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/* eslint no-shadow: 0 */
const test = require("tap").test;const ss = require("../");
function rnd(x) {    return Math.round(x * 1000) / 1000;}
test("standardDeviation", function (t) {    t.test(        "can get the standard deviation of an example on wikipedia",        function (t) {            t.equal(rnd(ss.standardDeviation([2, 4, 4, 4, 5, 5, 7, 9])), 2);            t.end();        }    );
    // confirmed with numpy    // In [4]: numpy.std([1,2,3])    // Out[4]: 0.81649658092772603    t.test("can get the standard deviation of 1-3", function (t) {        t.equal(rnd(ss.standardDeviation([1, 2, 3])), 0.816);        t.end();    });
    t.test("zero-length array corner case", function (t) {        t.throws(function () {            ss.standardDeviation([]);        });        t.end();    });
    // In [6]: numpy.std([0,1,2,3,4,5,6,7,8,9,10])    // Out[6]: 3.1622776601683795    t.test("can get the standard deviation of 1-10", function (t) {        t.equal(            rnd(ss.standardDeviation([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10])),            3.162        );        t.end();    });
    t.test("the standard deviation of one number is zero", function (t) {        t.equal(rnd(ss.standardDeviation([1])), 0);        t.end();    });    t.end();});