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-- This tests the format, not the randomness
local uuid = require "util.uuid";
describe("util.uuid", function()
describe("#generate()", function()
it("should work follow the UUID pattern", function()
-- https://www.rfc-editor.org/rfc/rfc4122.html#section-4.4
local pattern = "^" .. table.concat({
string.rep("%x", 8),
string.rep("%x", 4),
"4" .. -- version
string.rep("%x", 3),
"[89ab]" .. -- reserved bits of 1 and 0
string.rep("%x", 3),
string.rep("%x", 12),
}, "%-") .. "$";
for _ = 1, 100 do
assert.is_string(uuid.generate():match(pattern));
end
assert.truthy(uuid.generate() ~= uuid.generate(), "does not generate the same UUIDv4 twice")
end);
end);
describe("#v7", function()
it("should also follow the UUID pattern", function()
local pattern = "^" .. table.concat({
string.rep("%x", 8),
string.rep("%x", 4),
"7" .. -- version
string.rep("%x", 3),
"[89ab]" .. -- reserved bits of 1 and 0
string.rep("%x", 3),
string.rep("%x", 12),
}, "%-") .. "$";
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);
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