phpunit.callParent - Phpstan

Code example

php

<?php declare(strict_types = 1);

use PHPUnit\Framework\TestCase;

class BaseTestCase extends TestCase
{
	protected function setUp(): void
	{
		// important initialization
	}
}

class MyTest extends BaseTestCase
{
	protected function setUp(): void
	{
		$this->value = true; // Missing call to parent::setUp()
	}
}

Why is it reported?

This error is reported by the phpstan-phpunit extension.

When a PHPUnit test class overrides setUp() or tearDown() and the parent class (other than TestCase itself) also defines these methods, failing to call the parent method can skip important initialization or cleanup logic. This can lead to subtle test failures or resource leaks.

How to fix it

Add a call to the parent method:

diff-php

 <?php declare(strict_types = 1);

 class MyTest extends BaseTestCase
 {
 	protected function setUp(): void
 	{
+		parent::setUp();
+
 		$this->value = true;
 	}
 }