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

import { eContent } from '../../../src/factor/expansion/e-content.js';


describe('eContent', function() {
    it('should calculate the correct content of some polynomials', 
    function() {
        let p1: number[][] = [];
        let p2 = [[1]];
        let p3 = [[-10], [5], [5]]; //=> cont(p3) = cont(-10x² + 5x + 5) = -5
        let p4 = [[10], [5], [5]];  //=> cont(p4) = cont( 10x² + 5x + 5) =  5
        expect(eContent(p1)).toEqual([1]);
        expect(eContent(p2)).toEqual([1]);
        expect(eContent(p3)).toEqual([-5]);
        expect(eContent(p4)).toEqual([5]);
    });
});