# 6 Testing Mistakes You Should Avoid

DevFeed: [6 Testing Mistakes You Should Avoid](<https://devfeed.tech/articles/6-testing-mistakes-you-should-avoid-26198.md>)

Original publisher: [Read original article](<https://craftbettersoftware.com/p/6-testing-mistakes-you-should-avoid>)

Author: Daniel Moka

Published: 2025-04-05T05:00:42Z

Content type: tutorial

Language: en

Sources: [Craft Better Software](<https://devfeed.tech/sources/craft-better-software.md>)

Topics: [Testing](<https://devfeed.tech/topics/testing.md>), [mutation-testing](<https://devfeed.tech/topics/mutation-testing.md>), [Development](<https://devfeed.tech/topics/development.md>), [clean-code](<https://devfeed.tech/topics/clean-code.md>)

Tags: [apis](<https://devfeed.tech/tags/apis.md>), [clean-code](<https://devfeed.tech/tags/clean-code.md>), [code-testing](<https://devfeed.tech/tags/code-testing.md>), [mutation-testing](<https://devfeed.tech/tags/mutation-testing.md>), [shift-left](<https://devfeed.tech/tags/shift-left.md>), [solid-principles](<https://devfeed.tech/tags/solid-principles.md>), [testing](<https://devfeed.tech/tags/testing.md>)

## AI overview

A practical guide to avoiding common testing mistakes, including testing late, relying too heavily on code coverage, testing implementation details, and neglecting clean test code. It recommends shift-left testing, mutation testing, behavior-focused tests through public APIs, and treating tests as maintainable code.

## Source excerpt

Each with a simple fix you can apply today