var expect = require('expect.js'), $ = require('../'), food = require('./fixtures').food, fruits = require('./fixtures').fruits, drinks = require('./fixtures').drinks, text = require('./fixtures').text; describe('$(...)', function() { describe('.find', function() { it('() : should find nothing', function() { expect($('ul', fruits).find()).to.have.length(0); }); it('(single) : should find one descendant', function() { expect($('#fruits', fruits).find('.apple')[0].attribs['class']).to.equal('apple'); }); it('(many) : should find all matching descendant', function() { expect($('#fruits', fruits).find('li')).to.have.length(3); }); it('(many) : should merge all selected elems with matching descendants', function() { expect($('#fruits, #food', food).find('.apple')).to.have.length(1); }); it('(invalid single) : should return empty if cant find', function() { expect($('ul', fruits).find('blah')).to.have.length(0); }); it('(invalid single) : should query descendants only', function() { expect($('#fruits', fruits).find('ul')).to.have.length(0); }); it('should return empty if search already empty result', function() { expect($('#fruits').find('li')).to.have.length(0); }); it('should throw a SyntaxError if given an invalid selector', function() { expect(function() { $('#fruits').find(':bah'); }).to.throwException(function(err) { expect(err).to.be.a(SyntaxError); }); }); }); describe('.children', function() { it('() : should get all children', function() { expect($('ul', fruits).children()).to.have.length(3); }); it('() : should return children of all matched elements', function() { expect($('ul ul', food).children()).to.have.length(5); }); it('(selector) : should return children matching selector', function() { var cls = $('ul', fruits).children('.orange')[0].attribs['class']; expect(cls).to.equal('orange'); }); it('(invalid selector) : should return empty', function() { expect($('ul', fruits).children('.lulz')).to.have.length(0); }); it('should only match immediate children, not ancestors', function() { expect($(food).children('li')).to.have.length(0); }); }); describe('.contents', function() { it('() : should get all contents', function() { expect($('p', text).contents()).to.have.length(5); }); it('() : should include text nodes', function() { expect($('p', text).contents().first()[0].type).to.equal('text'); }); it('() : should include comment nodes', function() { expect($('p', text).contents().last()[0].type).to.equal('comment'); }); }); describe('.next', function() { it('() : should return next element', function() { var cls = $('.orange', fruits).next()[0].attribs['class']; expect(cls).to.equal('pear'); }); it('(no next) : should return empty for last child', function() { expect($('.pear', fruits).next()).to.have.length(0); }); it('(next on empty object) : should return empty', function() { expect($('.banana', fruits).next()).to.have.length(0); }); it('() : should operate over all elements in the selection', function() { expect($('.apple, .orange', food).next()).to.have.length(2); }); }); describe('.nextAll', function() { it('() : should return all following siblings', function() { var elems = $('.apple', fruits).nextAll(); expect(elems).to.have.length(2); expect(elems[0].attribs['class']).to.equal('orange'); expect(elems[1].attribs['class']).to.equal('pear'); }); it('(no next) : should return empty for last child', function() { expect($('.pear', fruits).nextAll()).to.have.length(0); }); it('(nextAll on empty object) : should return empty', function() { expect($('.banana', fruits).nextAll()).to.have.length(0); }); it('() : should operate over all elements in the selection', function() { expect($('.apple, .carrot', food).nextAll()).to.have.length(3); }); it('() : should not contain duplicate elements', function() { var elems = $('.apple, .orange', food); expect(elems.nextAll()).to.have.length(2); }); }); describe('.nextUntil', function() { it('() : should return all following siblings if no selector specified', function() { var elems = $('.apple', food).nextUntil(); expect(elems).to.have.length(2); expect(elems[0].attribs['class']).to.equal('orange'); expect(elems[1].attribs['class']).to.equal('pear'); }); it('() : should filter out non-element nodes', function() { var elems = $('
text
