Intent of controller_impl.go ×2

All 8 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 8 tests
- server/ 8 tests
  - service/ 8 tests
    
    history/ 8 tests
    
    shard/ 8 tests
    
    TestShardControllerSuite/ 8 tests
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestHistoryEngineClosed Inherited TestHistoryEngineClosed
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestReadiness_MembershipChanged Inherited TestReadiness_MembershipChanged
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestShardControllerFuzz Inherited controller_impl.go ×3
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestShardExplicitUnload Inherited TestShardExplicitUnload
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestShardExplicitUnloadCancelAcquire Inherited TestShardExplicitUnloadCancelAcquire
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestShardExplicitUnloadCancelGetOrCreate Inherited context_impl.go ×2
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestShardLingerSuccess Inherited context_impl.go ×2
    
    go.temporal.io/server/service/history/shard/TestShardControllerSuite/TestShardLingerTimeout Inherited controller_impl.go ×1