Files
adk-python/tests/unittests/models/test_google_llm.py
T
Xiang (Sean) ZhouandCopybara-Service 584c8c6d91 fix: improve partial event handling and streaming aggregation
- Allow run_async to break on partial events instead of raising ValueError
- Generate aggregated streaming content regardless of finish_reason
- Add error_code and error_message to final streaming responses if model response is interrupted.

PiperOrigin-RevId: 781377328
2025-07-09 23:03:33 -07:00

1372 lines
43 KiB
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 os
import sys
from typing import Optional
from unittest import mock
from google.adk import version as adk_version
from google.adk.models.gemini_llm_connection import GeminiLlmConnection
from google.adk.models.google_llm import _AGENT_ENGINE_TELEMETRY_ENV_VARIABLE_NAME
from google.adk.models.google_llm import _AGENT_ENGINE_TELEMETRY_TAG
from google.adk.models.google_llm import Gemini
from google.adk.models.llm_request import LlmRequest
from google.adk.models.llm_response import LlmResponse
from google.adk.utils.variant_utils import GoogleLLMVariant
from google.genai import types
from google.genai import version as genai_version
from google.genai.types import Content
from google.genai.types import Part
import pytest
@pytest.fixture
def generate_content_response():
return types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part.from_text(text="Hello, how can I help you?")],
),
finish_reason=types.FinishReason.STOP,
)
]
)
@pytest.fixture
def gemini_llm():
return Gemini(model="gemini-1.5-flash")
@pytest.fixture
def llm_request():
return LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
@pytest.fixture
def mock_os_environ():
initial_env = os.environ.copy()
with mock.patch.dict(os.environ, initial_env, clear=False) as m:
yield m
def test_supported_models():
models = Gemini.supported_models()
assert len(models) == 3
assert models[0] == r"gemini-.*"
assert models[1] == r"projects\/.+\/locations\/.+\/endpoints\/.+"
assert (
models[2]
== r"projects\/.+\/locations\/.+\/publishers\/google\/models\/gemini.+"
)
def test_client_version_header():
model = Gemini(model="gemini-1.5-flash")
client = model.api_client
adk_header = (
f"google-adk/{adk_version.__version__} gl-python/{sys.version.split()[0]}"
)
genai_header = (
f"google-genai-sdk/{genai_version.__version__} gl-python/{sys.version.split()[0]} "
)
expected_header = genai_header + adk_header
assert (
expected_header
in client._api_client._http_options.headers["x-goog-api-client"]
)
assert (
expected_header in client._api_client._http_options.headers["user-agent"]
)
def test_client_version_header_with_agent_engine(mock_os_environ):
os.environ[_AGENT_ENGINE_TELEMETRY_ENV_VARIABLE_NAME] = "my_test_project"
model = Gemini(model="gemini-1.5-flash")
client = model.api_client
adk_header_base = f"google-adk/{adk_version.__version__}"
adk_header_with_telemetry = (
f"{adk_header_base}+{_AGENT_ENGINE_TELEMETRY_TAG}"
f" gl-python/{sys.version.split()[0]}"
)
genai_header = (
f"google-genai-sdk/{genai_version.__version__} "
f"gl-python/{sys.version.split()[0]} "
)
expected_header = genai_header + adk_header_with_telemetry
assert (
expected_header
in client._api_client._http_options.headers["x-goog-api-client"]
)
assert (
expected_header in client._api_client._http_options.headers["user-agent"]
)
def test_maybe_append_user_content(gemini_llm, llm_request):
# Test with user content already present
gemini_llm._maybe_append_user_content(llm_request)
assert len(llm_request.contents) == 1
# Test with model content as the last message
llm_request.contents.append(
Content(role="model", parts=[Part.from_text(text="Response")])
)
gemini_llm._maybe_append_user_content(llm_request)
assert len(llm_request.contents) == 3
assert llm_request.contents[-1].role == "user"
assert "Continue processing" in llm_request.contents[-1].parts[0].text
@pytest.mark.asyncio
async def test_generate_content_async(
gemini_llm, llm_request, generate_content_response
):
with mock.patch.object(gemini_llm, "api_client") as mock_client:
# Create a mock coroutine that returns the generate_content_response
async def mock_coro():
return generate_content_response
# Assign the coroutine to the mocked method
mock_client.aio.models.generate_content.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=False
)
]
assert len(responses) == 1
assert isinstance(responses[0], LlmResponse)
assert responses[0].content.parts[0].text == "Hello, how can I help you?"
