Software /
code /
prosody
File
spec/util_table_spec.lua @ 13134:638f627e707f
util.datamanager: Add O(1) list indexing with on-disk index
Index file contains offsets and lengths of each item() which allows
seeking directly to each item and reading it without parsing the entire
file.
Also allows tricks like binary search, assuming items have some defined
order.
We take advantage of the 1-based indexing in tables to store a magic
header in the 0 position, so that table index 1 ends up at file index 1.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Tue, 11 May 2021 02:09:56 +0200 |
parent | 12942:54756e3a54b9 |
line wrap: on
line source
local u_table = require "util.table"; describe("util.table", function () describe("create()", function () it("works", function () -- Can't test the allocated sizes of the table, so what you gonna do? assert.is.table(u_table.create(1,1)); end); end); describe("pack()", function () it("works", function () assert.same({ "lorem", "ipsum", "dolor", "sit", "amet", n = 5 }, u_table.pack("lorem", "ipsum", "dolor", "sit", "amet")); end); end); describe("move()", function () it("works", function () local t1 = { "apple", "banana", "carrot" }; local t2 = { "cat", "donkey", "elephant" }; local t3 = {}; u_table.move(t1, 1, 3, 1, t3); u_table.move(t2, 1, 3, 3, t3); assert.same({ "apple", "banana", "cat", "donkey", "elephant" }, t3); end); it("supports overlapping regions", function () do local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }; u_table.move(t1, 1, 3, 3); assert.same({ "apple", "banana", "apple", "banana", "carrot", "fig", "grapefruit" }, t1); end do local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }; u_table.move(t1, 1, 3, 2); assert.same({ "apple", "apple", "banana", "carrot", "endive", "fig", "grapefruit" }, t1); end do local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }; u_table.move(t1, 3, 5, 2); assert.same({ "apple", "carrot", "date", "endive", "endive", "fig", "grapefruit" }, t1); end do local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }; u_table.move(t1, 3, 5, 6); assert.same({ "apple", "banana", "carrot", "date", "endive", "carrot", "date", "endive" }, t1); end do local t1 = { "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }; u_table.move(t1, 3, 1, 3); assert.same({ "apple", "banana", "carrot", "date", "endive", "fig", "grapefruit" }, t1); end end); end); end);