This is a follow-up on this comment: https://www.drupal.org/node/2364555#comment-9336771
SqlContentEntityStorageSchema::performFieldSchemaOperation() has no unit test coverage, though its wrapper method does:
There should be wider unit coverage of
performFieldSchemaOperation(), since it's the main dependency of a number of wrapper methods for various combination of operations and underlying table mappings.
Write a thorough unit test of
Review the patch.
Commit the patch.
User interface changes
Beta phase evaluation
|Unfrozen changes||Unfrozen because it only improves automated tests.|