function encode(encode, json)

	local function test(f, j, e)

		if e then

			assert_equal(f(j), e);

		end

		assert_equal(f(j), f(json.decode(f(j))));

	end

	test(encode, json.null, "null")

	test(encode, {}, "{}")

	test(encode, {a=1});

	test(encode, {a={1,2,3}});

	test(encode, {1}, "[1]");

end

function decode(decode)

	local empty_array = decode("[]");

	assert_equal(type(empty_array), "table");

	assert_equal(#empty_array, 0);

	assert_equal(next(empty_array), nil);

end