mock_client.aio.models.generate_content.assert_called_once()
@pytest.mark.asyncio
async def test_generate_content_async_stream(gemini_llm, llm_request):
with mock.patch.object(gemini_llm, "api_client") as mock_client:
# Create mock stream responses
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
mock_responses = [
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="Hello")]
),
finish_reason=None,
)
]
),
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text=", how")]
),
finish_reason=None,
)
]
),
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part.from_text(text=" can I help you?")],
),
finish_reason=types.FinishReason.STOP,
)
]
),
]
# Create a mock coroutine that returns the MockAsyncIterator
async def mock_coro():
return MockAsyncIterator(mock_responses)
# Set the mock to return the coroutine
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Assertions remain the same
assert len(responses) == 4
assert responses[0].partial is True
assert responses[1].partial is True
assert responses[2].partial is True
assert responses[3].content.parts[0].text == "Hello, how can I help you?"
mock_client.aio.models.generate_content_stream.assert_called_once()
@pytest.mark.asyncio
async def test_generate_content_async_stream_preserves_thinking_and_text_parts(
gemini_llm, llm_request
):
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self._iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self._iter)
except StopIteration:
raise StopAsyncIteration
response1 = types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part(text="Think1", thought=True)],
),
finish_reason=None,
)
]
)
response2 = types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part(text="Think2", thought=True)],
),
finish_reason=None,
)
]
)
response3 = types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part.from_text(text="Answer.")],
),
finish_reason=types.FinishReason.STOP,
)
]
)
async def mock_coro():
return MockAsyncIterator([response1, response2, response3])
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
assert len(responses) == 4
assert responses[0].partial is True
assert responses[1].partial is True
assert responses[2].partial is True
assert responses[3].content.parts[0].text == "Think1Think2"
assert responses[3].content.parts[0].thought is True
assert responses[3].content.parts[1].text == "Answer."
mock_client.aio.models.generate_content_stream.assert_called_once()
@pytest.mark.asyncio
async def test_connect(gemini_llm, llm_request):
# Create a mock connection
mock_connection = mock.MagicMock(spec=GeminiLlmConnection)
# Create a mock context manager
class MockContextManager:
async def __aenter__(self):
return mock_connection
async def __aexit__(self, *args):
pass
# Mock the connect method at the class level
with mock.patch(
"google.adk.models.google_llm.Gemini.connect",
return_value=MockContextManager(),
):
async with gemini_llm.connect(llm_request) as connection:
assert connection is mock_connection
@pytest.mark.asyncio
async def test_generate_content_async_with_custom_headers(
gemini_llm, llm_request, generate_content_response
):
"""Test that tracking headers are updated when custom headers are provided."""
# Add custom headers to the request config
custom_headers = {"custom-header": "custom-value"}
for key in gemini_llm._tracking_headers:
custom_headers[key] = "custom " + gemini_llm._tracking_headers[key]
llm_request.config.http_options = types.HttpOptions(headers=custom_headers)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
# Create a mock coroutine that returns the generate_content_response
async def mock_coro():
return generate_content_response
mock_client.aio.models.generate_content.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=False
)
]
# Verify that the config passed to generate_content contains merged headers
mock_client.aio.models.generate_content.assert_called_once()
call_args = mock_client.aio.models.generate_content.call_args
config_arg = call_args.kwargs["config"]
for key, value in config_arg.http_options.headers.items():
if key in gemini_llm._tracking_headers:
assert value == gemini_llm._tracking_headers[key]
else:
assert value == custom_headers[key]
assert len(responses) == 1
assert isinstance(responses[0], LlmResponse)
@pytest.mark.asyncio
async def test_generate_content_async_stream_with_custom_headers(
gemini_llm, llm_request
):
"""Test that tracking headers are updated when custom headers are provided in streaming mode."""
