refactor(tvix/glue): return a parsed Url in NixFetchArgs r/8307

The only two consumers (fetchurl, fetchtarball) of these do try to parse
it as URL, so do it in the helper.

Update url_basename to take a &url::URL, not a &str.

Also update the test to use rstest for the fixtures to reduce some
boilerplate there.

Change-Id: I1f85fe2803060dc4423e673cb7b9f9bf799d09b9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11875
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>

0 files changed, 0 insertions, 0 deletions