Traits
A copy of \Drupal\Core\DependencyInjection\AutowireTrait with first params' type hint changed.
Common functionality for overridden kernels.
Note: when using this trait, also implement ConfigAwareInterface/ConfigAwareTrait.
CliTestTrait provides an execute() method that is useful
for launching executable programs in functional tests.
DrushTestTrait provides a drush() method that may be
used to write functional tests for Drush extensions.
OutputUtilsTrait provides some useful utility methods for test classes
that define getOutputRaw() and getErrorOutputRaw() methods.