mirror of
https://github.com/hwchase17/langchain
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41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
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"""Test LLM Math functionality."""
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import pytest
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from langchain.chains.llm_math.base import LLMMathChain
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from langchain.chains.llm_math.prompt import _PROMPT_TEMPLATE
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from tests.unit_tests.llms.fake_llm import FakeLLM
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@pytest.fixture
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def fake_llm_math_chain() -> LLMMathChain:
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"""Fake LLM Math chain for testing."""
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complex_question = _PROMPT_TEMPLATE.format(question="What is the square root of 2?")
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queries = {
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_PROMPT_TEMPLATE.format(question="What is 1 plus 1?"): "Answer: 2",
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complex_question: "```python\nprint(2**.5)\n```",
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_PROMPT_TEMPLATE.format(question="foo"): "foo",
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}
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fake_llm = FakeLLM(queries=queries)
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return LLMMathChain(llm=fake_llm, input_key="q", output_key="a")
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def test_simple_question(fake_llm_math_chain: LLMMathChain) -> None:
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"""Test simple question that should not need python."""
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question = "What is 1 plus 1?"
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output = fake_llm_math_chain.run(question)
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assert output == "Answer: 2"
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def test_complex_question(fake_llm_math_chain: LLMMathChain) -> None:
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"""Test complex question that should need python."""
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question = "What is the square root of 2?"
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output = fake_llm_math_chain.run(question)
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assert output == f"Answer: {2**.5}\n"
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def test_error(fake_llm_math_chain: LLMMathChain) -> None:
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"""Test question that raises error."""
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with pytest.raises(ValueError):
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fake_llm_math_chain.run("foo")
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