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mad.test.js
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mad.test.js
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/* eslint no-shadow: 0 */
const test = require("tap").test;
const ss = require("../");
test("median absolute deviation (mad)", function (t) {
t.test(
"median absolute deviation of an example on wikipedia",
function (t) {
t.equal(ss.mad([1, 1, 2, 2, 4, 6, 9]), 1);
t.end();
}
);
// wolfram alpha: median absolute deviation {0,1,2,3,4,5,6,7,8,9,10}
t.test("median absolute deviation of 0-10", function (t) {
t.equal(ss.mad([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]), 3);
t.end();
});
t.test("median absolute deviation of one number is zero", function (t) {
t.equal(ss.mad([1]), 0);
t.end();
});
t.test("zero-length corner case", function (t) {
t.throws(function () {
ss.mad([]);
});
t.end();
});
t.end();
});