* Add tests for init.
* Add more test init.
* Fix test init side_effect.
* Add test sensor.
* Fix sensor test file name.
* Fix sensor test.
* Add binary sensor test.
* Fix comments and styling.
* Remove apcupsd from omissions in coveragerc.
* Add a test case for binary sensor when STATFLAG is not available.
* Complete type annotations for test files.
* Revert "Remove apcupsd from omissions in coveragerc."
This reverts commit 66b05fcb8829619a771a650a3d70174089e15d91.