fix(pauseResume): Fix a script error on stop() (#276)

* fix(pauseResume): Fix a script error on stop()

When you call it on elements which is not animated,
script error occurs because __aniProp is not exist.

Close #276

src/hook/pauseResume.js

@@ -300,6 +300,11 @@ eg.module("pauseResume", ["jQuery"], function($) {
 		return this.each(function() {
 			var p;
 
+			// When this element was not animated properly, do nothing.
+			if (getStatus(this) === "empty") {
+				return;
+			}
+
 			if (!clearQ) {
 				p = this.__aniProps.shift();
 				p && p.clearEasingFn();

test/unit/js/pauseResume.test.js

@@ -10,13 +10,44 @@ QUnit.config.reorder = false;
 var hooks = {
 	beforeEach: function() {
 		this.$el = $("#box1");
+		delete this.$el[0].__aniProps;
 	},
 	afterEach: function() {
 		this.$el.css({"left": 0});
 	}
 };
 
 module("Initialization", hooks);
+
+test("stop on non-animated element", function(assert) {
+	// Given
+	// When
+	this.$el.stop();
+
+	// Then
+	ok(true, "stop() is called successfully without script errors.");
+});
+
+test("stop on animated element", function(assert) {
+	var done = assert.async();
+	var duration = 3000;
+	var stopTime = 500;
+
+	// Given
+	this.$el
+		.animate({"left": "100px"}, duration)
+
+	// When
+	setTimeout($.proxy(function() {
+		// Call stop
+		this.$el.stop();
+
+		//Then
+		ok(true, "stop called successfully");
+		done();
+	}, this), stopTime);
+});
+
 test("pause", function(assert) {
 	var done = assert.async();
 
@@ -265,3 +296,19 @@ test("Delay pause/resume test", function(assert) {
 		done();
 	}, this), totalDuration + totalDuration * 0.2);
 });
+
+test("delay on non-animated element test", function(assert) {
+	var done = assert.async();
+	var t1 = new Date().getTime();
+	// Given
+	// When
+	this.$el.delay(1000).queue(function(next) {
+		var t2 = new Date().getTime();
+		// Then
+		ok((t2-t1) >= 1000, "delay() successfully");
+		done();
+
+		//MUST call next() to dequeue the next item. otherwise next item will not be dequeue automatically.
+		next();
+	});
+});