Code Smell 30 — Mocking Business

Mocking is a great aid when testing behavior. Like with many other tools, we are abusing them.

Photo by Syed Ahmad on Unsplash

Problems

  • False sense of security.
  • Parallel/Duplicated objects (Real and Mocks)
  • Maintainability

Solutions

2. Remove mock if its interface has too much behavior.

Sample Code

Wrong

Right

Detection

Exceptions

Tags

Conclusion

Imagine a play in which each actor, instead of rehearsing with other actors, had to interact with 25 scriptwriters. The actors would never rehearse together. How would the result of the play be?

Also Known as

More info

The pesticide paradox. Every method you use to prevent or find bugs leaves a residue of subtler bugs against which those methods are ineffective.

Boris Beizer

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Maximiliano Contieri

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I’m senior software engineer specialized in declarative designs. S.O.L.I.D. and agile methodologies fan.

Dev Genius

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