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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> |
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date | Wed, 12 May 2021 01:32:03 +0200 |
parent | 12604:bd9e006a7a74 |
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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);