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

import { eMultiplyByConst } from '../../../src/basic/expansion/e-multiply-by-const.js';


describe('eMultiplyByConst', function() {
    it('should correctly multiply some polynomials with Shewchuk expansion coefficients by a constant', 
    function() {
        let p1: number[][] = [];
        let p2 = [[1.1],[2.2],[3.3],[4.4]];
        let c = [2];
        expect(
            eMultiplyByConst(c,p1)).toEqual([]);
        expect(
            eMultiplyByConst(c,p2)).toEqual([[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]];
        let c = [0];
        expect(
            eMultiplyByConst(c,p1)).toEqual([]);
    });
});