Test should be an integration test and not a unit test for all YAML files being decoded in the same way with Symfony and PECL.

Problem/Motivation

Follow-up to #1920902: Add a Drupal Yaml wrapper so we can default to PECL Yaml component if it is available →

For the @todo

   * @todo This should exist as an integration test not part of our unit tests.

in testYamlFiles()

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes