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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,
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, fn, i;
callbacks = [];
index = 0;
for (i in fns) {
fn = fns[i];
fn(_this.nextTime);
}
};
}
jasmine.RequestAnimationFrame = new MockRAF(window);
}());
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