diff --git a/spec/suites/dom/PosAnimationSpec.js b/spec/suites/dom/PosAnimationSpec.js
new file mode 100644
index 00000000..6cc2c0e2
--- /dev/null
+++ b/spec/suites/dom/PosAnimationSpec.js
@@ -0,0 +1,27 @@
+describe('PosAnimation', function() {
+	var el;
+
+	beforeEach(function() {
+		el = document.createElement('div');
+		this.subject = new L.PosAnimation();
+		this.subject._el = el;
+	});
+
+	describe('#_onStep', function() {
+		it("sets element position and fires step event if it is able to get current position", function() {
+			var point = new L.Point(5, 5, true);
+			sinon.stub(this.subject, '_getPos').returns(point);
+			this.subject.fire = sinon.stub();
+			this.subject._onStep();
+			expect(this.subject.fire.withArgs('step').calledOnce).to.be(true);
+			expect(this.subject._el._leaflet_pos).to.be(point);
+		});
+
+		it('stops transition if a position returned', function() {
+			sinon.stub(this.subject, '_onTransitionEnd');
+			sinon.stub(this.subject, '_getPos').returns(undefined);
+			this.subject._onStep();
+			expect(this.subject._onTransitionEnd.calledOnce).to.be(true);
+		});
+	});
+});