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event-object-test.js
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event-object-test.js
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/*global bean:true, qwery:true, buster:true, Syn:true, assert:true, defer:true, features:true, globalSetUp:true, globalTearDown:true*/
buster.testCase('event object', {
'setUp': globalSetUp
, 'tearDown': globalTearDown
, 'should have correct target': function (done) {
var el1 = this.byId('foo')
, el2 = this.byId('bar')
, trigger = this.trigger()
, spy = this.spy()
bean.add(el1, 'click', trigger.wrap(spy))
Syn.click(el2)
trigger.after(function() {
assert(spy.calledOnce, 'called once')
assert(spy.firstCall.args.length, 'has argument')
assert.same(spy.firstCall.args[0].target, el2, 'event object has correct property')
done()
})
}
, 'event object': {
'setUp': function () {
var self = this
this.runTest = function (custom, done, verifyFn) {
var el = self.byId('foo')
, trigger = self.trigger()
, spy = self.spy()
trigger.after(function() {
assert(spy.calledOnce, 'called once')
assert(spy.firstCall.args.length, 'has argument')
verifyFn(spy.firstCall.args[0])
done()
})
bean.add(el, custom ? 'customEvent' : 'click', trigger.wrap(spy))
if (custom)
bean.fire(el, 'customEvent')
else
Syn.click(el)
}
}
, 'should have stopPropagation method': function (done) {
this.runTest(false, done, function (event) {
assert.isFunction(event.stopPropagation, 'event object has stopPropagation method')
})
}
, 'should have preventDefault method': function (done) {
this.runTest(false, done, function (event) {
assert.isFunction(event.preventDefault, 'event object has preventDefault method')
})
}
, 'should have stopPropagation method on custom event': function (done) {
this.runTest(true, done, function (event) {
assert.isFunction(event.stopPropagation, 'event object has stopPropagation method')
})
}
, 'should have preventDefault method on custom event': function (done) {
this.runTest(true, done, function (event) {
assert.isFunction(event.preventDefault, 'event object has preventDefault method')
})
}
}
, 'stop()': {
'setUp': function () {
var self = this
this.runTest = function (delegate, done) {
// we should be able to prevent a keypress and event propagation with stop()
// on the keypress event, checking the parent doesn't receive the keypress
// and then checking the input contents on a keyup, it should be empty.
var txt = self.byId('txt')
, parent = self.byId('stopper')
, fixture = self.byId('fixtures')
, trigger = self.trigger()
, parentSpy = self.spy()
, txtHandler = function (event) {
event.stop()
}
trigger.after(function () {
refute(parentSpy.called, 'parent should not receive event')
refute(txt.value.length, 'input is has no text after keypress')
done()
})
bean.setSelectorEngine(qwery)
txt.value = ''
if (delegate) {
bean.add(parent , '*', 'keypress', trigger.wrap(txtHandler))
bean.add(fixture , 'keypress', trigger.wrap(parentSpy))
} else {
bean.add(txt , 'keypress', trigger.wrap(txtHandler))
bean.add(parent, 'keypress', trigger.wrap(parentSpy))
}
Syn.key(txt, 'f')
}
}
, 'should preventDefault and stopPropagation': function(done) {
this.runTest(false, done)
}
, 'should preventDefault and stopPropagation on delegated events': function (done) {
this.runTest(true, done)
}
}
, 'should have keyCode': function (done) {
var el = this.byId('input')
, trigger = this.trigger()
, spy = this.spy()
trigger.after(function() {
assert(spy.calledOnce, 'called once')
assert(spy.firstCall.args.length, 'has argument')
assert(spy.firstCall.args[0].keyCode, 'event object has keyCode')
done()
})
bean.add(el, 'keypress', trigger.wrap(spy))
Syn.key(el, 'f')
}
// the idea here is that we have a whitelist in bean.js for properties to copy over from the original
// event object (if they exist) to the new synthetic one. But, there are a bunch of browser specific
// properties we don't care about. We list those properties here and then we check to see if there are
