Which of the following is the correct way to run a regression test on a Langchain chain named my_chain with input {"text": "Hello"} and expected output {"result": "Hi"}?

easy📝 Syntax Q12 of 15

LangChain - Evaluation and Testing

Which of the following is the correct way to run a regression test on a Langchain chain named my_chain with input {"text": "Hello"} and expected output {"result": "Hi"}?

Aassert my_chain.invoke({"text": "Hello"}) == {"result": "Hi"}

Bmy_chain.test({"text": "Hello"}, {"result": "Hi"})

Cmy_chain.run({"text": "Hello"}) == {"result": "Hi"}

Dmy_chain.regression_test({"text": "Hello"}, {"result": "Hi"})

Step-by-Step Solution

Solution:

Step 1: Identify correct method to run chain and compare output
Langchain chains use invoke or run to get output; to test, use assert to compare.
Step 2: Check options for syntax correctness
assert my_chain.invoke({"text": "Hello"}) == {"result": "Hi"} uses assert with invoke and compares to expected output correctly.
Final Answer:
assert my_chain.invoke({"text": "Hello"}) == {"result": "Hi"} -> Option A
Quick Check:
Use assert with invoke for regression test [OK]

Quick Trick: Use assert with invoke to compare outputs in regression tests [OK]

Common Mistakes:

MISTAKES

Using non-existent methods like regression_test
Comparing outputs without assert
Confusing run and test methods

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Which of the following is the correct way to run a regression test on a Langchain chain named my_chain with input {"text": "Hello"} and expected output {"result": "Hi"}?

Step 1: Identify correct method to run chain and compare output

Step 2: Check options for syntax correctness

Final Answer:

Quick Check:

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