'); var div = elems.children().eq(0); expect(div.nextUntil()).to.have.length(1); }); it('() : should operate over all elements in the selection', function() { var elems = $('.apple, .carrot', food); expect(elems.nextUntil()).to.have.length(3); }); it('() : should not contain duplicate elements', function() { var elems = $('.apple, .orange', food); expect(elems.nextUntil()).to.have.length(2); }); it('(selector) : should return all following siblings until selector', function() { var elems = $('.apple', food).nextUntil('.pear'); expect(elems).to.have.length(1); expect(elems[0].attribs['class']).to.equal('orange'); }); it('(selector not sibling) : should return all following siblings', function() { var elems = $('.apple', fruits).nextUntil('#vegetables'); expect(elems).to.have.length(2); }); it('(selector, filterString) : should return all following siblings until selector, filtered by filter', function() { var elems = $('.beer', drinks).nextUntil('.water', '.milk'); expect(elems).to.have.length(1); expect(elems[0].attribs['class']).to.equal('milk'); }); it('() : should return an empty object for last child', function() { expect($('.pear', fruits).nextUntil()).to.have.length(0); }); it('() : should return an empty object when called on an empty object', function() { expect($('.banana', fruits).nextUntil()).to.have.length(0); }); it('(node) : should return all following siblings until the node', function() { var $fruits = $(fruits).children(); var elems = $fruits.eq(0).nextUntil($fruits[2]); expect(elems).to.have.length(1); }); it('(cheerio object) : should return all following siblings until any member of the cheerio object', function() { var $drinks = $(drinks).children(); var $until = $([$drinks[4], $drinks[3]]); var elems = $drinks.eq(0).nextUntil($until); expect(elems).to.have.length(2); }); }); describe('.prev', function() { it('() : should return previous element', function() { var cls = $('.orange', fruits).prev()[0].attribs['class']; expect(cls).to.equal('apple'); }); it('(no prev) : should return empty for first child', function() { expect($('.apple', fruits).prev()).to.have.length(0); }); it('(prev on empty object) : should return empty', function() { expect($('.banana', fruits).prev()).to.have.length(0); }); it('() : should operate over all elements in the selection', function() { expect($('.orange, .pear', food).prev()).to.have.length(2); }); }); describe('.prevAll', function() { it('() : should return all preceding siblings', function() { var elems = $('.pear', fruits).prevAll(); expect(elems).to.have.length(2); expect(elems[0].attribs['class']).to.equal('orange'); expect(elems[1].attribs['class']).to.equal('apple'); }); it('(no prev) : should return empty for first child', function() { expect($('.apple', fruits).prevAll()).to.have.length(0); }); it('(prevAll on empty object) : should return empty', function() { expect($('.banana', fruits).prevAll()).to.have.length(0); }); it('() : should operate over all elements in the selection', function() { expect($('.orange, .sweetcorn', food).prevAll()).to.have.length(2); }); it('() : should not contain duplicate elements', function() { var elems = $('.orange, .pear', food); expect(elems.prevAll()).to.have.length(2); }); }); describe('.prevUntil', function() { it('() : should return all preceding siblings if no selector specified', function() { var elems = $('.pear', fruits).prevUntil(); expect(elems).to.have.length(2); expect(elems[0].attribs['class']).to.equal('orange'); expect(elems[1].attribs['class']).to.equal('apple'); }); it('() : should filter out non-element nodes', function() { var elems = $('
text
'); var div = elems.children().last(); expect(div.prevUntil()).to.have.length(1); }); it('() : should operate over all elements in the selection', function() { var elems = $('.pear, .sweetcorn', food); expect(elems.prevUntil()).to.have.length(3); }); it('() : should not contain duplicate elements', function() { var elems = $('.orange, .pear', food); expect(elems.prevUntil()).to.have.length(2); }); it('(selector) : should return all preceding siblings until selector', function() { var elems = $('.pear', fruits).prevUntil('.apple'); expect(elems).to.have.length(1); expect(elems[0].attribs['class']).to.equal('orange'); }); it('(selector not sibling) : should return all preceding siblings', function() { var elems = $('.sweetcorn', food).prevUntil('#fruits'); expect(elems).to.have.length(1); expect(elems[0].attribs['class']).to.equal('carrot'); }); it('(selector, filterString) : should