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

import { equal } from '../../../src/basic/double/equal.js';
import { differentiate } from '../../../src/calculus/double/differentiate.js';


describe('differentiate', function() {
    it('should differentiate some polynomials with double precision coefficients correctly', 
    function() {
        let p1: number[] = [];
        let p2 = [1];
        let p3 = [5, 4, 3, 2, 1];
        expect(equal(differentiate(p1), [])).toEqual(true);
        expect(equal(differentiate(p2), [])).toEqual(true);
        expect(equal(differentiate(p3), [20, 12, 6, 2])).toEqual(true);
    });
});