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/* eslint no-shadow: 0 */
const test = require("tap").test;const ss = require("../dist/simple-statistics.js");
test("r-squared", function (t) {    t.test(        "says that the r squared of a two-point line is perfect",        function (t) {            const d = [                [0, 0],                [1, 1]            ];            const l = ss.linearRegressionLine(ss.linearRegression(d));            t.equal(ss.rSquared(d, l), 1);            t.end();        }    );
    t.test(        "says that the r squared of a three-point line is not perfect",        function (t) {            const d = [                [0, 0],                [0.5, 0.2],                [1, 1]            ];            const l = ss.linearRegressionLine(ss.linearRegression(d));            t.not(ss.rSquared(d, l), 1);            t.end();        }    );
    t.test("r-squared of single sample is 1", function (t) {        const d = [[0, 0]];        const l = ss.linearRegressionLine(ss.linearRegression(d));        t.equal(ss.rSquared(d, l), 1);        t.end();    });    t.end();});