diff --git a/tests/automated/event-dnd.js b/tests/automated/event-dnd.js
index f1f3110..78778cc 100644
--- a/tests/automated/event-dnd.js
+++ b/tests/automated/event-dnd.js
@@ -32,11 +32,7 @@ describe('eventDrop', function() {
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
 								dx: $('.fc-day').width() * 2,
-								dy: $('.fc-day').height(),
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dy: $('.fc-day').height()
 							});
 					},
 					function(event, delta, revertFunc) {
@@ -72,11 +68,7 @@ describe('eventDrop', function() {
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
 								dx: $('.fc-day').width() * -2,
-								dy: $('.fc-day').height(),
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dy: $('.fc-day').height()
 							});
 					},
 					function(event, delta, revertFunc) {
@@ -118,13 +110,8 @@ describe('eventDrop', function() {
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
 								dx: $('th.fc-wed').width(), // 1 day
-								dy: $('tr.fc-slot1').height() * 3, // 1.5 hours
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dy: $('tr.fc-slot1').height() * 3 // 1.5 hours
 							});
-						called = true;
 					},
 					function(event, delta, revertFunc) {
 						expect(delta.days()).toBe(1);
@@ -158,13 +145,8 @@ describe('eventDrop', function() {
 						$('.fc-event')
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
-								dx: $('th.fc-wed').width() * 2, // 2 days
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dx: $('th.fc-wed').width() * 2 // 2 days
 							});
-						called = true;
 					},
 					function(event, delta, revertFunc) {
 						expect(delta.days()).toBe(2);
@@ -200,13 +182,8 @@ describe('eventDrop', function() {
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
 								dx: $('th.fc-wed').width() * -1,
-								dy: $('.fc-agenda-allday').outerHeight() + $('.fc-agenda-divider').outerHeight(),
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dy: $('.fc-agenda-allday').outerHeight() + $('.fc-agenda-divider').outerHeight()
 							});
-						called = true;
 					},
 					function(event, delta, revertFunc) {
 						expect(delta.days()).toBe(-1);
@@ -247,10 +224,6 @@ describe('eventDrop', function() {
 							.simulate('drag', {
 								dx: $('th.fc-wed').width() * -1,
 								dy: -$('.fc-agenda-allday').outerHeight(),
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								},
 								callback: function() {
 									// the all day slot works off of mouse-moving coordinates
 									var offset = eventElm.offset();
diff --git a/tests/automated/event-resize.js b/tests/automated/event-resize.js
index 57e2b66..6ccae95 100644
--- a/tests/automated/event-resize.js
+++ b/tests/automated/event-resize.js
@@ -32,11 +32,7 @@ describe('eventResize', function() {
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
 								dx: $('.fc-day').width() * -2,
-								dy: $('.fc-day').height(),
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dy: $('.fc-day').height()
 							});
 					},
 					function(event, delta, revertFunc) {
@@ -92,11 +88,7 @@ describe('eventResize', function() {
 						$('.fc-event .ui-resizable-handle')
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
-								dx: $('th.fc-wed').width() * 1.5, // two days
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dx: $('th.fc-wed').width() * 1.5 // two days
 							});
 					},
 					function(event, delta, revertFunc) {
@@ -118,25 +110,23 @@ describe('eventResize', function() {
 			});
 		});
 
-		describe('when resizing a timed event', function() {
-			it('should have correct arguments with a timed delta', function(done) {
+		describe('when resizing a timed event with an end', function() {
+			beforeEach(function() {
 				options.events = [ {
 					title: 'timed event event',
 					start: '2014-06-11T05:00:00',
 					end: '2014-06-11T07:00:00',
 					allDay: false
 				} ];
+			});
 
