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chore: Add unit tests for contents.py
PiperOrigin-RevId: 775713101
This commit is contained in:
Xiang (Sean) Zhou
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Copybara-Service
Copybara-Service
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# Copyright 2025 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from google.adk.agents import Agent
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from google.adk.events.event import Event
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from google.adk.flows.llm_flows import contents
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from google.adk.flows.llm_flows.contents import _convert_foreign_event
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from google.adk.flows.llm_flows.contents import _get_contents
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from google.adk.flows.llm_flows.contents import _merge_function_response_events
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from google.adk.flows.llm_flows.contents import _rearrange_events_for_async_function_responses_in_history
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from google.adk.flows.llm_flows.contents import _rearrange_events_for_latest_function_response
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from google.adk.models import LlmRequest
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from google.genai import types
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import pytest
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from ... import testing_utils
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@pytest.mark.asyncio
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async def test_content_processor_no_contents():
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"""Test ContentLlmRequestProcessor when include_contents is 'none'."""
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agent = Agent(model="gemini-1.5-flash", name="agent", include_contents="none")
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llm_request = LlmRequest(model="gemini-1.5-flash")
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invocation_context = await testing_utils.create_invocation_context(
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agent=agent
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)
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# Collect events from async generator
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events = []
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async for event in contents.request_processor.run_async(
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invocation_context, llm_request
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):
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events.append(event)
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# Should not yield any events
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assert len(events) == 0
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# Contents should not be set when include_contents is 'none'
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assert llm_request.contents == []
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@pytest.mark.asyncio
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async def test_content_processor_with_contents():
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"""Test ContentLlmRequestProcessor when include_contents is not 'none'."""
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agent = Agent(model="gemini-1.5-flash", name="agent")
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llm_request = LlmRequest(model="gemini-1.5-flash")
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invocation_context = await testing_utils.create_invocation_context(
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agent=agent
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)
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# Add some test events to the session
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test_event = Event(
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invocation_id="test_inv",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part.from_text(text="Hello")]
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),
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)
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invocation_context.session.events = [test_event]
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# Collect events from async generator
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events = []
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async for event in contents.request_processor.run_async(
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invocation_context, llm_request
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):
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events.append(event)
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# Should not yield any events (processor doesn't emit events, just modifies request)
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assert len(events) == 0
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# Contents should be set
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assert llm_request.contents is not None
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assert len(llm_request.contents) == 1
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assert llm_request.contents[0].role == "user"
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assert llm_request.contents[0].parts[0].text == "Hello"
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@pytest.mark.asyncio
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async def test_content_processor_non_llm_agent():
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"""Test ContentLlmRequestProcessor with non-LLM agent."""
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from google.adk.agents.base_agent import BaseAgent
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# Create a base agent (not LLM agent)
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agent = BaseAgent(name="base_agent")
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llm_request = LlmRequest(model="gemini-1.5-flash")
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invocation_context = await testing_utils.create_invocation_context(
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agent=agent
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)
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# Collect events from async generator
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events = []
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async for event in contents.request_processor.run_async(
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invocation_context, llm_request
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):
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events.append(event)
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# Should not yield any events and not modify request
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assert len(events) == 0
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assert llm_request.contents == []
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def test_get_contents_empty_events():
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"""Test _get_contents with empty events list."""
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contents_result = _get_contents(None, [], "test_agent")
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assert contents_result == []
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def test_get_contents_with_events():
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"""Test _get_contents with valid events."""
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test_event = Event(
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invocation_id="test_inv",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part.from_text(text="Hello")]
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),
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)
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contents_result = _get_contents(None, [test_event], "test_agent")
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assert len(contents_result) == 1
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assert contents_result[0].role == "user"
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assert contents_result[0].parts[0].text == "Hello"
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def test_get_contents_filters_empty_events():
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"""Test _get_contents filters out events with empty content."""
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# Event with empty text
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empty_event = Event(
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invocation_id="test_inv",
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author="user",
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content=types.Content(role="user", parts=[types.Part.from_text(text="")]),
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)
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# Event without content
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no_content_event = Event(
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invocation_id="test_inv",
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author="user",
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)
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# Valid event
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valid_event = Event(
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invocation_id="test_inv",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part.from_text(text="Hello")]
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),
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)
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contents_result = _get_contents(
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None, [empty_event, no_content_event, valid_event], "test_agent"
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)
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assert len(contents_result) == 1
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assert contents_result[0].role == "user"
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assert contents_result[0].parts[0].text == "Hello"
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def test_convert_foreign_event():
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"""Test _convert_foreign_event function."""
