flo-poly/__tests__/basic/double/multiply-by-const.spec.ts

A practical, root-focused JavaScript polynomial utility library.

import { assert, expect } from 'chai';
import { describe } from 'mocha';
import { multiplyByConst } from '../../../src/index.js';


describe('multiplyByConst', function() {
	it('should correctly multiply some polynomials with double precision coefficients by a constant', 
	function() {
		let p1: number[] = [];
		let p2 = [1.1,2.2,3.3,4.4];
		expect(multiplyByConst(2,p1)).to.eql([]);
		expect(multiplyByConst(2,p2)).to.eql([2.2,4.4,6.6,8.8]);
	});
	
	
	it('should return the zero polynomial if the polynomial was multiplied by 0', 
	function() {
		let p1 = [1.1,2.2,3.3,4.4];
		expect(multiplyByConst(0,p1)).to.eql([]);
	});
});