Committed the tests at https://github.com/Selaron/hibernate-test-case-templates.git
Branch "HHH-12648"

git clone https://github.com/Selaron/hibernate-test-case-templates.git

cd hibernate-test-case-templates

git checkout HHH-12648

orm/hibernate-orm-5/
(1) DirtyTrackingPersistentSetTest : succeeds

• Annotation configured Persistence
• Extra Lazy oneToMany Collection
• Reduced ByteCodeEnhancement: CustomEnhancerTestContext
  • doBiDirectionalAssociationManagement: false
  • doExtendedEnhancement: false

(2) DirtyTrackingExtraLazyPersistentSetWithXmlMappingTest : some failures

• XML Mapping configured Persistence
• rest same as (1)

(3) DirtyTrackingLazyPersistentSetWithXmlMappingTest : all tests fail

• Normal Lazy oneToMany Collection
• rest same as (2)

I run the test from Eclipse. When running with Maven, *.hbm.xmls are not found.