llm_request = LlmRequest(
+        model=request_model, config=types.GenerateContentConfig()
+    )
+
+    await tool.process_llm_request(
+        tool_context=tool_context, llm_request=llm_request
+    )
+
+    assert llm_request.model == expected_model
+    assert llm_request.config.tools is not None
+    assert len(llm_request.config.tools) == 1