Tests added to show download filters working

[hkethi002]

Tests for the download filters

Review Checklist

• Tests were added to cover all code changes
• Documentation was added / updated
• Code and tests follow standards in CONTRIBUTING.md

[nagem]

Thanks! It's interesting they were written to support filtering by tags on files, as that's not a very well supported use case (tagging files, usually it's containers). It will need to get supplemented/modified to support the requested use case of filtering by a broader list of fields but it's nice to know what is there works.

[ryansanford]

@hkethi002
General question, not a blocker for this PR: I was expecting a bit for the coverage to go up, but it remained the same. Guessing that's because the same file type/tag filtering logic gets covered by other tests?

[hkethi002]

Yeah, I think the filter is used already for tags but not types in the tests however, asserts are never made as to whether the filter actually filters the files