(Added) Add Mutation Testing to the Project

MarjovanLier commented 4 months ago

User description

Summary

This Merge Request (MR) introduces mutation testing using the Infection library to the project. Mutation testing is a technique that modifies the source code in small ways and verifies that the tests fail as expected, ensuring the tests are practical and the code is robust.

Context and Background

Mutation testing is a powerful tool for improving code quality and test coverage. By injecting minor faults (mutations) into the code and ensuring the tests fail as expected, developers can identify blind spots in their test suite and write better tests. This proactive approach can help catch edge cases, improve code robustness, and increase confidence in the codebase.

Problem Description

While the project has a comprehensive test suite, there needs to be a mechanism to evaluate these tests' effectiveness systematically. Traditional code coverage metrics provide a quantitative measure of how much code is executed by tests but do not assess the qualitative aspect of whether the tests are adequately exercising the code under various scenarios.

Solution Description

The Infection Library has been integrated into the project to address this issue. Infection is a PHP-based mutation testing framework that generates mutants (modified versions) of the source code and runs the test suite against these mutants. If a mutant survives (i.e., the tests pass), it indicates a potential gap in the test suite, which can be addressed by writing additional tests or refactoring the code.

List of Changes

Added:
- composer.json: Introduced Infection as a development dependency and added a new script test:infection to run the mutation testing command.
- infection.json5: Configuration file for Infection, specifying the source directories, mutators, test framework, and log output.
- .github/workflows/php.yml: Uncommented the step for running mutation testing as part of the GitHub Actions workflow, conditional on the success of PHPUnit tests.

Type

enhancement, configuration changes

Description

Adds Infection as a development dependency for mutation testing.
Enables mutation testing step in the GitHub Actions workflow to improve code robustness checks.
Introduces a new test:infection script in composer.json for running mutation testing.
Creates an infection.json5 configuration file specifying the setup for mutation testing.

Changes walkthrough

Relevant files

Configuration changes

php.yml `Enable Mutation Testing in GitHub Actions Workflow` .github/workflows/php.yml Uncomments and enables the mutation testing step with Infection in the GitHub Actions workflow.	+6/-6
infection.json5 `Configure Infection for Mutation Testing` infection.json5 Creates a new configuration file for Infection specifying source directories, mutators, test framework, and log output.	+15/-0

Enhancement

composer.json

Add Infection Dependency and Test Script

composer.json

Adds infection/infection as a development dependency.

Introduces a new script test:infection for running mutation testing.

Organizes test-related commands under a new tests script for
streamlined execution.

+11/-0

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Summary by CodeRabbit

Chores
- Improved CI workflow by re-enabling mutation testing with Infection for PHP.
- Enhanced developer tools with the addition of mutation testing using infection/infection.
- Configured Infection mutation testing settings for better quality assurance.

coderabbitai[bot] commented 4 months ago

Walkthrough

## Walkthrough The project has revamped its testing strategy by incorporating mutation testing using Infection. This entails re-enabling mutation testing steps in the workflow, adding Infection as a dev dependency, and configuring it for the project. These adjustments are geared towards enhancing code quality and ensuring the resilience of the codebase through the evaluation of the test suite's ability to detect intentionally injected errors. ## Changes | File(s) | Change Summary | |------------------------------|---------------------------------------------------------------------------------| | `.github/workflows/php.yml` | Re-enabled mutation testing step with Infection, enhanced clarity in formatting and comments. | | `composer.json` | Added `infection/infection` as a dev dependency, introduced `test:infection` script, and updated test script sequence. | | `infection.json5` | Configured Infection for mutation testing in a PHP project, defined source directories, mutators, test framework (PHPUnit), and output logs. |

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sweep-ai[bot] commented 4 months ago

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codiumai-pr-agent-pro[bot] commented 4 months ago

PR Description updated to latest commit (https://github.com/MarjovanLier/XhprofTrace/commit/0867125399ea3aeb258d60699acabbb2b72a54a6)

[x] Copy walkthrough table to "Files Changed" Tab

codiumai-pr-agent-pro[bot] commented 4 months ago

Changelog updates:

2024-03-05

Added

Introduced mutation testing using the Infection library to improve code quality and test coverage.
Added a new script test:infection in composer.json for running mutation testing.
Updated the GitHub Actions workflow to include a step for mutation testing.

to commit the new content to the CHANGELOG.md file, please type: '/update_changelog --pr_update_changelog.push_changelog_changes=true'

codiumai-pr-agent-pro[bot] commented 4 months ago

PR Code Suggestions

Category	Suggestions
Performance	Add caching for Composer dependencies to improve build times. ___ Consider adding a step to cache the Composer dependencies to speed up the installation process. This can significantly reduce the build time, especially for projects with many dependencies. [.github/workflows/php.yml [106]](https://github.com/MarjovanLier/XhprofTrace/pull/18/files#diff-a73bb6555480a5ee79ae276a3f5d71a08fa316e09a4a8da7b643cf1e92c97df9R106-R106) ```diff +- name: Cache Composer dependencies + uses: actions/cache@v2 + with: + path: vendor + key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }} + restore-keys: \| + ${{ runner.os }}-composer- - name: Run Mutation Testing id: infection if: steps.phpunit.outcome == 'success' run: composer test:infection ```
Best practice	Use a more constrained version range for the `infection/infection` package. ___ It's recommended to use version constraints for the `infection/infection` package to ensure compatibility and prevent potential conflicts with other packages. Instead of using `>=0.27.10`, consider specifying a more constrained version range. [composer.json [50]](https://github.com/MarjovanLier/XhprofTrace/pull/18/files#diff-d2ab9925cad7eac58e0ff4cc0d251a937ecf49e4b6bf57f8b95aab76648a9d34R50-R50) ```diff -"infection/infection": ">=0.27.10", +"infection/infection": "^0.27.10", ```
Maintainability	Remove duplicate script entry in the `tests` array. ___ The `@test:code-style` script is listed twice in the `tests` array. Remove the duplicate entry to clean up the script definitions. [composer.json [64-70]](https://github.com/MarjovanLier/XhprofTrace/pull/18/files#diff-d2ab9925cad7eac58e0ff4cc0d251a937ecf49e4b6bf57f8b95aab76648a9d34R64-R70) ```diff "@test:vulnerabilities-check", "@test:lint", "@test:code-style", "@test:phpmd", -"@test:infection", -"@test:code-style" +"@test:infection" ```
Enhancement	Specify a higher timeout for mutation tests to accommodate longer test executions. ___ To improve the mutation testing process, consider specifying a higher timeout for the tests. This can be particularly useful for larger projects where tests might take longer to execute. [infection.json5 [11-13]](https://github.com/MarjovanLier/XhprofTrace/pull/18/files#diff-292983cb7dbbafbc6186acf148a6cfe6a291cbf31046ae43c66d825869feba5eR11-R13) ```diff "testFramework":"phpunit", +"timeout": 15, "logs": { "html": "reports/infection.html" } ```
Enhancement	Enable JSON log output for detailed mutation testing analysis. ___ For a more detailed mutation testing report, consider enabling the JSON log output in addition to the HTML report. This can be useful for automated parsing and analysis of the mutation testing results. [infection.json5 [13]](https://github.com/MarjovanLier/XhprofTrace/pull/18/files#diff-292983cb7dbbafbc6186acf148a6cfe6a291cbf31046ae43c66d825869feba5eR13-R13) ```diff "logs": { - "html": "reports/infection.html" + "html": "reports/infection.html", + "json": "reports/infection.json" } ```

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codiumai-pr-agent-pro[bot] commented 4 months ago

Auto-approved PR