return all preceding siblings until selector, filtered by filter', function() { var elems = $('.cider', drinks).prevUntil('.juice', '.water'); expect(elems).to.have.length(1); expect(elems[0].attribs['class']).to.equal('water'); }); it('() : should return an empty object for first child', function() { expect($('.apple', fruits).prevUntil()).to.have.length(0); }); it('() : should return an empty object when called on an empty object', function() { expect($('.banana', fruits).prevUntil()).to.have.length(0); }); it('(node) : should return all previous siblings until the node', function() { var $fruits = $(fruits).children(); var elems = $fruits.eq(2).prevUntil($fruits[0]); expect(elems).to.have.length(1); }); it('(cheerio object) : should return all previous siblings until any member of the cheerio object', function() { var $drinks = $(drinks).children(); var $until = $([$drinks[0], $drinks[1]]); var elems = $drinks.eq(4).prevUntil($until); expect(elems).to.have.length(2); }); }); describe('.siblings', function() { it('() : should get all the siblings', function() { expect($('.orange', fruits).siblings()).to.have.length(2); expect($('#fruits', fruits).siblings()).to.have.length(0); expect($('.apple, .carrot', food).siblings()).to.have.length(3); }); it('(selector) : should get all siblings that match the selector', function() { expect($('.orange', fruits).siblings('.apple')).to.have.length(1); expect($('.orange', fruits).siblings('.peach')).to.have.length(0); }); it('(selector) : should throw a SyntaxError if given an invalid selector', function() { expect(function() { $('.orange', fruits).siblings(':bah'); }).to.throwException(function(err) { expect(err).to.be.a(SyntaxError); }); }); }); describe('.parents', function() { it('() : should get all of the parents in logical order', function(){ var result = $('.orange', food).parents(); expect(result).to.have.length(2); expect(result[0].attribs.id).to.be('fruits'); expect(result[1].attribs.id).to.be('food'); result = $('#fruits', food).parents(); expect(result).to.have.length(1); expect(result[0].attribs.id).to.be('food'); }); it('(selector) : should get all of the parents that match the selector in logical order', function() { var result = $('.orange', food).parents('#fruits'); expect(result).to.have.length(1); expect(result[0].attribs.id).to.be('fruits'); result = $('.orange', food).parents('ul'); expect(result).to.have.length(2); expect(result[0].attribs.id).to.be('fruits'); expect(result[1].attribs.id).to.be('food'); }); it('() : should not break if the selector does not have any results', function() { var result = $('.saladbar', food).parents(); expect(result).to.have.length(0); }); it('() : should return an empty set for top-level elements', function() { var result = $('#food', food).parents(); expect(result).to.have.length(0); }); it('() : should return the parents of every element in the *reveresed* collection, omitting duplicates', function() { var $food = $(food); var $parents = $food.find('li').parents(); expect($parents).to.have.length(3); expect($parents[0]).to.be($food.find('#vegetables')[0]); expect($parents[1]).to.be($food[0]); expect($parents[2]).to.be($food.find('#fruits')[0]); }); }); describe('.parent', function() { it('() : should return the parent of each matched element', function() { var result = $('.orange', fruits).parent(); expect(result).to.have.length(1); expect(result[0].attribs.id).to.be('fruits'); result = $('li', food).parent(); expect(result).to.have.length(2); expect(result[0].attribs.id).to.be('fruits'); expect(result[1].attribs.id).to.be('vegetables'); }); it('() : should return an empty object for top-level elements', function() { var result = $('ul', fruits).parent(); expect(result).to.have.length(0); }); it('() : should not contain duplicate elements', function() { var result = $('li', fruits).parent(); expect(result).to.have.length(1); }); it('(selector) : should filter the matched parent elements by the selector', function() { var result = $('.orange', fruits).parent(); expect(result).to.have.length(1); expect(result[0].attribs.id).to.be('fruits'); result = $('li', food).parent('#fruits'); expect(result).to.have.length(1); expect(result[0].attribs.id).to.be('fruits'); }); }); describe('.closest', function() { it('() : should