By mondrake on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
9.3.x
Introduced in version: 
9.3.0
Issue links: 
https://www.drupal.org/node/3138078
Description: 

Starting release 9.3.0, all tests methods that perform assertions must have a void return typehint, to align to PHPUnit practices. If a test requires a method to return a value, it should not begin with assert*. Even better, arguments should be typehinted too.

BEFORE

  protected function assertEntity($id, $label, $type, $configuration) {

AFTER

protected function assertEntity(string $id, string $label, string $type, array $configuration): void {

Impacts: 
Module developers