Software / code / prosody
Diff
spec/util_uuid_spec.lua @ 13317:e6a5f196fc1f
util.uuid: Add UUIDv7
Allows sorting by id as a substitute for sorting by timestamp since it
has the timestamp in the encoded in the first part, and only things that
happen extremely close together may get out of order by such a sort,
which might not matter.
From draft-ietf-uuidrev-rfc4122bis formerly draft-peabody-dispatch-new-uuid-format
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 15 Aug 2021 14:44:21 +0200 |
| parent | 12604:bd9e006a7a74 |
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--- a/spec/util_uuid_spec.lua Sat Nov 11 21:33:53 2023 +0100 +++ b/spec/util_uuid_spec.lua Sun Aug 15 14:44:21 2021 +0200 @@ -20,6 +20,28 @@ for _ = 1, 100 do assert.is_string(uuid.generate():match(pattern)); end + + assert.truthy(uuid.generate() ~= uuid.generate(), "does not generate the same UUIDv4 twice") + end); + end); + describe("#v7", function() + it("should also follow the UUID pattern", function() + local pattern = "^" .. table.concat({ + string.rep("%x", 8), + string.rep("%x", 4), + "7" .. -- version + string.rep("%x", 3), + "[89ab]" .. -- reserved bits of 1 and 0 + string.rep("%x", 3), + string.rep("%x", 12), + }, "%-") .. "$"; + + local one = uuid.v7(); -- one before the loop to ensure some time passes + for _ = 1, 100 do + assert.is_string(uuid.v7():match(pattern)); + end + -- one after the loop when some time should have passed + assert.truthy(one < uuid.v7(), "should be ordererd") end); end); end);