+			it('should have correct arguments with a timed delta', function(done) {
 				init(
 					function() {
 						$('.fc-event .ui-resizable-handle')
 							.simulate('mouseover') // for our dumb optimization
 							.simulate('drag-n-drop', {
-								dy: $('tr.fc-slot1').height() * 4.5, // 5 slots, so 2.5 hours
-								interpolation: {
-									stepCount: 10,
-									duration: 100
-								}
+								dy: $('tr.fc-slot1').height() * 4.5 // 5 slots, so 2.5 hours
 							});
 					},
 					function(event, delta, revertFunc) {
diff --git a/tests/automated/select-callback.js b/tests/automated/select-callback.js
index 68c7cdb..00818d7 100644
--- a/tests/automated/select-callback.js
+++ b/tests/automated/select-callback.js
@@ -38,10 +38,6 @@ describe('select callback', function() {
 					$('#cal').fullCalendar(options);
 					$('.fc-day[data-date="2014-04-28"]').simulate('drag-n-drop', {
 						dropTarget: '.fc-day[data-date="2014-05-06"]',
-						interpolation: {
-							stepCount: 10,
-							duration: 100
-						},
 						callback: function() {
 							expect(options.select).toHaveBeenCalled();
 							done();
@@ -63,10 +59,6 @@ describe('select callback', function() {
 					$('#cal').fullCalendar(options);
 					$('.fc-day[data-date="2014-04-28"]').simulate('drag-n-drop', {
 						dropTarget: '.fc-day[data-date="2014-04-28"]',
-						interpolation: {
-							stepCount: 10,
-							duration: 100
-						},
 						callback: function() {
 							expect(options.select).toHaveBeenCalled();
 							done();
@@ -95,10 +87,6 @@ describe('select callback', function() {
 						$('#cal').fullCalendar(options);
 						$('.fc-agenda-allday .fc-day-content').simulate('drag-n-drop', { // middle will be 2014-05-28
 							dx: $('.fc-sun').outerWidth() * (isRTL ? -1 : 1), // the width of one column
-							interpolation: {
-								stepCount: 10,
-								duration: 100
-							},
 							callback: function() {
 								expect(options.select).toHaveBeenCalled();
 								done();
@@ -119,10 +107,6 @@ describe('select callback', function() {
 						spyOn(options, 'select').and.callThrough();
 						$('#cal').fullCalendar(options);
 						$('.fc-agenda-allday .fc-day-content').simulate('drag-n-drop', { // middle will be 2014-05-28
-							interpolation: {
-								stepCount: 10,
-								duration: 100
-							},
 							callback: function() {
 								expect(options.select).toHaveBeenCalled();
 								done();
@@ -146,10 +130,6 @@ describe('select callback', function() {
 						$('#cal').fullCalendar(options);
 						$('tr.fc-slot18 td').simulate('drag-n-drop', { // middle will be 2014-05-28T09:00:00
 							dy: $('tr.fc-slot18 td').outerHeight() * 2, // move down two slots
-							interpolation: {
-								stepCount: 10,
-								duration: 100
-							},
 							callback: function() {
 								expect(options.select).toHaveBeenCalled();
 								done();
@@ -170,10 +150,6 @@ describe('select callback', function() {
 						spyOn(options, 'select').and.callThrough();
 						$('#cal').fullCalendar(options);
 						$('tr.fc-slot18 td').simulate('drag-n-drop', { // middle will be 2014-05-28T09:00:00
-							interpolation: {
-								stepCount: 10,
-								duration: 100
-							},
 							callback: function() {
 								expect(options.select).toHaveBeenCalled();
 								done();
diff --git a/tests/lib/jquery-simulate-hacks.js b/tests/lib/jquery-simulate-hacks.js
index c006874..fa529f3 100644
--- a/tests/lib/jquery-simulate-hacks.js
+++ b/tests/lib/jquery-simulate-hacks.js
@@ -28,4 +28,27 @@
 		};
 	}
 
+
+	/*
+	Give jquery-simulate-ext drag-n-drop a default interpolation.
+	*/
+
+	var originalSimulate = $.fn.simulate;
+
+	$.fn.simulate = function(eventName, options) {
+
+		if (eventName == 'drag' || eventName == 'drop' || eventName == 'drag-n-drop') {
+			options = options || {};
+			if (options.interpolation === undefined) {
+				options.interpolation = {
+					stepCount: 10,
+					duration: 100
+				};
+			}
+			return originalSimulate.call(this, eventName, options);
+		}
+
+		return originalSimulate.apply(this, arguments);
+	};
+
 })(jQuery);
\ No newline at end of file