import { describe, expect, it } from '@jest/globals';
import { eEqual } from '../../../src/basic/expansion/e-equal.js';
import { eChangeVariablesLinear } from '../../../src/change-variables/expansion/e-change-variables-linear.js';


describe('eChangeVariablesLinear', function() {
    it('should correctly perform the change of variables p(x) <- p(ax + b) for some polynomials with Shewchuk expansion coefficients', 
    function() {
        let p1: number[][] = [];
        let p2 = [[1],[2],[7]];
        expect(eEqual(eChangeVariablesLinear(p1, 3, 4), [])).toEqual(true);
        expect(eEqual(eChangeVariablesLinear(p2, 3, 4), [[9],[30],[31]])).toEqual(true);
    });
});