By larowlan on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
10.1.x
Introduced in version: 
10.1.0
Issue links: 
https://www.drupal.org/node/3325730
Description: 

\Drupal\Tests\book\Functional\BookTestTrait::generateOutlinePattern is deprecated.

It is brittle and relies on regex to parse markup.

There is no direct replacement.

Use methods from \Drupal\Tests\WebAssert to test your code in a less brittle fashion instead

Impacts: 
Module developers