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var delegate = require('../src/delegate');
var simulant = require('simulant');
describe('delegate', function() {
before(function() {
var html = '<ul>' +
'<li><a>Item 1</a></li>' +
'<li><a>Item 2</a></li>' +
'<li><a>Item 3</a></li>' +
'<li><a>Item 4</a></li>' +
'<li><a>Item 5</a></li>' +
'</ul>';
document.body.innerHTML += html;
global.container = document.querySelector('ul');
global.anchor = document.querySelector('a');
global.spy = sinon.spy(global.container, 'removeEventListener');
});
after(function() {
global.spy.restore();
document.body.innerHTML = '';
});
it('should add an event listener', function(done) {
delegate(global.container, 'a', 'click', function() {
done();
});
simulant.fire(global.anchor, simulant('click'));
});
it('should remove an event listener', function() {
var delegation = delegate(global.container, 'a', 'click', function() {});
delegation.destroy();
assert.ok(global.spy.calledOnce);
});
it('should use `document` if the element is unspecified', function(done) {
delegate('a', 'click', function() {
done();
});
simulant.fire(global.anchor, simulant('click'));
});
it('should remove an event listener the unspecified base (`document`)', function() {
var delegation = delegate('a', 'click', function() {});
var spy = sinon.spy(document, 'removeEventListener');
delegation.destroy();
assert.ok(spy.calledOnce);
spy.restore();
});
it('should add event listeners to all the elements in a base selector', function() {
var spy = sinon.spy();
delegate('li', 'a', 'click', spy);
var anchors = document.querySelectorAll('a');
simulant.fire(anchors[0], simulant('click'));
simulant.fire(anchors[1], simulant('click'));
assert.ok(spy.calledTwice);
});
it('should remove the event listeners from all the elements in a base selector', function() {
var items = document.querySelectorAll('li')
var spies = Array.prototype.map.call(items, function (li) {
return sinon.spy(li, 'removeEventListener');
});
var delegations = delegate('li', 'a', 'click', function() {});
delegations.forEach(function (delegation) {
delegation.destroy();
});
spies.every(function (spy) {
var success = spy.calledOnce;
spy.restore();
return success;
});
});
it('should add event listeners to all the elements in a base array', function() {
var spy = sinon.spy();
var items = document.querySelectorAll('li')
delegate(items, 'a', 'click', spy);
var anchors = document.querySelectorAll('a')
simulant.fire(anchors[0], simulant('click'));
simulant.fire(anchors[1], simulant('click'));
assert.ok(spy.calledTwice);
});
it('should remove the event listeners from all the elements in a base array', function() {
var items = document.querySelectorAll('li')
var spies = Array.prototype.map.call(items, function (li) {
return sinon.spy(li, 'removeEventListener');
});
var delegations = delegate(items, 'a', 'click', function() {});
delegations.forEach(function (delegation) {
delegation.destroy();
});
spies.every(function (spy) {
var success = spy.calledOnce;
spy.restore();
return success;
});
});
});