var expect = require('expect.js'), $ = require('../'), food = require('./fixtures').food; describe('utility methods', function() { describe('.contains', function() { it('(container, contained) : should correctly detect the provided element', function() { var $food = $(food); var $fruits = $food.find('#fruits'); var $apple = $fruits.find('.apple'); expect($.contains($food[0], $fruits[0])).to.equal(true); expect($.contains($food[0], $apple[0])).to.equal(true); }); it('(container, other) : should not detect elements that are not contained', function() { var $food = $(food); var $fruits = $food.find('#fruits'); var $vegetables = $food.find('#vegetables'); var $apple = $fruits.find('.apple'); expect($.contains($vegetables[0], $apple[0])).to.equal(false); expect($.contains($fruits[0], $vegetables[0])).to.equal(false); expect($.contains($vegetables[0], $fruits[0])).to.equal(false); expect($.contains($fruits[0], $fruits[0])).to.equal(false); expect($.contains($vegetables[0], $vegetables[0])).to.equal(false); }); }); });