Intent of reader.go ×2

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 5 tests
- server/ 5 tests
  - service/ 5 tests
    
    history/ 5 tests
    
    queues/ 5 tests
    
    TestQueueBaseSuite/ 4 tests
    
    go.temporal.io/server/service/history/queues/TestQueueBaseSuite/TestCheckPoint_MoveTaskGroupAction Inherited action_move_group.go ×11
    
    go.temporal.io/server/service/history/queues/TestQueueBaseSuite/TestCheckPoint_SlicePredicateAction Inherited action_slice_predicate.go ×6
    
    go.temporal.io/server/service/history/queues/TestQueueBaseSuite/TestCheckPoint_WithPendingTasks_PerformRangeCompletion Inherited TestCheckPoint_WithPendingTasks_PerformRangeCompletion
    
    go.temporal.io/server/service/history/queues/TestQueueBaseSuite/TestCheckPoint_WithPendingTasks_SkipRangeCompletion Inherited queue_base.go ×1
    
    TestReaderSuite/ 1 test
    
    go.temporal.io/server/service/history/queues/TestReaderSuite/TestShrinkSlices Inherited reader.go ×1