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adk-python/tests/unittests/streaming/test_streaming.py
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Python

# Copyright 2025 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# 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 License.
import asyncio
from typing import AsyncGenerator
from google.adk.agents.live_request_queue import LiveRequestQueue
from google.adk.agents.llm_agent import Agent
from google.adk.models.llm_response import LlmResponse
from google.genai import types
import pytest
from .. import testing_utils
def test_streaming():
response1 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1])
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[],
)
runner = testing_utils.InMemoryRunner(
root_agent=root_agent, response_modalities=['AUDIO']
)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(data=b'\x00\xFF', mime_type='audio/pcm')
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert (
len(res_events) > 0
), 'Expected at least one response, but got an empty list.'
def test_live_streaming_function_call_single():
"""Test live streaming with a single function call response."""
# Create a function call response
function_call = types.Part.from_function_call(
name='get_weather', args={'location': 'San Francisco', 'unit': 'celsius'}
)
# Create LLM responses: function call followed by turn completion
response1 = LlmResponse(
content=types.Content(role='model', parts=[function_call]),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock function that would be called
def get_weather(location: str, unit: str = 'celsius') -> dict:
return {
'temperature': 22,
'condition': 'sunny',
'location': location,
'unit': unit,
}
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[get_weather],
)
# Create a custom runner class that collects all events
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
# Collect a reasonable number of events, don't wait for too many
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
# Return whatever we collected so far
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(
data=b'What is the weather in San Francisco?', mime_type='audio/pcm'
)
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check that we got a function call event
function_call_found = False
function_response_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call and part.function_call.name == 'get_weather':
function_call_found = True
assert part.function_call.args['location'] == 'San Francisco'
assert part.function_call.args['unit'] == 'celsius'
elif (
part.function_response
and part.function_response.name == 'get_weather'
):
function_response_found = True
assert part.function_response.response['temperature'] == 22
assert part.function_response.response['condition'] == 'sunny'
assert function_call_found, 'Expected a function call event.'
# Note: In live streaming, function responses might be handled differently,
# so we check for the function call which is the primary indicator of function calling working
def test_live_streaming_function_call_multiple():
"""Test live streaming with multiple function calls in sequence."""
# Create multiple function call responses
function_call1 = types.Part.from_function_call(
name='get_weather', args={'location': 'San Francisco'}
)
function_call2 = types.Part.from_function_call(
name='get_time', args={'timezone': 'PST'}
)
# Create LLM responses: two function calls followed by turn completion
response1 = LlmResponse(
content=types.Content(role='model', parts=[function_call1]),
turn_complete=False,
)
response2 = LlmResponse(
content=types.Content(role='model', parts=[function_call2]),
turn_complete=False,
)
response3 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2, response3])
# Mock functions
def get_weather(location: str) -> dict:
return {'temperature': 22, 'condition': 'sunny', 'location': location}
def get_time(timezone: str) -> dict:
return {'time': '14:30', 'timezone': timezone}
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[get_weather, get_time],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(
data=b'What is the weather and current time?', mime_type='audio/pcm'
)
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check function calls
weather_call_found = False
time_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call:
if part.function_call.name == 'get_weather':
weather_call_found = True
assert part.function_call.args['location'] == 'San Francisco'
elif part.function_call.name == 'get_time':
time_call_found = True
assert part.function_call.args['timezone'] == 'PST'
# In live streaming, we primarily check that function calls are generated correctly
assert (
weather_call_found or time_call_found
), 'Expected at least one function call.'
def test_live_streaming_function_call_parallel():
"""Test live streaming with parallel function calls."""
# Create parallel function calls in the same response
function_call1 = types.Part.from_function_call(
name='get_weather', args={'location': 'San Francisco'}
)
function_call2 = types.Part.from_function_call(
name='get_weather', args={'location': 'New York'}
)
# Create LLM response with parallel function calls
response1 = LlmResponse(
content=types.Content(
role='model', parts=[function_call1, function_call2]
),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock function
def get_weather(location: str) -> dict:
temperatures = {'San Francisco': 22, 'New York': 15}
return {'temperature': temperatures.get(location, 20), 'location': location}
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[get_weather],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(
data=b'Compare weather in SF and NYC', mime_type='audio/pcm'
)
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check parallel function calls
sf_call_found = False
nyc_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call and part.function_call.name == 'get_weather':
location = part.function_call.args['location']
if location == 'San Francisco':
sf_call_found = True
elif location == 'New York':
nyc_call_found = True
assert (
sf_call_found and nyc_call_found
), 'Expected both location function calls.'
def test_live_streaming_function_call_with_error():
"""Test live streaming with function call that returns an error."""
