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What does "testability" mean in programming?
testability is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
How easily software can be verified through automated tests. High testability usually means small, focused functions with clear inputs and outputs and minimal hidden dependencies. Dependency injection and loose coupling greatly improve testability.
Example
"Dependency injection improves testability — you can swap real services for mocks in unit tests."
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