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 testSomething()
     {
-        self::assertJsonResponse(contentType: 'text/html');
+        self::assertJsonResponse(contentType: 0);
     }
 
     protected static function assertJsonResponse(int $statusCode = 200, string $contentType = 'application/json'): void

PHP snippet to change

<?php
use PHPUnit\Framework\TestCase;

final class DemoTest extends TestCase
{
    public function testSomething()
    {
        self::assertJsonResponse(contentType: 'text/html');
    }

    protected static function assertJsonResponse(int $statusCode = 200, string $contentType = 'application/json'): void
    {
		// logic
    }
}

Applied Rules:

ScalarArgumentToExpectedParamTypeRector

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\PHPUnit\CodeQuality\Rector\MethodCall\ScalarArgumentToExpectedParamTypeRector;

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

Rector version: b09565 - released at 2026-05-25 06:37