diff --git a/app/scripts/tests/setup.js b/app/scripts/tests/setup.js
index <HASH>..<HASH> 100644
--- a/app/scripts/tests/setup.js
+++ b/app/scripts/tests/setup.js
@@ -1,5 +1,4 @@
 var jsdom = require('jsdom').jsdom;
-
 var exposedProperties = ['window', 'navigator', 'document'];
 
 global.document = jsdom('');
@@ -21,3 +20,10 @@ global.navigator = {
 const noop = () => null
 require.extensions['.scss'] = noop
 require.extensions['.png'] = noop
+
+////
+// Sinon-Chai
+////
+import chai from 'chai'
+import sinonChai from 'sinon-chai'
+chai.use(sinonChai)
Add Sinon-Chai setup when run tests with Mocha.