# Add custom headers to the request config
custom_headers = {"custom-header": "custom-value"}
llm_request.config.http_options = types.HttpOptions(headers=custom_headers)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
# Create mock stream responses
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
mock_responses = [
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="Hello")]
),
finish_reason=types.FinishReason.STOP,
)
]
)
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Verify that the config passed to generate_content_stream contains merged headers
mock_client.aio.models.generate_content_stream.assert_called_once()
call_args = mock_client.aio.models.generate_content_stream.call_args
config_arg = call_args.kwargs["config"]
expected_headers = custom_headers.copy()
expected_headers.update(gemini_llm._tracking_headers)
assert config_arg.http_options.headers == expected_headers
assert len(responses) == 2
@pytest.mark.asyncio
async def test_generate_content_async_without_custom_headers(
gemini_llm, llm_request, generate_content_response
):
"""Test that tracking headers are not modified when no custom headers exist."""
# Ensure no http_options exist initially
llm_request.config.http_options = None
with mock.patch.object(gemini_llm, "api_client") as mock_client:
async def mock_coro():
return generate_content_response
mock_client.aio.models.generate_content.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=False
)
]
# Verify that the config passed to generate_content has no http_options
mock_client.aio.models.generate_content.assert_called_once()
call_args = mock_client.aio.models.generate_content.call_args
config_arg = call_args.kwargs["config"]
assert config_arg.http_options is None
assert len(responses) == 1
def test_live_api_version_vertex_ai(gemini_llm):
"""Test that _live_api_version returns 'v1beta1' for Vertex AI backend."""
with mock.patch.object(
gemini_llm, "_api_backend", GoogleLLMVariant.VERTEX_AI
):
assert gemini_llm._live_api_version == "v1beta1"
def test_live_api_version_gemini_api(gemini_llm):
"""Test that _live_api_version returns 'v1alpha' for Gemini API backend."""
with mock.patch.object(
gemini_llm, "_api_backend", GoogleLLMVariant.GEMINI_API
):
assert gemini_llm._live_api_version == "v1alpha"
def test_live_api_client_properties(gemini_llm):
"""Test that _live_api_client is properly configured with tracking headers and API version."""
with mock.patch.object(
gemini_llm, "_api_backend", GoogleLLMVariant.VERTEX_AI
):
client = gemini_llm._live_api_client
# Verify that the client has the correct headers and API version
http_options = client._api_client._http_options
assert http_options.api_version == "v1beta1"
# Check that tracking headers are included
tracking_headers = gemini_llm._tracking_headers
for key, value in tracking_headers.items():
assert key in http_options.headers
assert value in http_options.headers[key]
@pytest.mark.asyncio
async def test_connect_with_custom_headers(gemini_llm, llm_request):
"""Test that connect method updates tracking headers and API version when custom headers are provided."""
# Setup request with live connect config and custom headers
custom_headers = {"custom-live-header": "live-value"}
llm_request.live_connect_config = types.LiveConnectConfig(
http_options=types.HttpOptions(headers=custom_headers)
)
mock_live_session = mock.AsyncMock()
# Mock the _live_api_client to return a mock client
with mock.patch.object(gemini_llm, "_live_api_client") as mock_live_client:
# Create a mock context manager
class MockLiveConnect:
async def __aenter__(self):
return mock_live_session
async def __aexit__(self, *args):
pass
mock_live_client.aio.live.connect.return_value = MockLiveConnect()
async with gemini_llm.connect(llm_request) as connection:
# Verify that the connect method was called with the right config
mock_live_client.aio.live.connect.assert_called_once()
call_args = mock_live_client.aio.live.connect.call_args
config_arg = call_args.kwargs["config"]
# Verify that tracking headers were merged with custom headers
expected_headers = custom_headers.copy()
expected_headers.update(gemini_llm._tracking_headers)
assert config_arg.http_options.headers == expected_headers
# Verify that API version was set
assert config_arg.http_options.api_version == gemini_llm._live_api_version
# Verify that system instruction and tools were set
assert config_arg.system_instruction is not None
assert config_arg.tools == llm_request.config.tools
# Verify connection is properly wrapped
assert isinstance(connection, GeminiLlmConnection)
@pytest.mark.asyncio
async def test_connect_without_custom_headers(gemini_llm, llm_request):
"""Test that connect method works properly when no custom headers are provided."""
