let should = require.('chai').should()
let toSort = require.('../SortedList1').SortedList

describe("SortedList", function () {

    it('whether element is pushed', function () {expect(add(element).length).to.equal(this.list.push(element).length, "element is pushed")});
    it('whether element is deleted', function() { expect(remove(element).length).to.equal(this.list.splice(index, 1), "element is deleted")   })
});