return an empty array', function() { var result = $('.orange', fruits).closest(); expect(result).to.have.length(0); expect(result).to.be.a($); }); it('(selector) : should find the closest element that matches the selector, searching through its ancestors and itself', function() { expect($('.orange', fruits).closest('.apple')).to.have.length(0); var result = $('.orange', food).closest('#food'); expect(result[0].attribs.id).to.be('food'); result = $('.orange', food).closest('ul'); expect(result[0].attribs.id).to.be('fruits'); result = $('.orange', food).closest('li'); expect(result[0].attribs['class']).to.be('orange'); }); it('(selector) : should find the closest element of each item, removing duplicates', function() { var result = $('li', food).closest('ul'); expect(result).to.have.length(2); }); it('() : should not break if the selector does not have any results', function() { var result = $('.saladbar', food).closest('ul'); expect(result).to.have.length(0); }); }); describe('.each', function() { it('( (i, elem) -> ) : should loop selected returning fn with (i, elem)', function() { var items = [], classes = ['apple', 'orange', 'pear']; $('li', fruits).each(function(idx, elem) { items[idx] = elem; expect(this[0].attribs['class']).to.equal(classes[idx]); }); expect(items[0].attribs['class']).to.equal('apple'); expect(items[1].attribs['class']).to.equal('orange'); expect(items[2].attribs['class']).to.equal('pear'); }); it('( (i, elem) -> ) : should break iteration when the iterator function returns false', function() { var iterationCount = 0; $('li', fruits).each(function(idx, elem) { iterationCount++; return idx < 1; }); expect(iterationCount).to.equal(2); }); }); describe('.map', function() { it('(fn) : should be invoked with the correct arguments and context', function() { var $fruits = $('li', fruits); var args = []; var thisVals = []; $fruits.map(function() { args.push(arguments); thisVals.push(this); }); expect(args).to.eql([ [0, $fruits[0]], [1, $fruits[1]], [2, $fruits[2]] ]); expect(thisVals).to.eql([ $fruits[0], $fruits[1], $fruits[2] ]); }); it('(fn) : should return an Cheerio object wrapping the returned items', function() { var $fruits = $('li', fruits); var $mapped = $fruits.map(function(i, el) { return $fruits[2 - i]; }); expect($mapped).to.have.length(3); expect($mapped[0]).to.be($fruits[2]); expect($mapped[1]).to.be($fruits[1]); expect($mapped[2]).to.be($fruits[0]); }); it('(fn) : should ignore `null` and `undefined` returned by iterator', function() { var $fruits = $('li', fruits); var retVals = [null, undefined, $fruits[1]]; var $mapped = $fruits.map(function(i, el) { return retVals[i]; }); expect($mapped).to.have.length(1); expect($mapped[0]).to.be($fruits[1]); }); it('(fn) : should preform a shallow merge on arrays returned by iterator', function() { var $fruits = $('li', fruits); var $mapped = $fruits.map(function(i, el) { return [1, [3, 4]]; }); expect($mapped.toArray()).to.eql([ 1, [3, 4], 1, [3, 4], 1, [3, 4] ]); }); it('(fn) : should tolerate `null` and `undefined` when flattening arrays returned by iterator', function() { var $fruits = $('li', fruits); var $mapped = $fruits.map(function(i, el) { return [null, undefined]; }); expect($mapped.toArray()).to.eql([ null, undefined, null, undefined, null, undefined, ]); }); }); describe('.filter', function() { it('(selector) : should reduce the set of matched elements to those that match the selector', function() { var pear = $('li', fruits).filter('.pear').text(); expect(pear).to.be('Pear'); }); it('(selector) : should not consider nested elements', function() { var lis = $(fruits).filter('li'); expect(lis).to.have.length(0); }); it('(selection) : should reduce the set of matched elements to those that are contained in the provided selection', function() { var $fruits = $('li', fruits); var $pear = $fruits.filter('.pear, .apple'); expect($fruits.filter($pear)).to.have.length(2); }); it('(element) : should reduce the set of matched elements to those that specified directly', function() { var $fruits = $('li', fruits); var pear = $fruits.filter('.pear')[0]; expect($fruits.filter(pear)).to.have.length(1); }); it('(fn) : should reduce the set of matched elements to those that pass the function\'s test', function() { var orange = $('li', fruits).filter(function(i, el) { expect(this[0]).to.be(el); expect(el.name).to.be('li'); expect(i).to.be.a('number'); return this.attr('class') === 'orange'; }).text(); expect(orange).to.be('Orange'); }); }); describe('.first', function() { it('() : should return the first item', function() { var $src = $('foobarbaz'); var $elem = $src.first(); expect($elem.length).to.equal(1); expect($elem[0].children[0].data).to.equal('foo'); }); it('() : should return an empty object for an empty object', function() { var $src = $(); var $first = $src.first(); expect($first.length).to.equal(0); expect($first[0]).to.be(undefined); }); }); describe('.last', function() { it('() : should return the last element', function() { var $src = $('foobarbaz'); var $elem = $src.last(); expect($elem.length).to.equal(1); expect($elem[0].children[0].data).to.equal('baz'); }); it('() : should return an empty object for an empty object', function() { var $src = $(); var $last = $src.last(); expect($last.length).to.equal(0); expect($last[0]).to.be(undefined); }); }); describe('.first & .last', function() { it('() : should return equivalent collections if only one element', function() { var $src = $('bar'); var $first = $src.first(); var $last = $src.last(); expect($first.length).to.equal(1); expect($first[0].children[0].data).to.equal('bar'); expect($last.length).to.equal(1); expect($last[0].children[0].data).to.equal('bar'); expect($first[0]).to.equal($last[0]); }); }); describe('.eq', function() { function getText(el) { if(!el.length) return ''; return el[0].children[0].data; } it('(i) : should return the element at the specified index', function() { expect(getText($('li', fruits).eq(0))).to.equal('Apple'); expect(getText($('li', fruits).eq(1))).to.equal('Orange'); expect(getText($('li', fruits).eq(2))).to.equal('Pear'); expect(getText($('li', fruits).eq(3))).to.equal(''); expect(getText($('li', fruits).eq(-1))).to.equal('Pear'); }); }); describe('.slice', function() { function getText(el) { if(!el.length) return ''; return el[0].children[0].data; } it('(start) : should return all elements after the given index', function() { var sliced = $('li', fruits).slice(1); expect(sliced).to.have.length(2); expect(getText(sliced.eq(0))).to.equal('Orange'); expect(getText(sliced.eq(1))).to.equal('Pear'); }); it('(start, end) : should return all elements matching the given range', function() { var sliced = $('li', fruits).slice(1, 2); expect(sliced).to.have.length(1); expect(getText(sliced.eq(0))).to.equal('Orange'); }); it('(-start) : should return element matching the offset from the end', function() { var sliced = $('li', fruits).slice(-1); expect(sliced).to.have.length(1); expect(getText(sliced.eq(0))).to.equal('Pear'); }); }); describe('.end() :', function() { var $fruits = $(fruits).children(); it('returns an empty object at the end of the chain', function() { expect($fruits.end().end()).to.be.ok(); expect($fruits.end().end()).to.have.length(0); }); it('find', function() { expect($fruits.find('.apple').end()).to.be($fruits); }); it('filter', function() { expect($fruits.filter('.apple').end()).to.be($fruits); }); it('map', function() { expect($fruits.map(function() { return this; }).end()).to.be($fruits); }); it('contents', function() { expect($fruits.contents().end()).to.be($fruits); }); it('eq', function() { expect($fruits.eq(1).end()).to.be($fruits); }); it('first', function() { expect($fruits.first().end()).to.be($fruits); }); it('last', function() { expect($fruits.last().end()).to.be($fruits); }); it('slice', function() { expect($fruits.slice(1).end()).to.be($fruits); }); it('children', function() { expect($fruits.children().end()).to.be($fruits); }); it('parent', function() { expect($fruits.parent().end()).to.be($fruits); }); it('parents', function() { expect($fruits.parents().end()).to.be($fruits); }); it('closest', function() { expect($fruits.closest('ul').end()).to.be($fruits); }); it('siblings', function() { expect($fruits.siblings().end()).to.be($fruits); }); it('next', function() { expect($fruits.next().end()).to.be($fruits); }); it('nextAll', function() { expect($fruits.nextAll().end()).to.be($fruits); }); it('prev', function() { expect($fruits.prev().end()).to.be($fruits); }); it('prevAll', function() { expect($fruits.prevAll().end()).to.be($fruits); }); it('clone', function() { expect($fruits.clone().end()).to.be($fruits); }); }); });