I found the main reason of decreasing the coverage score is the issue of Code Coverage package.
The latest version 1.2.2 of Code Coverage package has issues which ignores the covering some code. So it decreased the coverage score. This issue is not reproduced with the previous version 1.1.1 so I downgraded the package.
This pull request improves test coverage.
I found the main reason of decreasing the coverage score is the issue of Code Coverage package. The latest version 1.2.2 of Code Coverage package has issues which ignores the covering some code. So it decreased the coverage score. This issue is not reproduced with the previous version 1.1.1 so I downgraded the package.
I got the result below after improving.