expected collection contained:  [#<Epic id:15 group6/group7&2>, #<Epic id:16 group6/group7/group8&1>, #<Epic id:17 group6/group7/group8&2>, #<Epic id:18 group6/group7/group9&1>]
actual collection contained:    [#<Epic id:14 group6/group7&1>, #<Epic id:15 group6/group7&2>, #<Epic id:16 group6/group7/group8&1>, ...group6/group7/group8&2>, #<Epic id:18 group6/group7/group9&1>, #<Epic id:19 group6/group7/group9&2>]
the extra elements were:        [#<Epic id:14 group6/group7&1>, #<Epic id:19 group6/group7/group9&2>]
