assert then refactoring processor does not throw exceptions (in test mode for now), see IDEA-84373

platform/lang-impl/src/com/intellij/refactoring/BaseRefactoringProcessor.java

@@ -173,6 +173,9 @@ public abstract class BaseRefactoringProcessor {
         }
         catch (Throwable e) {
           anyException.set(Boolean.TRUE);
+          if (ApplicationManager.getApplication().isUnitTestMode()) {
+            LOG.error(e);
+          }
         }
       }
     };