File

spec/util_human_io_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 13054:f4d7fe919969
child 13196:eca44e058eed
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describe("util.human.io", function ()
	local human_io
	setup(function ()
		human_io = require "util.human.io";
	end);
	describe("table", function ()

		it("alignment works", function ()
			local row = human_io.table({
					{
						width = 3,
						align = "right"
					},
					{
						width = 3,
					},
				});

			assert.equal("  1 | .  ", row({ 1, "." }));
			assert.equal(" 10 | .. ", row({ 10, ".." }));
			assert.equal("100 | ...", row({ 100, "..." }));
			assert.equal("10… | ..…", row({ 1000, "...." }));

		end);
	end);

	describe("ellipsis", function()
		it("works", function()
			assert.equal("…", human_io.ellipsis("abc", 1));
			assert.equal("a…", human_io.ellipsis("abc", 2));
			assert.equal("abc", human_io.ellipsis("abc", 3));

			assert.equal("…", human_io.ellipsis("räksmörgås", 1));
			assert.equal("r…", human_io.ellipsis("räksmörgås", 2));
			assert.equal("rä…", human_io.ellipsis("räksmörgås", 3));
			assert.equal("räk…", human_io.ellipsis("räksmörgås", 4));
			assert.equal("räks…", human_io.ellipsis("räksmörgås", 5));
			assert.equal("räksm…", human_io.ellipsis("räksmörgås", 6));
			assert.equal("räksmö…", human_io.ellipsis("räksmörgås", 7));
			assert.equal("räksmör…", human_io.ellipsis("räksmörgås", 8));
			assert.equal("räksmörg…", human_io.ellipsis("räksmörgås", 9));
			assert.equal("räksmörgås", human_io.ellipsis("räksmörgås", 10));
		end);
	end);

	describe("parse_duration", function ()
		local function test(expected, duration)
			assert.equal(expected, human_io.parse_duration(duration));
		end
		it("works", function ()
			test(1, "1s");
			test(60, "1mi");
			test(60, "1min");
			test(60, "1 min");
			test(60, "1 minute");
			test(120, "2min");
			test(86400, "1d");
			test(2678400, "1m");
			test(2678400, "1month");
			test(2678400, "1 month");
		end);
	end);
end);