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TestingIntermediate

What is Mocking?

Creating fake versions of external services or components during testing so tests run reliably and quickly.

Why It Matters

Mocking lets you test your code without depending on real databases, APIs, or other services that might be slow or unavailable.

Real-World Example

Using a mock payment API in tests so you can verify your checkout logic without making real charges.

“Understanding terms like Mocking matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”

Callum Holt, Founder, 13Labs

From definition to deployment

Knowing the term is step one. Using it in something real is the rest.

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Related Terms

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Unit Test

A test that checks if a small piece of code works correctly in isolation

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Integration Test

A test that checks if multiple parts of your system work correctly together

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Testing

Verifying that your code works correctly through automated checks

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E2E Test

End-to-end test that simulates a real user completing tasks in your application

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Test-Driven Development (TDD)

A development approach where you write tests before writing the actual code.

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Behaviour-Driven Development (BDD)

A development approach that describes software behaviour in plain English scenarios that serve as both documentation...