* add type inference to getAttrs methods and refactor accordingly
* Tests/infer types for get attrs methods (#1)
* #1633: add spec/tests for coverage
* move ability/move tests into /src/tests and rename to *.test.ts to match common naming patterns
* use None in test cases to remove ambiguity
* revert back to before test cases were merged
---------
Co-authored-by: flx-sta <50131232+flx-sta@users.noreply.github.com>