# Setup request with live connect config but no custom headers
llm_request.live_connect_config = types.LiveConnectConfig()
mock_live_session = mock.AsyncMock()
with mock.patch.object(gemini_llm, "_live_api_client") as mock_live_client:
class MockLiveConnect:
async def __aenter__(self):
return mock_live_session
async def __aexit__(self, *args):
pass
mock_live_client.aio.live.connect.return_value = MockLiveConnect()
async with gemini_llm.connect(llm_request) as connection:
# Verify that the connect method was called with the right config
mock_live_client.aio.live.connect.assert_called_once()
call_args = mock_live_client.aio.live.connect.call_args
config_arg = call_args.kwargs["config"]
# Verify that http_options remains None since no custom headers were provided
assert config_arg.http_options is None
# Verify that system instruction and tools were still set
assert config_arg.system_instruction is not None
assert config_arg.tools == llm_request.config.tools
assert isinstance(connection, GeminiLlmConnection)
@pytest.mark.parametrize(
(
"api_backend, "
"expected_file_display_name, "
"expected_inline_display_name, "
"expected_labels"
),
[
(
GoogleLLMVariant.GEMINI_API,
None,
None,
None,
),
(
GoogleLLMVariant.VERTEX_AI,
"My Test PDF",
"My Test Image",
{"key": "value"},
),
],
)
def test_preprocess_request_handles_backend_specific_fields(
gemini_llm: Gemini,
api_backend: GoogleLLMVariant,
expected_file_display_name: Optional[str],
expected_inline_display_name: Optional[str],
expected_labels: Optional[str],
):
"""
Tests that _preprocess_request correctly sanitizes fields based on the API backend.
- For GEMINI_API, it should remove 'display_name' from file/inline data
and remove 'labels' from the config.
- For VERTEX_AI, it should leave these fields untouched.
"""
# Arrange: Create a request with fields that need to be preprocessed.
llm_request_with_files = LlmRequest(
model="gemini-1.5-flash",
contents=[
Content(
role="user",
parts=[
Part(
file_data=types.FileData(
file_uri="gs://bucket/file.pdf",
mime_type="application/pdf",
display_name="My Test PDF",
)
),
Part(
inline_data=types.Blob(
data=b"some_bytes",
mime_type="image/png",
display_name="My Test Image",
)
),
],
)
],
config=types.GenerateContentConfig(labels={"key": "value"}),
)
# Mock the _api_backend property to control the test scenario
with mock.patch.object(
Gemini, "_api_backend", new_callable=mock.PropertyMock
) as mock_backend:
mock_backend.return_value = api_backend
# Act: Run the preprocessing method
gemini_llm._preprocess_request(llm_request_with_files)
# Assert: Check if the fields were correctly processed
file_part = llm_request_with_files.contents[0].parts[0]
inline_part = llm_request_with_files.contents[0].parts[1]
assert file_part.file_data.display_name == expected_file_display_name
assert inline_part.inline_data.display_name == expected_inline_display_name
assert llm_request_with_files.config.labels == expected_labels
@pytest.mark.asyncio
async def test_generate_content_async_stream_aggregated_content_regardless_of_finish_reason():
"""Test that aggregated content is generated regardless of finish_reason."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
# Test with different finish reasons
test_cases = [
types.FinishReason.MAX_TOKENS,
types.FinishReason.SAFETY,
types.FinishReason.RECITATION,
types.FinishReason.OTHER,
]
for finish_reason in test_cases:
mock_responses = [
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="Hello")]
),
finish_reason=None,
)
]
),
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text=" world")]
),
finish_reason=finish_reason,
finish_message=f"Finished with {finish_reason}",
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Should have 3 responses: 2 partial and 1 final aggregated
assert len(responses) == 3
assert responses[0].partial is True
assert responses[1].partial is True
# Final response should have aggregated content with error info
final_response = responses[2]
assert final_response.content.parts[0].text == "Hello world"
assert final_response.error_code == finish_reason
assert final_response.error_message == f"Finished with {finish_reason}"
@pytest.mark.asyncio
async def test_generate_content_async_stream_with_thought_and_text_error_handling():
"""Test that aggregated content with thought and text preserves error information."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
mock_responses = [
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part(text="Think1", thought=True)]
),
finish_reason=None,
)
]
),
