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/**
* Jasmine RequestAnimationFrame: a set of helpers for testing funcionality
* that uses requestAnimationFrame under the Jasmine BDD framework for JavaScript.
*/
;(function () {
var index = 0
var callbacks = []
function MockRAF (global) {
this.realRAF = global.requestAnimationFrame
this.realCAF = global.cancelAnimationFrame
this.realPerf = global.performance
this.nextTime = 0
var _this = this
/**
* Mock for window.requestAnimationFrame
*/
this.mockRAF = function (fn) {
if (typeof fn !== 'function') {
throw new Error('You should pass a function to requestAnimationFrame')
}
callbacks[index++] = fn
return index
}
/**
* Mock for window.cancelAnimationFrame
*/
this.mockCAF = function (requestID) {
callbacks.splice(requestID, 1)
}
this.mockPerf = {
now: function () {
return _this.nextTime
}
}
/**
* Install request animation frame mocks.
*/
this.install = function () {
global.requestAnimationFrame = _this.mockRAF
global.cancelAnimationFrame = _this.mockCAF
global.performance = _this.mockPerf
}
/**
* Uninstall request animation frame mocks.
*/
this.uninstall = function () {
global.requestAnimationFrame = _this.realRAF
global.cancelAnimationFrame = _this.realCAF
global.performance = _this.realPerf
_this.nextTime = 0
callbacks = []
}
/**
* Simulate animation frame readiness.
*/
this.tick = function (dt) {
_this.nextTime += (dt || 1)
var fns = callbacks; var fn; var i
callbacks = []
index = 0
for (i in fns) {
fn = fns[i]
fn(_this.nextTime)
}
}
}
jasmine.RequestAnimationFrame = new MockRAF(window)
}())
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