Example class throws E_DEPRECATED warning in PHP 8.1

[fabacino]

What are you trying to achieve?

Running a test using the Codeception\Example class with PHP 8.1

What do you get instead?

❯ vendor/bin/codecept run
Codeception PHP Testing Framework v4.1.23
Powered by PHPUnit 9.5.10 by Sebastian Bergmann and contributors.

Fatal error: During inheritance of ArrayAccess: Uncaught PHPUnit\Framework\Exception: Return type of
Codeception\Example::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(
mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress
the notice at vendor/codeception/codeception/src/Codeception/Example.php:27

/home/www/http/vendor/composer/ClassLoader.php:571
/home/www/http/vendor/composer/ClassLoader.php:428
 in /home/www/http/vendor/codeception/codeception/src/Codeception/Example.php on line 6

Adding the #[\ReturnTypeWillChange] attribute to the offsetExists method fixes the issue. The same error appears for the other interface methods in Example as well. I can PR if appreciated.

Related issue: #6288

Details

• Codeception version: 4.1.23
• PHP Version: 8.1
• Operating System: Linux
• Installation type: Composer

[Naktibalda]

Not compatible is a bit harsh, it throws E_DEPRECATED in PHP 8.1

You must have some setting enabled that converts deprecation messages to exceptions.

Please raise PR.

[fabacino]

That's true, no offense meant. I've rephrased the title.