Mock the Clock

Verb Phrase · Slang & Abbreviations

Definitions

  1. To replace real time with controlled test time so time-dependent logic becomes predictable and testable. In engineering slang, mocking the clock is one of the first signs a team is taking flaky time-based behavior seriously.

    In plain English: To fake or control time in tests instead of using real time.

    Example: "The scheduler tests stopped flaking only after they mocked the clock instead of sleeping and hoping wall time behaved nicely in CI."

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