List<Throwable> errors = schemaManager.getErrors();
assertEquals( 0, errors.size() );
assertEquals( ctrSize + 1, schemaManager.getComparatorRegistry().size() );
assertEquals( goidSize, schemaManager.getGlobalOidRegistry().size() );
LdapComparator<?> lc = new CsnComparator( oid );
assertFalse( schemaManager.add( lc ) );
errors = schemaManager.getErrors();
assertEquals( 1, errors.size() );