To set up PHPUnit for continuous integration (CI) and automated testing, follow these steps:
Install PHPUnit: PHPUnit is a testing framework for PHP. You can install it using Composer by running the following command in your project directory: composer require --dev phpunit/phpunit.
Create a PHPUnit configuration file: Create a phpunit.xml file in your project's root directory. This file will contain the configuration settings for PHPUnit. You can start with a basic configuration and customize it as per your project requirements.
Write test cases: Write PHPUnit test cases for your code. Test cases should be located in separate files under a directory (typically named tests) in your project directory. Each test case file should have the suffix Test.php.
Set up CI and automation tool: Choose a CI and automation tool of your choice. Popular options include Jenkins, Travis CI, GitLab CI/CD, and CircleCI. Set up the tool by following their documentation and configure it to run PHPUnit.
Configure CI pipeline: Set up a CI pipeline in your chosen tool that triggers on every commit or pull request. Configure the pipeline to run PHPUnit using the phpunit.xml configuration file and the test files located in the tests directory.
Run PHPUnit tests during CI pipeline: Configure the CI pipeline to execute the PHPUnit command to run the tests. For example, the command might be php vendor/phpunit/phpunit/phpunit --configuration phpunit.xml.
Analyze test results: Configure the CI tool to analyze the test results and provide feedback on test failures and coverage. You can integrate code coverage tools like PHPUnit's --coverage-<format> flags and code quality tools like SonarQube.
Automate the process: It's essential to automate the CI pipeline and test execution. This ensures that tests are run consistently and automatically on every code change. Automated tests allow for faster feedback and reduce the chances of introducing regressions into the codebase.
Remember, continuous integration and automated testing require a good testing strategy, including writing comprehensive and meaningful tests as well as ensuring code coverage.