diff --git a/client/core/spin/spin.test.js b/client/core/spin/spin.test.js
new file mode 100644
index 0000000..99c531c
--- /dev/null
+++ b/client/core/spin/spin.test.js
@@ -0,0 +1,57 @@
+modules.define(
+    'test',
+    [
+        'spin',
+        'y-dom',
+        'jquery',
+        'inherit'
+    ],
+
+    function (
+        provide,
+        Spin,
+        dom,
+        $,
+        inherit
+    ) {
+        describe('Spin', function () {
+            var spin;
+            var expect = chai.expect;
+
+            var SpinStub = inherit(Spin, {
+                _classes: function() {
+                    return [].slice.call(this.getDomNode()[0].classList)
+                }
+            });
+
+            beforeEach(function(){
+                spin = new SpinStub();
+                spin.getDomNode().appendTo(document.body);
+            });
+
+            afterEach(function(){
+                spin.destruct();
+            });
+
+
+            it('should have class _progressed after creation', function (){
+                expect(spin._classes()).to.contain('_progressed');
+            });
+
+            it('should remove class _progressed, on spin stop', function () {
+                spin.stop();
+
+                expect(spin._classes()).to.not.contain('_progressed');
+            });
+
+            it('should add class _progressed, on spin start', function () {
+                spin.stop();
+                spin.start();
+
+                expect(spin._classes()).to.contain('_progressed');
+            });
+        });
+
+        provide();
+    }
+);