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)

			return assert.equal(expected, human_io.parse_duration(duration), ("%q -> %d"):format(duration, expected));

		end

		local function should_fail(duration)

			assert.is_nil(human_io.parse_duration(duration), "invalid duration should fail: %q");

		end

		it("works", function ()

			test(1, "1s");

			test(60, "1min");

			test(60, "1 min");

			test(60, "1 minute");

			test(120, "2min");

			test(7200, "2h");

			test(7200, "2 hours");

			test(86400, "1d");

			test(604800, "1w");

			test(604800, "1week");

			test(1814400, "3 weeks");

			test(2678400, "1month");

			test(2678400, "1 month");

			test(31536000, "365 days");

			test(31556952, "1 year");

			should_fail("two weeks");

			should_fail("1m");

			should_fail("1mi");

			should_fail("1mo");

		end);

	end);

	describe("parse_duration_lax", function ()

		local function test(expected, duration)

			return assert.equal(expected, human_io.parse_duration_lax(duration), ("%q -> %d"):format(duration, expected));

		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(7200, "2h");

			test(7200, "2 hours");

			test(86400, "1d");

			test(604800, "1w");

			test(604800, "1week");

			test(1814400, "3 weeks");

			test(2678400, "1m");

			test(2678400, "1mo");

			test(2678400, "1month");

			test(2678400, "1 month");

			test(31536000, "365 days");

			test(31556952, "1 year");

			return assert.is_nil(human_io.parse_duration_lax("two weeks"), "\"2 weeks\" -> nil");

		end);

	end);

end);