deno.land / x / simplestatistics@v7.8.3 / test / harmonic_mean.test.js
12345678910111213141516171819202122232425262728293031323334/* eslint no-shadow: 0 */
const test = require("tap").test;const ss = require("../dist/simple-statistics.js");
function rnd(x) { return Math.round(x * 1000) / 1000;}
test("harmonicMean", function (t) { // From http://en.wikipedia.org/wiki/Harmonic_mean t.test("can get the mean of two or more numbers", function (t) { t.equal(ss.harmonicMean([1, 1]), 1); t.equal(rnd(ss.harmonicMean([2, 3])), 2.4); t.equal(ss.harmonicMean([1, 2, 4]), 12 / 7); t.end(); });
t.test("cannot calculate for empty lists", function (t) { t.throws(function () { ss.harmonicMean([]); }); t.end(); });
t.test("cannot calculate for lists with negative numbers", function (t) { t.throws(function () { ss.harmonicMean([-1]); }); t.end(); }); t.end();});
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