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="Answer")]
),
finish_reason=types.FinishReason.MAX_TOKENS,
finish_message="Maximum tokens reached",
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Should have 3 responses: 2 partial and 1 final aggregated
assert len(responses) == 3
assert responses[0].partial is True
assert responses[1].partial is True
# Final response should have aggregated content with both thought and text
final_response = responses[2]
assert len(final_response.content.parts) == 2
assert final_response.content.parts[0].text == "Think1"
assert final_response.content.parts[0].thought is True
assert final_response.content.parts[1].text == "Answer"
assert final_response.error_code == types.FinishReason.MAX_TOKENS
assert final_response.error_message == "Maximum tokens reached"
@pytest.mark.asyncio
async def test_generate_content_async_stream_no_aggregated_content_without_text():
"""Test that no aggregated content is generated when there's no accumulated text."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
# Mock response with no text content
mock_responses = [
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[
Part(
function_call=types.FunctionCall(
name="test", args={}
)
)
],
),
finish_reason=types.FinishReason.STOP,
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Should have only 1 response (no aggregated content generated)
assert len(responses) == 1
# Verify it's a function call, not text
assert responses[0].content.parts[0].function_call is not None
@pytest.mark.asyncio
async def test_generate_content_async_stream_mixed_text_function_call_text():
"""Test streaming with pattern: [text, function_call, text] to verify proper aggregation."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
# Create responses with pattern: text -> function_call -> text
mock_responses = [
# First text chunk
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="First text")]
),
finish_reason=None,
)
]
),
# Function call interrupts the text flow
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[
Part(
function_call=types.FunctionCall(
name="test_func", args={}
)
)
],
),
finish_reason=None,
)
]
),
# More text after function call
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part.from_text(text=" second text")],
),
finish_reason=types.FinishReason.STOP,
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Should have multiple responses:
# 1. Partial text "First text"
# 2. Aggregated "First text" when function call interrupts
# 3. Function call
# 4. Partial text " second text"
# 5. Final aggregated " second text"
assert len(responses) == 5
# First partial text
assert responses[0].partial is True
assert responses[0].content.parts[0].text == "First text"
# Aggregated first text (when function call interrupts)
assert responses[1].content.parts[0].text == "First text"
assert (
responses[1].partial is None
) # Aggregated responses don't have partial flag
# Function call
assert responses[2].content.parts[0].function_call is not None
assert responses[2].content.parts[0].function_call.name == "test_func"
# Second partial text
assert responses[3].partial is True
assert responses[3].content.parts[0].text == " second text"
# Final aggregated text with error info
assert responses[4].content.parts[0].text == " second text"
assert responses[4].error_code == types.FinishReason.STOP
@pytest.mark.asyncio
async def test_generate_content_async_stream_multiple_text_parts_in_single_response():
"""Test streaming with multiple text parts in a single response."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
# Create a response with multiple text parts
mock_responses = [
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[
Part.from_text(text="First part"),
Part.from_text(text=" second part"),
],
),
finish_reason=types.FinishReason.STOP,
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Should handle only the first text part in current implementation
# Note: This test documents current behavior - the implementation only
# looks at parts[0].text, so it would only process "First part"
assert len(responses) >= 1
assert responses[0].content.parts[0].text == "First part"
@pytest.mark.asyncio
async def test_generate_content_async_stream_complex_mixed_thought_text_function():
"""Test complex streaming with thought, text, and function calls mixed."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
# Complex pattern: thought -> text -> function_call -> thought -> text
mock_responses = [
# Thought
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part(text="Thinking...", thought=True)],
