refactor tests

[nlf]

this is an effort to refactor the testing baseline to something easier to navigate and extend.

yes, it's very verbose, but it makes it extremely clear what inputs are parseable and what are not and adding new test cases is as simple as it can be.

[nlf]

converted back to draft because t.match() was not doing what i thought it was so many of these tests are passing but not actually passing. will fix the assertions, fix the tests to match and update this pull request