Website/node_modules/cheerio/test/cheerio.js
2015-12-03 19:57:30 -05:00

341 lines
11 KiB
JavaScript

var expect = require('expect.js'),
_ = require('lodash'),
htmlparser2 = require('htmlparser2'),
$ = require('../'),
fixtures = require('./fixtures'),
fruits = fixtures.fruits,
food = fixtures.food;
// HTML
var script = '<script src="script.js" type="text/javascript"></script>',
multiclass = '<p><a class="btn primary" href="#">Save</a></p>';
describe('cheerio', function() {
it('should get the version', function() {
expect(/\d+\.\d+\.\d+/.test($.version)).to.be.ok();
});
it('$(null) should return be empty', function() {
expect($(null)).to.be.empty();
});
it('$(undefined) should be empty', function() {
expect($(undefined)).to.be.empty();
});
it('$(null) should be empty', function() {
expect($('')).to.be.empty();
});
it('$(selector) with no context or root should be empty', function() {
expect($('.h2')).to.be.empty();
expect($('#fruits')).to.be.empty();
});
it('$(node) : should override previously-loaded nodes', function() {
var C = $.load('<div><span></span></div>');
var spanNode = C('span')[0];
var $span = C(spanNode);
expect($span[0]).to.equal(spanNode);
});
it('should be able to create html without a root or context', function() {
var $h2 = $('<h2>');
expect($h2).to.not.be.empty();
expect($h2).to.have.length(1);
expect($h2[0].tagName).to.equal('h2');
});
it('should be able to create complicated html', function() {
var $script = $(script);
expect($script).to.not.be.empty();
expect($script).to.have.length(1);
expect($script[0].attribs.src).to.equal('script.js');
expect($script[0].attribs.type).to.equal('text/javascript');
expect($script[0].childNodes).to.be.empty();
});
var testAppleSelect = function($apple) {
expect($apple).to.have.length(1);
$apple = $apple[0];
expect($apple.parentNode.tagName).to.equal('ul');
expect($apple.prev).to.be(null);
expect($apple.next.attribs['class']).to.equal('orange');
expect($apple.childNodes).to.have.length(1);
expect($apple.childNodes[0].data).to.equal('Apple');
};
it('should be able to select .apple with only a context', function() {
var $apple = $('.apple', fruits);
testAppleSelect($apple);
});
it('should be able to select .apple with a node as context', function() {
var $apple = $('.apple', $(fruits)[0]);
testAppleSelect($apple);
});
it('should be able to select .apple with only a root', function() {
var $apple = $('.apple', null, fruits);
testAppleSelect($apple);
});
it('should be able to select an id', function() {
var $fruits = $('#fruits', null, fruits);
expect($fruits).to.have.length(1);
expect($fruits[0].attribs.id).to.equal('fruits');
});
it('should be able to select a tag', function() {
var $ul = $('ul', fruits);
expect($ul).to.have.length(1);
expect($ul[0].tagName).to.equal('ul');
});
it('should accept a node reference as a context', function() {
var $elems = $('<div><span></span></div>');
expect($('span', $elems[0])).to.have.length(1);
});
it('should accept an array of node references as a context', function() {
var $elems = $('<div><span></span></div>');
expect($('span', $elems.toArray())).to.have.length(1);
});
it('should select only elements inside given context (Issue #193)', function() {
var q = $.load(food),
fruits = q('#fruits'),
fruitElements = q('li', fruits);
expect(fruitElements).to.have.length(3);
});
it('should be able to select multiple tags', function() {
var $fruits = $('li', null, fruits);
expect($fruits).to.have.length(3);
var classes = ['apple', 'orange', 'pear'];
$fruits.each(function(idx, $fruit) {
expect($fruit.attribs['class']).to.equal(classes[idx]);
});
});
it('should be able to do: $("#fruits .apple")', function() {
var $apple = $('#fruits .apple', fruits);
testAppleSelect($apple);
});
it('should be able to do: $("li.apple")', function() {
var $apple = $('li.apple', fruits);
testAppleSelect($apple);
});
it('should be able to select by attributes', function() {
var $apple = $('li[class=apple]', fruits);
testAppleSelect($apple);
});
it('should be able to select multiple classes: $(".btn.primary")', function() {
var $a = $('.btn.primary', multiclass);
expect($a).to.have.length(1);
expect($a[0].childNodes[0].data).to.equal('Save');
});
it('should not create a top-level node', function() {
var $elem = $('* div', '<div>');
expect($elem).to.have.length(0);
});
it('should be able to select multiple elements: $(".apple, #fruits")', function() {
var $elems = $('.apple, #fruits', fruits);
expect($elems).to.have.length(2);
var $apple = _.filter($elems, function(elem) {
return elem.attribs['class'] === 'apple';
});
var $fruits = _.filter($elems, function(elem) {
return elem.attribs.id === 'fruits';
});
testAppleSelect($apple);
expect($fruits[0].attribs.id).to.equal('fruits');
});
it('should select first element $(:first)');
// var $elem = $(':first', fruits);
// var $h2 = $('<h2>fruits</h2>');
// console.log($elem.before('hi'));
// console.log($elem.before($h2));
it('should be able to select immediate children: $("#fruits > .pear")', function() {
var $food = $(food);
$('.pear', $food).append('<li class="pear">Another Pear!</li>');
expect($('#fruits .pear', $food)).to.have.length(2);
