Testing · interview question
How would you explain a significant advantage of using mocks at the boundary of a system, rather than the internals in an interview?
Multiple choiceMediumchapter-10-curatedpremiumtestingmocking-with-mockito
Answer and explanation
Correct answer
C. It leads to less fragile tests.
Why
Mocking at the boundaries of a system rather than internals results in tests that are more resilient to changes in implementation details. This approach reduces test fragility and maintenance overhead, as only the interactions with external dependencies are mocked.
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