Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Run Rector on your code to see what it can do for you:

     
     public function run(bool $param)
     {
-        $this->service->method('execute')->willReturnMap(['asdf', 'adsfasdf']);
+        $this->service->expects($this->exactly(2))->method('execute')->willReturnMap(['asdf', 'adsfasdf']);
         
         $this->service->execute(); // simulate test
     }
 }

PHP snippet to change

<?php

use \PHPUnit\Framework\MockObject\Stub;

interface SomeInterface
{
    public function execute(): string;
}

final class FoobarTest extends \PHPUnit\Framework\TestCase
{
    private SomeInterface&Stub $service;
    
    protected function setUp() {
        $this->service = $this->createStub(SomeInterface::class);
    }
    
    public function run(bool $param)
    {
        $this->service->method('execute')->willReturnMap(['asdf', 'adsfasdf']);
        
        $this->service->execute(); // simulate test
    }
}

Applied Rules:

DecorateWillReturnMapWithExpectsMockRector

Not a change you expect?

Create an issue on GitHub
...or to speed up fix – add a test fixture

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;
use Rector\ValueObject\PhpVersion;

return RectorConfig::configure()
    // B. or few rules
    ->withRules([
        \Rector\PHPUnit\CodeQuality\Rector\Expression\DecorateWillReturnMapWithExpectsMockRector::class
    ]);

Rector version: 2.4.2 - released at 2026-04-16 14:00