# How I use Mutation Testing to Drive Good Test Case Coverage

DevFeed: [How I use Mutation Testing to Drive Good Test Case Coverage](<https://devfeed.tech/articles/how-i-use-mutation-testing-to-drive-good-test-case-coverage-24832.md>)

Original publisher: [Read original article](<https://akjaw.com/using-mutation-testing-for-good-test-coverage/>)

Author: Aleksander Jaworski

Published: 2023-12-05T15:05:18Z

Content type: tutorial

Language: en

Sources: [AKJAW](<https://devfeed.tech/sources/akjaw.md>)

Topics: [mutation-testing](<https://devfeed.tech/topics/mutation-testing.md>), [Test coverage](<https://devfeed.tech/topics/coverage.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [Software Engineering](<https://devfeed.tech/topics/software-engineering.md>)

Tags: [automated](<https://devfeed.tech/tags/automated.md>), [bugs](<https://devfeed.tech/tags/bugs.md>), [development](<https://devfeed.tech/tags/development.md>), [mutation-testing](<https://devfeed.tech/tags/mutation-testing.md>), [software](<https://devfeed.tech/tags/software.md>), [testing](<https://devfeed.tech/tags/testing.md>), [tests](<https://devfeed.tech/tags/tests.md>)

## AI overview

The article explains how mutation testing evaluates test suites by changing production code logic. If tests still pass after a mutation, the test suite may be missing a case that detects the change.

## Source excerpt

Automated testing is important for efficient software development, catching bugs within minutes and saving valuable developer time. Mutation Testing validates test suites by altering production code logic. When tests pass despite code mutations, it signals missing test cases.