File

spec/util_uuid_spec.lua @ 13136:396db0e7084f

mod_storage_internal: Use a binary search for time based ranges Iterating over an entire archive to find a few items in the far end from where iteration started is expensive, and probably more expensive with the lazy-loading of items added in the previous commit. Since we can now efficiently read items in random order, we can now use a binary search to find a better starting point for iteration.
author Kim Alvefur <zash@zash.se>
date Wed, 12 May 2021 01:32:03 +0200
parent 12604:bd9e006a7a74
line wrap: on
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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
		end);
	end);
end);