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Testing · interview question

A bug appears around api contract testing. What is the strongest first debugging move?

Multiple choiceHardchapter-13-curatedpremiumtestingapi-contract-testing
python
from fastapi.testclient import TestClient

client = TestClient(app)
response = client.get("/orders/ORD-1")
assert response.status_code == 200
Choose one answer
Answer and explanation

Correct answer

B. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.

Why

That approach is reliable because it creates evidence. Assuming the framework will do the right thing without verification leaves the contract under-proven.

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