Change record status: 
Project: 
Introduced in branch: 
8.6.x
Description: 

The Simpletest version of the \Drupal\system\Tests\System\SystemConfigFormTestBase base class for testing config forms has been deprecated and will be removed before Drupal 9.0.0. The replacement is a kernel test version \Drupal\KernelTests\ConfigFormTestBase.

If tests were extending the old one and utilizing non-kernel-test features of the class (such as drupalGet()) those tests will need to be split into a functional and kernel components.

Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done