Prefer modern PHPUnit attributes over PHPDoc annotations for improved type safety, IDE support, and code readability in tests. Replace legacy annotation-style test decorators with their attribute counterparts: - Use `#[DataProvider]` for test data organization: ```php #[DataProvider('provideStrSanitizeTestStrings')] public function testSanitize(?string $subject, ?string $expected, ?HtmlSanitizerConfig $config) { $this->assertSame($expected, Str::sanitize($subject, $config)); } public static function provideStrSanitizeTestStrings() { return [ 'non-empty string is returned as is' => ['Hello', 'Hello', null], 'XSS attack is sanitized' => ['', '', null], // more test cases... ]; } ``` - Use `#[RequiresPhp('8.4.0')]` or similar attributes instead of manual version checks: ```php // Instead of: if (PHP_VERSION_ID < 80400) { $this->markTestSkipped('Property Hooks are not available to test in PHP...'); } // Use: #[RequiresPhp('8.4.0')] class DatabaseEloquentWithPropertyHooksTest extends TestCase { // Test methods... } ``` - For simpler test data cases, consider `#[TestWith]`: ```php #[TestWith(['Hello', 'Hello', null])] #[TestWith([123, '123', null])] #[TestWith([null, null, null])] public function testSanitize(?string $subject, ?string $expected, ?HtmlSanitizerConfig $config) { $this->assertSame($expected, Str::sanitize($subject, $config)); } ``` This approach improves code maintainability, provides better type hinting to IDEs, and follows modern PHP testing practices.