-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- 

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

function new(new, multitable)

	mt = new();

	assert_table(mt, "Multitable is a table");

	assert_function(mt.add, "Multitable has method add");

	assert_function(mt.get, "Multitable has method get");

	assert_function(mt.remove, "Multitable has method remove");

	get(mt.get, multitable);

end

function get(get, multitable)

	local function has_items(list, ...)

		local should_have = {};

		if select('#', ...) > 0 then

			assert_table(list, "has_items: list is table", 3);

		else

			assert_is_not(list and #list > 0, "No items, and no list");

			return true, "has-all";

		end

		for n=1,select('#', ...) do should_have[select(n, ...)] = true; end

		for n, item in ipairs(list) do

			if not should_have[item] then return false, "too-many"; end

			should_have[item] = nil;

		end

		if next(should_have) then

			return false, "not-enough";

		end

		return true, "has-all";

	end

	local function assert_has_all(message, list, ...)

		return assert_equal(select(2, has_items(list, ...)), "has-all", message or "List has all expected items, and no more", 2);

	end

	mt = multitable.new();

	local trigger1, trigger2, trigger3 = {}, {}, {};

	local item1, item2, item3 = {}, {}, {};

	assert_has_all("Has no items with trigger1", mt:get(trigger1));

	mt:add(1, 2, 3, item1);

	assert_has_all("Has item1 for 1, 2, 3", mt:get(1, 2, 3), item1);

-- Doesn't support nil

--[[	mt:add(nil, item1);

	mt:add(nil, item2);

	mt:add(nil, item3);

	assert_has_all("Has all items with (nil)", mt:get(nil), item1, item2, item3);

]]

end