test_tracer_chain_run() — langchain Function Reference

Architecture documentation for the test_tracer_chain_run() function in test_base_tracer.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ test_tracer_chain_run() — langchain Function Reference

Dependency Diagram

graph TD
  1a81edb0_70ad_0044_f8c5_d71feffd4e6c["test_tracer_chain_run()"]
  013f89c1_4436_b008_1552_7a3ea97dace9["test_base_tracer.py"]
  1a81edb0_70ad_0044_f8c5_d71feffd4e6c -->|defined in| 013f89c1_4436_b008_1552_7a3ea97dace9
  style 1a81edb0_70ad_0044_f8c5_d71feffd4e6c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/tracers/test_base_tracer.py lines 164–189

def test_tracer_chain_run() -> None:
    """Test tracer on a Chain run."""
    uuid = uuid4()
    compare_run = Run(
        id=str(uuid),
        name="chain",
        start_time=datetime.now(timezone.utc),
        end_time=datetime.now(timezone.utc),
        events=[
            {"name": "start", "time": datetime.now(timezone.utc)},
            {"name": "end", "time": datetime.now(timezone.utc)},
        ],
        extra={},
        serialized={"name": "chain"},
        inputs={},
        outputs={},
        error=None,
        run_type="chain",
        trace_id=uuid,
        dotted_order=f"20230101T000000000000Z{uuid}",
    )
    tracer = FakeTracer()

    tracer.on_chain_start(serialized={"name": "chain"}, inputs={}, run_id=uuid)
    tracer.on_chain_end(outputs={}, run_id=uuid)
    assert tracer.runs == [compare_run]