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Write good tests and define integration tests

FidelitySoftware Engineer · Online Assessment
MediumSoftware EngineerOnline AssessmentSoftware Engineering Fundamentals

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Write good tests and define integration tests evaluates engineering fundamentals, trade-offs, examples, pitfalls, and operational implications in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

How do you write a good test, and what makes a bad test? Define unit, integration, and end-to-end tests; explain the purpose and scope of integration testing, isolation vs realism, test fixtures, determinism, and common causes of flakiness, with examples.