Add tests for service/history/execution/mutable_state_task_generator.go

[fimanishi]

What changed? tests for service/history/execution/mutable_state_task_generator.go

Why? improve unit test coverage

How did you test it? unit tests

Potential risks

Release notes

Documentation Changes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 72.33%. Comparing base (b25960e) to head (ced7075). Report is 15 commits behind head on master.

Additional details and impacted files

[see 27 files with indirect coverage changes](https://app.codecov.io/gh/uber/cadence/pull/6129/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/uber/cadence/pull/6129?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/uber/cadence/pull/6129?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber). Last update [b25960e...ced7075](https://app.codecov.io/gh/uber/cadence/pull/6129?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber).

[coveralls]

Pull Request Test Coverage Report for Build 0190097e-921e-4e70-a0ca-546e784395ff

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 377 unchanged lines in 19 files lost coverage.
• Overall coverage decreased (-0.2%) to 71.237%

---

Files with Coverage Reduction	New Missed Lines	%
common/task/weighted_round_robin_task_scheduler.go	2	88.56%
common/task/parallel_task_processor.go	2	93.06%
common/persistence/sql/sqlplugin/mysql/task.go	2	73.68%
service/history/task/transfer_active_task_executor.go	2	72.77%
common/util.go	2	91.84%
service/frontend/wrappers/accesscontrolled/access_controlled.go	2	88.46%
common/persistence/sql/sqlplugin/mysql/db.go	2	79.49%
service/history/task/task.go	3	84.81%
service/history/handler/handler.go	3	96.2%
service/history/task/fetcher.go	3	86.6%
<!--	Total:	377		-->

Totals
Change from base Build 019008cc-dc35-4c24-a6bc-044c76fa1f43:	-0.2%
Covered Lines:	106112
Relevant Lines:	148957

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 019012da-4a77-44e9-9ef4-cb3a66339bee

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 385 unchanged lines in 20 files lost coverage.
• Overall coverage decreased (-0.2%) to 71.225%

---

Files with Coverage Reduction	New Missed Lines	%
service/history/queue/timer_queue_processor_base.go	1	78.28%
common/task/weighted_round_robin_task_scheduler.go	2	89.05%
service/matching/tasklist/db.go	2	73.23%
common/persistence/sql/sqlplugin/mysql/task.go	2	73.68%
service/frontend/wrappers/accesscontrolled/access_controlled.go	2	88.46%
service/history/execution/mutable_state_builder.go	2	78.45%
common/persistence/sql/sqlplugin/mysql/db.go	2	79.49%
service/history/task/task.go	3	84.81%
common/log/tag/tags.go	3	50.46%
common/task/fifo_task_scheduler.go	3	84.54%
<!--	Total:	385		-->

Totals
Change from base Build 019008cc-dc35-4c24-a6bc-044c76fa1f43:	-0.2%
Covered Lines:	106094
Relevant Lines:	148957

---

💛 - Coveralls