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 testFooMock(): void
     {
-        $mock = $this->getMockBuilder(Foo::class)
-            ->disableOriginalConstructor()
-            ->getMock()
+        $mock = $this->createMock(Foo::class)
         ;
     }
 }

PHP snippet to change

<?php

use PHPUnit\Framework\TestCase;

final class FooTest extends TestCase
{
    public function testFooMock(): void
    {
        $mock = $this->getMockBuilder(Foo::class)
            ->disableOriginalConstructor()
            ->getMock()
        ;
    }
}

Applied Rules:

GetMockBuilderGetMockToCreateMockRector

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\ValueObject\PhpVersion;
use Rector\PHPUnit\PHPUnit60\Rector\MethodCall\GetMockBuilderGetMockToCreateMockRector;

return RectorConfig::configure()
    ->withRules([
        GetMockBuilderGetMockToCreateMockRector::class
    ])
    // demonstrate specific PHP version
    ->withPhpVersion(PhpVersion::PHP_84);

Rector version: 9dccc8 - released at 2026-04-04 09:34