Dedicated Test Subtests for Different File Types

[Offroaders123]

Right now I'm running all of my tests in a single subtest, and things are getting very disorganized and chaotic. I want to split things apart so they can use individual logic for each kind of file. Maybe I can use a switch statement for the file extension of the current file to test against, then I can choose which extensions get which tests. That seems fairly organized. That can make things easier for defining which types get what tests as well, since one file type might want to use multiple of the tests I make available, rather than one or the other exclusively.