File

spec/util_ip_spec.lua @ 11769:071715a18394

mod_pubsub: Move reversal of item order in <items> Examples in XEP-0060 suggest that items should be listed in chronological order, but we get them from the archive in reverse order. However when requesting specific items by id the results keep that order and we don't want to flip it again. At some point it would likely be best to use the archive API directly instead of this util.cache-compatible wrapper.
author Kim Alvefur <zash@zash.se>
date Sun, 05 Sep 2021 18:42:44 +0200
parent 8236:4878e4159e12
child 12934:c6dffebab2f8
line wrap: on
line source


local ip = require "util.ip";

local new_ip = ip.new_ip;
local match = ip.match;
local parse_cidr = ip.parse_cidr;
local commonPrefixLength = ip.commonPrefixLength;

describe("util.ip", function()
	describe("#match()", function()
		it("should work", function()
			local _ = new_ip;
			local ip = _"10.20.30.40";
			assert.are.equal(match(ip, _"10.0.0.0", 8), true);
			assert.are.equal(match(ip, _"10.0.0.0", 16), false);
			assert.are.equal(match(ip, _"10.0.0.0", 24), false);
			assert.are.equal(match(ip, _"10.0.0.0", 32), false);

			assert.are.equal(match(ip, _"10.20.0.0", 8), true);
			assert.are.equal(match(ip, _"10.20.0.0", 16), true);
			assert.are.equal(match(ip, _"10.20.0.0", 24), false);
			assert.are.equal(match(ip, _"10.20.0.0", 32), false);

			assert.are.equal(match(ip, _"0.0.0.0", 32), false);
			assert.are.equal(match(ip, _"0.0.0.0", 0), true);
			assert.are.equal(match(ip, _"0.0.0.0"), false);

			assert.are.equal(match(ip, _"10.0.0.0", 255), false, "excessive number of bits");
			assert.are.equal(match(ip, _"10.0.0.0", -8), true, "negative number of bits");
			assert.are.equal(match(ip, _"10.0.0.0", -32), true, "negative number of bits");
			assert.are.equal(match(ip, _"10.0.0.0", 0), true, "zero bits");
			assert.are.equal(match(ip, _"10.0.0.0"), false, "no specified number of bits (differing ip)");
			assert.are.equal(match(ip, _"10.20.30.40"), true, "no specified number of bits (same ip)");

			assert.are.equal(match(_"127.0.0.1", _"127.0.0.1"), true, "simple ip");

			assert.are.equal(match(_"8.8.8.8", _"8.8.0.0", 16), true);
			assert.are.equal(match(_"8.8.4.4", _"8.8.0.0", 16), true);
		end);
	end);

	describe("#parse_cidr()", function()
		it("should work", function()
			assert.are.equal(new_ip"0.0.0.0", new_ip"0.0.0.0")

			local function assert_cidr(cidr, ip, bits)
				local parsed_ip, parsed_bits = parse_cidr(cidr);
				assert.are.equal(new_ip(ip), parsed_ip, cidr.." parsed ip is "..ip);
				assert.are.equal(bits, parsed_bits, cidr.." parsed bits is "..tostring(bits));
			end
			assert_cidr("0.0.0.0", "0.0.0.0", nil);
			assert_cidr("127.0.0.1", "127.0.0.1", nil);
			assert_cidr("127.0.0.1/0", "127.0.0.1", 0);
			assert_cidr("127.0.0.1/8", "127.0.0.1", 8);
			assert_cidr("127.0.0.1/32", "127.0.0.1", 32);
			assert_cidr("127.0.0.1/256", "127.0.0.1", 256);
			assert_cidr("::/48", "::", 48);
		end);
	end);

	describe("#new_ip()", function()
		it("should work", function()
			local v4, v6 = "IPv4", "IPv6";
			local function assert_proto(s, proto)
				local ip = new_ip(s);
				if proto then
					assert.are.equal(ip and ip.proto, proto, "protocol is correct for "..("%q"):format(s));
				else
					assert.are.equal(ip, nil, "address is invalid");
				end
			end
			assert_proto("127.0.0.1", v4);
			assert_proto("::1", v6);
			assert_proto("", nil);
			assert_proto("abc", nil);
			assert_proto("   ", nil);
		end);
	end);

	describe("#commonPrefixLength()", function()
		it("should work", function()
			local function assert_cpl6(a, b, len, v4)
				local ipa, ipb = new_ip(a), new_ip(b);
				if v4 then len = len+96; end
				assert.are.equal(commonPrefixLength(ipa, ipb), len, "common prefix length of "..a.." and "..b.." is "..len);
				assert.are.equal(commonPrefixLength(ipb, ipa), len, "common prefix length of "..b.." and "..a.." is "..len);
			end
			local function assert_cpl4(a, b, len)
				return assert_cpl6(a, b, len, "IPv4");
			end
			assert_cpl4("0.0.0.0", "0.0.0.0", 32);
			assert_cpl4("255.255.255.255", "0.0.0.0", 0);
			assert_cpl4("255.255.255.255", "255.255.0.0", 16);
			assert_cpl4("255.255.255.255", "255.255.255.255", 32);
			assert_cpl4("255.255.255.255", "255.255.255.255", 32);

			assert_cpl6("::1", "::1", 128);
			assert_cpl6("abcd::1", "abcd::1", 128);
			assert_cpl6("abcd::abcd", "abcd::", 112);
			assert_cpl6("abcd::abcd", "abcd::abcd:abcd", 96);
		end);
	end);
end);