local encodings = require "util.encodings";

local utf8 = assert(encodings.utf8, "no encodings.utf8 module");

describe("util.encodings", function ()

	describe("#encode()", function()

		it("should work", function ()

			assert.is.equal(encodings.base64.encode(""), "");

			assert.is.equal(encodings.base64.encode('coucou'), "Y291Y291");

			assert.is.equal(encodings.base64.encode("\0\0\0"), "AAAA");

			assert.is.equal(encodings.base64.encode("\255\255\255"), "////");

		end);

	end);

	describe("#decode()", function()

		it("should work", function ()

			assert.is.equal(encodings.base64.decode(""), "");

			assert.is.equal(encodings.base64.decode("="), "");

			assert.is.equal(encodings.base64.decode('Y291Y291'), "coucou");

			assert.is.equal(encodings.base64.decode("AAAA"), "\0\0\0");

			assert.is.equal(encodings.base64.decode("////"), "\255\255\255");

		end);

	end);

end);

describe("util.encodings.utf8", function()

	describe("#valid()", function()

		it("should work", function()

			for line in io.lines("spec/utf8_sequences.txt") do

				local data = line:match(":%s*([^#]+)"):gsub("%s+", ""):gsub("..", function (c) return string.char(tonumber(c, 16)); end)

				local expect = line:match("(%S+):");

				assert(expect == "pass" or expect == "fail", "unknown expectation: "..line:match("^[^:]+"));

				local valid = utf8.valid(data);

				assert.is.equal(valid, utf8.valid(data.." "));

				assert.is.equal(valid, expect == "pass", line);

			end

		end);

	end);

end);