# Create a function call response
function_call = types.Part.from_function_call(
name='get_weather', args={'location': 'Invalid Location'}
)
# Create LLM responses
response1 = LlmResponse(
content=types.Content(role='model', parts=[function_call]),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock function that returns an error for invalid locations
def get_weather(location: str) -> dict:
if location == 'Invalid Location':
return {'error': 'Location not found'}
return {'temperature': 22, 'condition': 'sunny', 'location': location}
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[get_weather],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(
data=b'What is weather in Invalid Location?', mime_type='audio/pcm'
)
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check that we got the function call (error handling happens at execution time)
function_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call and part.function_call.name == 'get_weather':
function_call_found = True
assert part.function_call.args['location'] == 'Invalid Location'
assert function_call_found, 'Expected function call event with error case.'
def test_live_streaming_function_call_sync_tool():
"""Test live streaming with synchronous function call."""
# Create a function call response
function_call = types.Part.from_function_call(
name='calculate', args={'x': 5, 'y': 3}
)
# Create LLM responses
response1 = LlmResponse(
content=types.Content(role='model', parts=[function_call]),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock sync function
def calculate(x: int, y: int) -> dict:
return {'result': x + y, 'operation': 'addition'}
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[calculate],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(data=b'Calculate 5 plus 3', mime_type='audio/pcm')
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check function call
function_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call and part.function_call.name == 'calculate':
function_call_found = True
assert part.function_call.args['x'] == 5
assert part.function_call.args['y'] == 3
assert function_call_found, 'Expected calculate function call event.'
def test_live_streaming_simple_streaming_tool():
"""Test live streaming with a simple streaming tool (non-video)."""
# Create a function call response for the streaming tool
function_call = types.Part.from_function_call(
name='monitor_stock_price', args={'stock_symbol': 'AAPL'}
)
# Create LLM responses
response1 = LlmResponse(
content=types.Content(role='model', parts=[function_call]),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock simple streaming tool (without return type annotation to avoid parsing issues)
async def monitor_stock_price(stock_symbol: str):
"""Mock streaming tool that monitors stock prices."""
# Simulate some streaming updates
yield f'Stock {stock_symbol} price: $150'
await asyncio.sleep(0.1)
yield f'Stock {stock_symbol} price: $155'
await asyncio.sleep(0.1)
yield f'Stock {stock_symbol} price: $160'
def stop_streaming(function_name: str):
"""Stop the streaming tool."""
pass
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[monitor_stock_price, stop_streaming],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(data=b'Monitor AAPL stock price', mime_type='audio/pcm')
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check that we got the streaming tool function call
function_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if (
part.function_call
and part.function_call.name == 'monitor_stock_price'
):
function_call_found = True
assert part.function_call.args['stock_symbol'] == 'AAPL'
assert (
function_call_found
), 'Expected monitor_stock_price function call event.'
def test_live_streaming_video_streaming_tool():
"""Test live streaming with a video streaming tool."""
# Create a function call response for the video streaming tool
function_call = types.Part.from_function_call(
name='monitor_video_stream', args={}
)
# Create LLM responses
response1 = LlmResponse(
content=types.Content(role='model', parts=[function_call]),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock video streaming tool (without return type annotation to avoid parsing issues)
async def monitor_video_stream(input_stream: LiveRequestQueue):
"""Mock video streaming tool that processes video frames."""
# Simulate processing a few frames from the input stream
frame_count = 0
while frame_count < 3: # Process a few frames
try:
# Try to get a frame from the queue with timeout
live_req = await asyncio.wait_for(input_stream.get(), timeout=0.1)
if live_req.blob and live_req.blob.mime_type == 'image/jpeg':
frame_count += 1
yield f'Processed frame {frame_count}: detected 2 people'
except asyncio.TimeoutError:
# No more frames, simulate detection anyway for testing
frame_count += 1
yield f'Simulated frame {frame_count}: detected 1 person'
await asyncio.sleep(0.1)
def stop_streaming(function_name: str):
"""Stop the streaming tool."""
pass
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[monitor_video_stream, stop_streaming],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
# Send some mock video frames
live_request_queue.send_realtime(
blob=types.Blob(data=b'fake_jpeg_data_1', mime_type='image/jpeg')
)
live_request_queue.send_realtime(
blob=types.Blob(data=b'fake_jpeg_data_2', mime_type='image/jpeg')
)
live_request_queue.send_realtime(
blob=types.Blob(data=b'Monitor video stream', mime_type='audio/pcm')
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check that we got the video streaming tool function call
function_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if (
part.function_call
and part.function_call.name == 'monitor_video_stream'
):
function_call_found = True
assert (
function_call_found
), 'Expected monitor_video_stream function call event.'
def test_live_streaming_stop_streaming_tool():
"""Test live streaming with stop_streaming functionality."""
