As of Drupal 9, no core themes declare a dependency on Classy. As I understand it, Classy will be going away in Drupal 10. In #3247901: ContentTranslationUITestBase should not rely on Classy the last test references to Classy were removed from core.
Unless we are expecting Classy-specific markup in tests, we should be specifying another core theme such as Stark instead. Currently there are two entity_embed tests that require Classy.
Comments
Comment #2
daniel_j commentedComment #3
daniel_j commentedComment #4
dave reidUpdated patch that should fix the test failures.
Comment #5
dave reidCorrect version of the patch with all the changes.
Comment #8
dave reidComment #10
dave reidComment #12
dave reidCommitted #10 to 8.x-1.x.