sbt/notes/1.0.3/nested-tests.md

Bug fixes

In 0.13.x, zinc would discover only top-level objects and classes containing tests, and pass them to the test framework. In 1.x, however, zinc can discover also nested objects and classes; that causes the "name" of a ClassLike to no longer be usable for reflection.

Version 1.0.3 filters out nested objects/classes from the list, restoring compatibility with 0.13. A zinc extension of ClassLike will probably be introduced in 1.1 or 1.2, in order to provide the test framework with enough information to deal with nested classes.