import { describe, expect, it } from '@jest/globals';

import { equal } from '../../../src/basic/double/equal.js';
import { flatRootsArr } from '../../../src/predictive-random/double/random.js';


describe('random.flatRootsArr', function() {
    it('should predictably generate an array of polynomials with roots in a flat random distribution', 
    function() {
        let res: number[][];
        
        res = flatRootsArr(2,3,0,10);
        expect(equal(res[0], [1, -17.27247918024659, 97.33487287168995, -179.34094494147305])).toEqual(true);
        expect(equal(res[1], [1, -14.934967160224915, 57.624514485645406, -14.513933300587215])).toEqual(true);
        
        res = flatRootsArr(2,3,0,10);
        expect(equal(res[0], [1, -17.27247918024659, 97.33487287168995, -179.34094494147305])).toEqual(true);
        expect(equal(res[1], [1, -14.934967160224915, 57.624514485645406, -14.513933300587215])).toEqual(true);
        
        res = flatRootsArr(2,3,0,10,undefined,0.5);
        expect(equal(res[0], [1, -16.311874520033598, 88.69241678577377, -160.74884149867373])).toEqual(true);
        expect(equal(res[1], [1, -24.90289032459259, 205.46814676825528, -561.073491461604])).toEqual(true);
    });
});