Code Smell 76 - Generic Assertions

TL;DR: Test Assertions should be precise. Not too Vague and not too specific. There is no silver bullet.

Problems

False Negatives

Lack of Trust

Solutions

Check the right case

Assert for a functional case.

Don't test implementation.

Sample Code

Wrong

Right

Detection

With Mutation Testing techniques we can find these errors on our tests.

Tags

Testing

Conclusion

We should use development techniques like TDD that request concrete business cases and make concrete assertions based on our domain.

Relations

Code Smell 30 - Mocking Business

Maxi Contieri ・ Nov 21 '20 ・ 1 min read

#testing #webdev #programming #tdd

Code Smell 52 - Fragile Tests

Maxi Contieri ・ Jan 4 ・ 1 min read

#codesmell #tutorial #codenewbie #webdev

More info

Test Driven Development

The Only Design Principle

Mutation Testing

Credits

This smell was inspired by Mario Cervera and used with his permission.

Photo by Fleur on Unsplash

A program that produces incorrect results twice as fast is infinitely slower.

Software Engineering Great Quotes

Maxi Contieri ・ Dec 28 '20 ・ 13 min read

#codenewbie #programming #quotes #software

This article is part of the CodeSmell Series.

How to Find the Stinky parts of your Code

Maxi Contieri ・ May 21 ・ 4 min read

#codenewbie #tutorial #codequality #beginners