prosody
e6a5f196fc1f
spec/util_uuid_spec.lua

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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
comparison
equal deleted inserted replaced
13316:a27a329e93ca 13317:e6a5f196fc1f
18 }, "%-") .. "$"; 18 }, "%-") .. "$";
19 19
20 for _ = 1, 100 do 20 for _ = 1, 100 do
21 assert.is_string(uuid.generate():match(pattern)); 21 assert.is_string(uuid.generate():match(pattern));
22 end 22 end
23
24 assert.truthy(uuid.generate() ~= uuid.generate(), "does not generate the same UUIDv4 twice")
25 end);
26 end);
27 describe("#v7", function()
28 it("should also follow the UUID pattern", function()
29 local pattern = "^" .. table.concat({
30 string.rep("%x", 8),
31 string.rep("%x", 4),
32 "7" .. -- version
33 string.rep("%x", 3),
34 "[89ab]" .. -- reserved bits of 1 and 0
35 string.rep("%x", 3),
36 string.rep("%x", 12),
37 }, "%-") .. "$";
38
39 local one = uuid.v7(); -- one before the loop to ensure some time passes
40 for _ = 1, 100 do
41 assert.is_string(uuid.v7():match(pattern));
42 end
43 -- one after the loop when some time should have passed
44 assert.truthy(one < uuid.v7(), "should be ordererd")
23 end); 45 end);
24 end); 46 end);
25 end); 47 end);