# Create function calls for starting and stopping a streaming tool
start_function_call = types.Part.from_function_call(
name='monitor_stock_price', args={'stock_symbol': 'TSLA'}
)
stop_function_call = types.Part.from_function_call(
name='stop_streaming', args={'function_name': 'monitor_stock_price'}
)
# Create LLM responses: start streaming, then stop streaming
response1 = LlmResponse(
content=types.Content(role='model', parts=[start_function_call]),
turn_complete=False,
)
response2 = LlmResponse(
content=types.Content(role='model', parts=[stop_function_call]),
turn_complete=False,
)
response3 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2, response3])
# Mock streaming tool and stop function
async def monitor_stock_price(stock_symbol: str):
"""Mock streaming tool that monitors stock prices."""
yield f'Started monitoring {stock_symbol}'
while True: # Infinite stream (would be stopped by stop_streaming)
yield f'Stock {stock_symbol} price update'
await asyncio.sleep(0.1)
def stop_streaming(function_name: str):
"""Stop the streaming tool."""
return f'Stopped streaming for {function_name}'
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[monitor_stock_price, stop_streaming],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(data=b'Monitor TSLA and then stop', mime_type='audio/pcm')
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check that we got both function calls
monitor_call_found = False
stop_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call:
if part.function_call.name == 'monitor_stock_price':
monitor_call_found = True
assert part.function_call.args['stock_symbol'] == 'TSLA'
elif part.function_call.name == 'stop_streaming':
stop_call_found = True
assert (
part.function_call.args['function_name']
== 'monitor_stock_price'
)
assert monitor_call_found, 'Expected monitor_stock_price function call event.'
assert stop_call_found, 'Expected stop_streaming function call event.'
def test_live_streaming_multiple_streaming_tools():
"""Test live streaming with multiple streaming tools running simultaneously."""
# Create function calls for multiple streaming tools
stock_function_call = types.Part.from_function_call(
name='monitor_stock_price', args={'stock_symbol': 'NVDA'}
)
video_function_call = types.Part.from_function_call(
name='monitor_video_stream', args={}
)
# Create LLM responses: start both streaming tools
response1 = LlmResponse(
content=types.Content(
role='model', parts=[stock_function_call, video_function_call]
),
turn_complete=False,
)
response2 = LlmResponse(
turn_complete=True,
)
mock_model = testing_utils.MockModel.create([response1, response2])
# Mock streaming tools
async def monitor_stock_price(stock_symbol: str):
"""Mock streaming tool that monitors stock prices."""
yield f'Stock {stock_symbol} price: $800'
await asyncio.sleep(0.1)
yield f'Stock {stock_symbol} price: $805'
async def monitor_video_stream(input_stream: LiveRequestQueue):
"""Mock video streaming tool."""
yield 'Video monitoring started'
await asyncio.sleep(0.1)
yield 'Detected motion in video stream'
def stop_streaming(function_name: str):
"""Stop the streaming tool."""
pass
root_agent = Agent(
name='root_agent',
model=mock_model,
tools=[monitor_stock_price, monitor_video_stream, stop_streaming],
)
# Use the custom runner
class CustomTestRunner(testing_utils.InMemoryRunner):
def run_live(
self,
live_request_queue: LiveRequestQueue,
run_config: testing_utils.RunConfig = None,
) -> list[testing_utils.Event]:
collected_responses = []
async def consume_responses(session: testing_utils.Session):
run_res = self.runner.run_live(
session=session,
live_request_queue=live_request_queue,
run_config=run_config or testing_utils.RunConfig(),
)
async for response in run_res:
collected_responses.append(response)
if len(collected_responses) >= 3:
return
try:
session = self.session
# Create a new event loop to avoid nested event loop issues
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(
asyncio.wait_for(consume_responses(session), timeout=5.0)
)
finally:
loop.close()
except (asyncio.TimeoutError, asyncio.CancelledError):
pass
return collected_responses
runner = CustomTestRunner(root_agent=root_agent)
live_request_queue = LiveRequestQueue()
live_request_queue.send_realtime(
blob=types.Blob(
data=b'Monitor both stock and video', mime_type='audio/pcm'
)
)
res_events = runner.run_live(live_request_queue)
assert res_events is not None, 'Expected a list of events, got None.'
assert len(res_events) >= 1, 'Expected at least one event.'
# Check that we got both streaming tool function calls
stock_call_found = False
video_call_found = False
for event in res_events:
if event.content and event.content.parts:
for part in event.content.parts:
if part.function_call:
if part.function_call.name == 'monitor_stock_price':
stock_call_found = True
assert part.function_call.args['stock_symbol'] == 'NVDA'
elif part.function_call.name == 'monitor_video_stream':
video_call_found = True
assert stock_call_found, 'Expected monitor_stock_price function call event.'
assert video_call_found, 'Expected monitor_video_stream function call event.'