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agent_event = Event(
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invocation_id="test_inv",
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author="agent1",
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content=types.Content(
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role="model", parts=[types.Part.from_text(text="Agent response")]
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),
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)
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converted_event = _convert_foreign_event(agent_event)
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assert converted_event.author == "user"
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assert converted_event.content.role == "user"
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assert len(converted_event.content.parts) == 2
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assert converted_event.content.parts[0].text == "For context:"
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assert (
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"[agent1] said: Agent response" in converted_event.content.parts[1].text
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)
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def test_convert_event_with_function_call():
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"""Test _convert_foreign_event with function call."""
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function_call = types.FunctionCall(
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id="func_123", name="test_function", args={"param": "value"}
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)
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agent_event = Event(
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invocation_id="test_inv",
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author="agent1",
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content=types.Content(
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role="model", parts=[types.Part(function_call=function_call)]
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),
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)
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converted_event = _convert_foreign_event(agent_event)
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assert converted_event.author == "user"
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assert converted_event.content.role == "user"
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assert len(converted_event.content.parts) == 2
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assert converted_event.content.parts[0].text == "For context:"
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assert (
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"[agent1] called tool `test_function`"
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in converted_event.content.parts[1].text
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)
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assert "{'param': 'value'}" in converted_event.content.parts[1].text
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def test_convert_event_with_function_response():
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"""Test _convert_foreign_event with function response."""
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function_response = types.FunctionResponse(
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id="func_123", name="test_function", response={"result": "success"}
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)
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agent_event = Event(
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invocation_id="test_inv",
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author="agent1",
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content=types.Content(
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role="user", parts=[types.Part(function_response=function_response)]
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),
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)
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converted_event = _convert_foreign_event(agent_event)
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assert converted_event.author == "user"
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assert converted_event.content.role == "user"
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assert len(converted_event.content.parts) == 2
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assert converted_event.content.parts[0].text == "For context:"
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assert (
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"[agent1] `test_function` tool returned result:"
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in converted_event.content.parts[1].text
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)
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assert "{'result': 'success'}" in converted_event.content.parts[1].text
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def test_merge_function_response_events():
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"""Test _merge_function_response_events function."""
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# Create initial function response event
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function_response1 = types.FunctionResponse(
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id="func_123", name="test_function", response={"status": "pending"}
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)
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initial_event = Event(
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invocation_id="test_inv",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part(function_response=function_response1)]
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),
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)
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# Create final function response event
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function_response2 = types.FunctionResponse(
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id="func_123", name="test_function", response={"result": "success"}
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)
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final_event = Event(
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invocation_id="test_inv2",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part(function_response=function_response2)]
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),
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)
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merged_event = _merge_function_response_events([initial_event, final_event])
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assert (
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merged_event.invocation_id == "test_inv"
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) # Should keep initial event ID
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assert len(merged_event.content.parts) == 1
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# The first part should be replaced with the final response
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assert merged_event.content.parts[0].function_response.response == {
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"result": "success"
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}
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def test_rearrange_events_for_async_function_responses():
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"""Test _rearrange_events_for_async_function_responses_in_history function."""
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# Create function call event
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function_call = types.FunctionCall(
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id="func_123", name="test_function", args={"param": "value"}
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)
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call_event = Event(
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invocation_id="test_inv1",
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author="agent",
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content=types.Content(
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role="model", parts=[types.Part(function_call=function_call)]
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),
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)
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# Create function response event
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function_response = types.FunctionResponse(
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id="func_123", name="test_function", response={"result": "success"}
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)
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response_event = Event(
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invocation_id="test_inv2",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part(function_response=function_response)]
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),
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)
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# Test rearrangement
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events = [call_event, response_event]
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rearranged = _rearrange_events_for_async_function_responses_in_history(events)
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# Should have both events in correct order
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assert len(rearranged) == 2
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assert rearranged[0] == call_event
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assert rearranged[1] == response_event
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def test_rearrange_events_for_latest_function_response():
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"""Test _rearrange_events_for_latest_function_response function."""
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# Create function call event
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function_call = types.FunctionCall(
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id="func_123", name="test_function", args={"param": "value"}
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)
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call_event = Event(
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invocation_id="test_inv1",
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author="agent",
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content=types.Content(
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role="model", parts=[types.Part(function_call=function_call)]
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),
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)
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# Create intermediate event
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intermediate_event = Event(
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invocation_id="test_inv2",
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author="agent",
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content=types.Content(
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role="model", parts=[types.Part.from_text(text="Processing...")]
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),
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)
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# Create function response event
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function_response = types.FunctionResponse(
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id="func_123", name="test_function", response={"result": "success"}
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)
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response_event = Event(
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invocation_id="test_inv3",
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author="user",
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content=types.Content(
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role="user", parts=[types.Part(function_response=function_response)]
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),
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)
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# Test with matching function call and response
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events = [call_event, intermediate_event, response_event]
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rearranged = _rearrange_events_for_latest_function_response(events)
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# Should remove intermediate events and merge responses
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assert len(rearranged) == 2
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assert rearranged[0] == call_event
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