• Introduction
  • TDD Workflow
  • TDD Libraries
  • How to Run
• Factories
• Why Not Latest PHPUnit
• Woocommerce Developer Blog
• Wordpress Writing PHP Tests
• Get Started
• Mocking

Writing test cases for your code ensures code quality, proper implementation of business logic, and easy refactoring. It is an essential part of the development process.

1. Write a Test: Define the desired functionality.
2. Run the Test: Ensure it fails (since the functionality is not yet implemented).
3. Write Code: Implement the minimum code required to pass the test.
4. Run Tests: Verify that all tests pass.
5. Refactor: Improve the code structure while ensuring that tests still pass.
6. Repeat: Continue this process for each new feature.

The following libraries are used for TDD. All methods and features of these libraries are available for writing test cases:

• PHPUnit
• Mockery
• Brain Monkey: A unit test utility for PHP, specifically for mocking and testing WordPress code.

You can run the test cases from the plugin's root directory terminal using one of the following methods:

Option 1:

Run tests using the ./vendor/bin/phpunit command:

./vendor/bin/phpunit
./vendor/bin/phpunit --filter {your-filter-key}

Option 2:

Use the custom commands test and test-f added to the composer script:

composer test
composer test-f {your-filter-key}

We can only use PHPUnit versions that are supported by WP PHPUnit.