),
finish_reason=None,
)
]
),
# Regular text
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part.from_text(text="Here's my answer")],
),
finish_reason=None,
)
]
),
# Function call
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[
Part(
function_call=types.FunctionCall(
name="lookup", args={}
)
)
],
),
finish_reason=None,
)
]
),
# More thought
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part(text="More thinking...", thought=True)],
),
finish_reason=None,
)
]
),
# Final text
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[Part.from_text(text=" and conclusion")],
),
finish_reason=types.FinishReason.STOP,
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Should properly separate thought and regular text across aggregations
assert len(responses) > 5 # Multiple partial + aggregated responses
# Verify we get both thought and regular text parts in aggregated responses
aggregated_responses = [
r
for r in responses
if r.partial is None and r.content and len(r.content.parts) > 1
]
assert (
len(aggregated_responses) > 0
) # Should have at least one aggregated response with multiple parts
# Final aggregated response should have both thought and text
final_response = responses[-1]
assert final_response.error_code == types.FinishReason.STOP
assert len(final_response.content.parts) == 2 # thought part + text part
assert final_response.content.parts[0].thought is True
assert "More thinking..." in final_response.content.parts[0].text
assert final_response.content.parts[1].text == " and conclusion"
@pytest.mark.asyncio
async def test_generate_content_async_stream_two_separate_text_aggregations():
"""Test that [text, function_call, text] results in two separate text aggregations."""
gemini_llm = Gemini(model="gemini-1.5-flash")
llm_request = LlmRequest(
model="gemini-1.5-flash",
contents=[Content(role="user", parts=[Part.from_text(text="Hello")])],
config=types.GenerateContentConfig(
temperature=0.1,
response_modalities=[types.Modality.TEXT],
system_instruction="You are a helpful assistant",
),
)
with mock.patch.object(gemini_llm, "api_client") as mock_client:
class MockAsyncIterator:
def __init__(self, seq):
self.iter = iter(seq)
def __aiter__(self):
return self
async def __anext__(self):
try:
return next(self.iter)
except StopIteration:
raise StopAsyncIteration
# Create responses: multiple text chunks -> function_call -> multiple text chunks
mock_responses = [
# First text accumulation (multiple chunks)
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="First")]
),
finish_reason=None,
)
]
),
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text=" chunk")]
),
finish_reason=None,
)
]
),
# Function call interrupts
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model",
parts=[
Part(
function_call=types.FunctionCall(
name="divide", args={}
)
)
],
),
finish_reason=None,
)
]
),
# Second text accumulation (multiple chunks)
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text="Second")]
),
finish_reason=None,
)
]
),
types.GenerateContentResponse(
candidates=[
types.Candidate(
content=Content(
role="model", parts=[Part.from_text(text=" chunk")]
),
finish_reason=types.FinishReason.STOP,
)
]
),
]
async def mock_coro():
return MockAsyncIterator(mock_responses)
mock_client.aio.models.generate_content_stream.return_value = mock_coro()
responses = [
resp
async for resp in gemini_llm.generate_content_async(
llm_request, stream=True
)
]
# Find the aggregated text responses (non-partial, text-only)
aggregated_text_responses = [
r
for r in responses
if (
r.partial is None
and r.content
and r.content.parts
and r.content.parts[0].text
and not r.content.parts[0].function_call
)
]
# Should have two separate text aggregations: "First chunk" and "Second chunk"
assert len(aggregated_text_responses) >= 2
# First aggregation should contain "First chunk"
first_aggregation = aggregated_text_responses[0]
assert first_aggregation.content.parts[0].text == "First chunk"
# Final aggregation should contain "Second chunk" and have error info
final_aggregation = aggregated_text_responses[-1]
assert final_aggregation.content.parts[0].text == "Second chunk"
assert final_aggregation.error_code == types.FinishReason.STOP
# Verify the function call is preserved between aggregations
function_call_responses = [
r
for r in responses
if (r.content and r.content.parts and r.content.parts[0].function_call)
]
assert len(function_call_responses) == 1
assert (
function_call_responses[0].content.parts[0].function_call.name
== "divide"
)