As of my last update in September 2021, PHP 8.3 has not been released yet. However, I can provide you with some general guidelines to fix tests that may break when moving from PHP 8.2 (or an earlier version) to PHP 8.3. Keep in mind that these are speculative, and you should consult the official PHP documentation and release notes for PHP 8.3 for accurate information when it becomes available.
Update Dependencies: Make sure all your dependencies, including testing frameworks and libraries, are compatible with PHP 8.3. Check for updates on their respective GitHub repositories or websites.
Check for Deprecated Features: PHP 8.3 might deprecate certain functions or features that were available in earlier versions. Search for deprecated features in your codebase and replace them with recommended alternatives.
Review Error Reporting: PHP 8.3 may introduce stricter error reporting settings. Ensure that your tests handle errors and exceptions correctly. Avoid relying on outdated error suppression techniques like the @ symbol.
Type Declarations: PHP 8.3 could introduce new type declarations or modify existing ones. Review all type declarations in your tests and ensure they align with the changes in PHP 8.3.
Static Analysis: Use static analysis tools like PHPStan or Psalm to identify potential issues and bugs in your code. These tools can catch errors that might not be apparent during normal testing.
Test Case Assertions: Review all your test case assertions to ensure they remain valid in PHP 8.3. Certain edge cases or changes in internal behaviors could lead to test failures.
Testing Extensions: If your tests rely on PHP extensions, verify that these extensions are compatible with PHP 8.3. Some extensions might need updates to work correctly.
Array Syntax: PHP 8.3 might introduce changes to array syntax or array functions. Review your codebase for any array-related issues.
Regex Changes: If your tests utilize regular expressions, be aware of any regex changes in PHP 8.3. Adjust your patterns as needed.
Build a Testing Matrix: Set up a testing matrix with various PHP versions, including PHP 8.3, to run your tests. This way, you can quickly identify issues that are specific to PHP 8.3.
Always remember to test your code thoroughly after making any changes. Automated tests, continuous integration, and good test coverage are essential for detecting issues early in the development process. Additionally, keep an eye on the official PHP releases and update your code accordingly when PHP 8.3 is officially released.