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/* eslint no-shadow: 0 */
const test = require("tap").test;const ss = require("../");
test("factorial", function (t) {    t.test(        "cannot calculate the factorial of a number lower than zero",        function (t) {            t.throws(function () {                ss.factorial(-1);            });            t.end();        }    );    t.test("rejects floating-point inputs", function (t) {        t.throws(function () {            ss.factorial(0.5);        });        t.end();    });    t.test("can calculate 0! = 1", function (t) {        t.equal(ss.factorial(0), 1);        t.end();    });    t.test("can calculate 1! = 1", function (t) {        t.equal(ss.factorial(1), 1);        t.end();    });    t.test("can calculate 100! = 1", function (t) {        t.equal(ss.factorial(100), 9.33262154439441e157);        t.end();    });    t.end();});