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test_event_streaming_with_tools() — langchain Function Reference

Architecture documentation for the test_event_streaming_with_tools() function in test_runnable_events_v1.py from the langchain codebase.

Function python LangChainCore Runnables calls 2

Entity Profile

Dependency Diagram

graph TD
  866e59ec_9b04_395f_5ae3_1a283a31e020["test_event_streaming_with_tools()"]
  8ff41f3c_f250_f8de_8094_4f24860a10e0["test_runnable_events_v1.py"]
  866e59ec_9b04_395f_5ae3_1a283a31e020 -->|defined in| 8ff41f3c_f250_f8de_8094_4f24860a10e0
  aac0453e_34cd_4dce_c7fa_f176ab20140b["_collect_events()"]
  866e59ec_9b04_395f_5ae3_1a283a31e020 -->|calls| aac0453e_34cd_4dce_c7fa_f176ab20140b
  6ebe7fde_6e8f_dae5_d42f_9cea181617f5["_assert_events_equal_allow_superset_metadata()"]
  866e59ec_9b04_395f_5ae3_1a283a31e020 -->|calls| 6ebe7fde_6e8f_dae5_d42f_9cea181617f5
  style 866e59ec_9b04_395f_5ae3_1a283a31e020 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/runnables/test_runnable_events_v1.py lines 1064–1228

async def test_event_streaming_with_tools() -> None:
    """Test streaming events with different tool definitions."""

    @tool
    def parameterless() -> str:
        """A tool that does nothing."""
        return "hello"

    @tool
    def with_callbacks(callbacks: Callbacks) -> str:
        """A tool that does nothing."""
        _ = callbacks
        return "world"

    @tool
    def with_parameters(x: int, y: str) -> dict:
        """A tool that does nothing."""
        return {"x": x, "y": y}

    @tool
    def with_parameters_and_callbacks(x: int, y: str, callbacks: Callbacks) -> dict:
        """A tool that does nothing."""
        _ = callbacks
        return {"x": x, "y": y}

    # type ignores below because the tools don't appear to be runnables to type checkers
    # we can remove as soon as that's fixed
    events = await _collect_events(parameterless.astream_events({}, version="v1"))
    _assert_events_equal_allow_superset_metadata(
        events,
        [
            {
                "data": {"input": {}},
                "event": "on_tool_start",
                "metadata": {},
                "name": "parameterless",
                "run_id": "",
                "parent_ids": [],
                "tags": [],
            },
            {
                "data": {"chunk": "hello"},
                "event": "on_tool_stream",
                "metadata": {},
                "name": "parameterless",
                "run_id": "",
                "parent_ids": [],
                "tags": [],
            },
            {
                "data": {"output": "hello"},
                "event": "on_tool_end",
                "metadata": {},
                "name": "parameterless",
                "run_id": "",
                "parent_ids": [],
                "tags": [],
            },
        ],
    )

    events = await _collect_events(with_callbacks.astream_events({}, version="v1"))
    _assert_events_equal_allow_superset_metadata(
        events,
        [
            {
                "data": {"input": {}},
                "event": "on_tool_start",
                "metadata": {},
                "name": "with_callbacks",
                "run_id": "",
                "parent_ids": [],
                "tags": [],
            },
            {
                "data": {"chunk": "world"},
                "event": "on_tool_stream",
                "metadata": {},
                "name": "with_callbacks",
                "run_id": "",
                "parent_ids": [],

Domain

Subdomains

Defined In

Calls

Source

Frequently Asked Questions

What does test_event_streaming_with_tools() do?
test_event_streaming_with_tools() is a function in the langchain codebase, defined in libs/core/tests/unit_tests/runnables/test_runnable_events_v1.py.
Where is test_event_streaming_with_tools() defined?
test_event_streaming_with_tools() is defined in libs/core/tests/unit_tests/runnables/test_runnable_events_v1.py at line 1064.
What does test_event_streaming_with_tools() call?
test_event_streaming_with_tools() calls 2 function(s): _assert_events_equal_allow_superset_metadata, _collect_events.

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