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

import { eEqual } from '../../../src/basic/expansion/e-equal.js';
import { eIsConstOrZero } from '../../../src/basic/expansion/e-is-const-or-zero.js';


describe('eIsConstOrZero', function() {
    it('should correctly report some polynomials as being a constant or the zero polynomial', 
    function() {
        let p1: number[][] = [];
        let p2 = [[1]];
        let p3 = [[0.000000000000000000001, 3]];
        let p4 = [[4],[3],[2],[1]];
        expect(eIsConstOrZero(p1)).toEqual(true);
        expect(eIsConstOrZero(p2)).toEqual(true);
        expect(eIsConstOrZero(p3)).toEqual(true);
        expect(!eIsConstOrZero(p4)).toEqual(true);
    });
});