// any properties in source event objects that aren't being copied to the new event objects that we
// haven't specifically listed as 'ignorable'. This way we should be able to pick up new event properties
// browsers as they're implemented and then make a decision as to whether they should be copied or not
, 'event object properties': {
'setUp': function () {
var commonIgnorables = ('cancelBubble clipboardData defaultPrevented explicitOriginalTarget getPreventDefault initEvent initUIEvent isChar ' +
'originalTarget preventCapture preventBubble rangeOffset rangeParent returnValue stopImmediatePropagation synthetic initPopStateEvent').split(' ')
// stuff from IE8 and below
, oldIEIgnorables = ('recordset altLeft repeat reason data behaviorCookie source contentOverflow behaviorPart url shiftLeft dataFld ' +
'qualifier wheelDelta bookmarks srcFilter nextPage srcUrn origin boundElements propertyName ctrlLeft state').split(' ')
, clickIgnorables = commonIgnorables.concat(oldIEIgnorables).concat(('charCode defaultPrevented initMouseEvent keyCode layerX layerY ' +
'initNSMouseEvent x y state webkitMovementY webkitMovementX').split(' '))
, oldIEKeyIgnorables = 'fromElement toElement dataTransfer button x y screenX screenY clientX clientY offsetX offsetY state'.split(' ')
, keyIgnorables = commonIgnorables.concat(oldIEIgnorables).concat(oldIEKeyIgnorables).concat('initKeyEvent layerX layerY pageX pageY state'.split(' '))
, el = this.byId('input')
, getEventObject = function (evType, elType, trigger, callback) {
var handler = function (e) {
bean.remove(el)
callback(e)
}
el = elType === window ? elType : el;
bean.add(el, evType, handler)
trigger(el)
}
, contains = function (arr, e) {
var i = arr.length
while (i--) {
if (arr[i] === e) return true
}
return false
}
, verifyEventObject = function (event, type, ignorables) {
var p, orig = event.originalEvent
assert(event, 'has event object')
assert(event.originalEvent, 'has reference to originalEvent')
assert.equals(event.type, type, 'correct event type')
for (p in orig) {
refute(
!event.hasOwnProperty(p)
&& !contains(ignorables, p)
&& !/^[A-Z_\d]+$/.test(p) // STUFF_LIKE_THIS
&& !/^moz[A-Z]/.test(p) // Mozilla prefixed properties
, 'additional, uncopied property: "' + p + '" (may need to be added to event-object-test.js)'
)
}
}
this.testMouseEvent = function (type, syn, done) {
getEventObject(
type
, 'button'
, function (el) { Syn[syn || type](el) }
, function (event) {
verifyEventObject(event, type, clickIgnorables)
done()
}
)
}
this.testStateEvent = function (type, done) {
if (!features.history) {
assert(true, 'no history API in this browser, not testing state events')
return done()
}
getEventObject(
type
, window
, function (el) {
window.history.pushState({}, 'test state', '#test-state')
window.history.go(-1)
}
, function (event) {
try {
verifyEventObject(event, type, commonIgnorables)
} catch (e) { }
done()
}
)
}
this.testKeyEvent = function (type, done) {
getEventObject(
type
, 'input'
, function (el) { Syn.key(el, 'f') }
, function (event) {
verifyEventObject(event, type, keyIgnorables)
done()
}
)
}
}
, 'click: has correct properties': function (done) {
this.testMouseEvent('click', null, done)
}
, 'dblclick: has correct properties': function (done) {
this.testMouseEvent('dblclick', null, done)
}
, 'mousedown: has correct properties': function (done) {
this.testMouseEvent('mousedown', 'click', done)
}
, 'mouseup: has correct properties': function (done) {
this.testMouseEvent('mouseup', 'click', done)
}
, 'popstate: has correct properties': function(done) {
this.testStateEvent('popstate', done)
}
, 'keyup: has correct properties': function (done) {
this.testKeyEvent('keyup', done)
}
, 'keydown: has correct properties': function (done) {
this.testKeyEvent('keydown', done)
}
, 'keypress: has correct properties': function (done) {
this.testKeyEvent('keypress', done)
}
}
})