AddReturnArrayDocblockFromDataProviderParamRector

Find another rule

Add @return array return from data provider param type

 use PHPUnit\Framework\TestCase;

 final class SomeClass extends TestCase
 {
     /**
      * @dataProvider provideNames()
      */
     public function test(string $name)
     {
     }

+    /**
+     * @return string[]
+     */
     public function provideNames(): array
     {
         return ['John', 'Jane'];
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclarationDocblocks\Rector\Class_\AddReturnArrayDocblockFromDataProviderParamRector;

return RectorConfig::configure()
    ->withRules([
        AddReturnArrayDocblockFromDataProviderParamRector::class,
    ]);