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test_subtract_usage_both_none() — langchain Function Reference

Architecture documentation for the test_subtract_usage_both_none() function in test_ai.py from the langchain codebase.

Function python LangChainCore ApiManagement

Entity Profile

Dependency Diagram

graph TD
  fe27a4f5_6b85_17b0_eca7_c7938bd14fa2["test_subtract_usage_both_none()"]
  f148f3ce_73bd_627d_a979_33d23ebac843["test_ai.py"]
  fe27a4f5_6b85_17b0_eca7_c7938bd14fa2 -->|defined in| f148f3ce_73bd_627d_a979_33d23ebac843
  style fe27a4f5_6b85_17b0_eca7_c7938bd14fa2 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/messages/test_ai.py lines 146–148

def test_subtract_usage_both_none() -> None:
    result = subtract_usage(None, None)
    assert result == UsageMetadata(input_tokens=0, output_tokens=0, total_tokens=0)

Domain

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Defined In

Source

Frequently Asked Questions

What does test_subtract_usage_both_none() do?
test_subtract_usage_both_none() is a function in the langchain codebase, defined in libs/core/tests/unit_tests/messages/test_ai.py.
Where is test_subtract_usage_both_none() defined?
test_subtract_usage_both_none() is defined in libs/core/tests/unit_tests/messages/test_ai.py at line 146.

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