refactor(archive): format test names

[timreichen]

Ref: #3754

[iuioiua]

LGTM. Thank you.

[iuioiua]

Note to self: use these names in #1985.

[kt3k]

I wonder if the expression like Tar() makes sense as Tar is a class here

[iuioiua]

What do you suggest?

[kt3k]

If a test case is simple enough, I think we can use something like:

Deno.test("Tar", (t) => {
  t.step("append() blah blah", () => {});
  t.step("getReader() blah blah", () => {});
});

[kt3k]

But if a test case is complex and needs to involve multiple APIs (in other words, integration test type ones), maybe we need to allow more arbitrary format