Test 4: Validating duplicate detection...
Found 10 duplicate groups:
  - John Smith: 1 duplicate(s)
  - Jane Doe: 1 duplicate(s)
  - Bob J.: 1 duplicate(s)
  - Michael A. Caine: 1 duplicate(s)
  - Richard Roe: 1 duplicate(s)
  - Full Contact: 3 duplicate(s)
  - Test Name: 2 duplicate(s)
  - Name Match: 1 duplicate(s)
  - Duplicate Email: 1 duplicate(s)
  - Duplicate Phone: 1 duplicate(s)
WARNING: 'John Smith' has 1 duplicates, expected 2
ERROR: Expected duplicate group for 'Sarah Johnson' not found
ERROR: Expected duplicate group for 'Michael Brown' not found
ERROR: Expected duplicate group for 'Jennifer Davis' not found
ERROR: Expected duplicate group for 'Robert Wilson' not found
ERROR: Expected duplicate group for 'Lisa Anderson' not found

ERROR: Missing 5 expected duplicate groups