var $elem = $('#fruits > .pear', $food);
expect($elem).to.have.length(1);
expect($elem.attr('class')).to.equal('pear');
});
it('should be able to select immediate children: $(".apple + .pear")', function() {
var $elem = $('.apple + li', fruits);
expect($elem).to.have.length(1);
$elem = $('.apple + .pear', fruits);
expect($elem).to.have.length(0);
$elem = $('.apple + .orange', fruits);
expect($elem).to.have.length(1);
expect($elem.attr('class')).to.equal('orange');
});
it('should be able to select immediate children: $(".apple ~ .pear")', function() {
var $elem = $('.apple ~ li', fruits);
expect($elem).to.have.length(2);
$elem = $('.apple ~ .pear', fruits);
expect($elem.attr('class')).to.equal('pear');
});
it('should handle wildcards on attributes: $("li[class*=r]")', function() {
var $elem = $('li[class*=r]', fruits);
expect($elem).to.have.length(2);
expect($elem.eq(0).attr('class')).to.equal('orange');
expect($elem.eq(1).attr('class')).to.equal('pear');
});
it('should handle beginning of attr selectors: $("li[class^=o]")', function() {
var $elem = $('li[class^=o]', fruits);
expect($elem).to.have.length(1);
expect($elem.eq(0).attr('class')).to.equal('orange');
});
it('should handle beginning of attr selectors: $("li[class$=e]")', function() {
var $elem = $('li[class$=e]', fruits);
expect($elem).to.have.length(2);
expect($elem.eq(0).attr('class')).to.equal('apple');
expect($elem.eq(1).attr('class')).to.equal('orange');
});
it('should gracefully degrade on complex, unmatched queries', function() {
var $elem = $('Eastern States Cup #8-fin&nbsp;<br>Downhill&nbsp;');
expect($elem).to.have.length(0); // []
});
it('(extended Array) should not interfere with prototype methods (issue #119)', function() {
var extended = [];
extended.find = extended.children = extended.each = function() {};
var $empty = $(extended);
expect($empty.find).to.be($.prototype.find);
expect($empty.children).to.be($.prototype.children);
expect($empty.each).to.be($.prototype.each);
});
describe('.load', function() {
it('should generate selections as proper instances', function() {
var q = $.load(fruits);
expect(q('.apple')).to.be.a(q);
});
it('should be able to filter down using the context', function() {
var q = $.load(fruits),
apple = q('.apple', 'ul'),
lis = q('li', 'ul');
expect(apple).to.have.length(1);
expect(lis).to.have.length(3);
});
it('should allow loading a pre-parsed DOM', function() {
var dom = htmlparser2.parseDOM(food),
q = $.load(dom);
expect(q('ul')).to.have.length(3);
});
it('should render xml in html() when options.xmlMode = true', function() {
var str = '<MixedCaseTag UPPERCASEATTRIBUTE=""></MixedCaseTag>',
expected = '<MixedCaseTag UPPERCASEATTRIBUTE=""/>',
dom = $.load(str, {xmlMode: true});
expect(dom('MixedCaseTag').get(0).tagName).to.equal('MixedCaseTag');
expect(dom.html()).to.be(expected);
});
it('should render xml in html() when options.xmlMode = true passed to html()', function() {
var str = '<MixedCaseTag UPPERCASEATTRIBUTE=""></MixedCaseTag>',
// since parsing done without xmlMode flag, all tags converted to lowercase
expectedXml = '<mixedcasetag uppercaseattribute=""/>',
expectedNoXml = '<mixedcasetag uppercaseattribute=""></mixedcasetag>',
dom = $.load(str);
expect(dom('MixedCaseTag').get(0).tagName).to.equal('mixedcasetag');
expect(dom.html()).to.be(expectedNoXml);
expect(dom.html({xmlMode: true})).to.be(expectedXml);
});
it('should respect options on the element level', function() {
var str = '<!doctype html><html><head><title>Some test</title></head><body><footer><p>Copyright &copy; 2003-2014</p></footer></body></html>',
expectedHtml = '<p>Copyright &copy; 2003-2014</p>',
expectedXml = '<p>Copyright &#xA9; 2003-2014</p>',
domNotEncoded = $.load(str, {decodeEntities: false}),
domEncoded = $.load(str);
expect(domNotEncoded('footer').html()).to.be(expectedHtml);
// TODO: Make it more html friendly, maybe with custom encode tables
expect(domEncoded('footer').html()).to.be(expectedXml);
});
it('should return a fully-qualified Function', function() {
var $c = $.load('<div>');
expect($c).to.be.a(Function);
});
describe('prototype extensions', function() {
it('should honor extensions defined on `prototype` property', function() {
var $c = $.load('<div>');
var $div;
$c.prototype.myPlugin = function() {
return {
context: this,
args: arguments
};
};
$div = $c('div');
expect($div.myPlugin).to.be.a('function');
expect($div.myPlugin().context).to.be($div);
expect(Array.prototype.slice.call($div.myPlugin(1, 2, 3).args))
.to.eql([1, 2, 3]);
});
it('should honor extensions defined on `fn` property', function() {
var $c = $.load('<div>');
var $div;
$c.fn.myPlugin = function() {
return {
context: this,
args: arguments
};
};
$div = $c('div');
expect($div.myPlugin).to.be.a('function');
expect($div.myPlugin().context).to.be($div);
expect(Array.prototype.slice.call($div.myPlugin(1, 2, 3).args))
.to.eql([1, 2, 3]);
});
it('should isolate extensions between loaded functions', function() {
var $a = $.load('<div>');
var $b = $.load('<div>');
$a.prototype.foo = function() {};
expect($b('div').foo).to.be(undefined);
});
});
});
});