Multiple choice

A mock is used to

  1. Provide stand-in objects for dependencies to isolate tested code.

  2. Modify the tested class state at runtime.

  3. Assert values to ensure they meet expectations.

  4. Fake unit tests so that they pass regardless of code stability.

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A Correct answer
Explanation

In unit testing, mock objects simulate the behavior of complex, real dependencies (such as databases or external APIs). This allows developers to isolate the code being tested and verify its behavior independently of external factors.

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