Add chai-spies for testing helpers

Author: nodkz

package.json

@@ -64,6 +64,7 @@
     "babel-relay-plugin": "^0.8.0",
     "chai": "^3.5.0",
     "chai-as-promised": "^5.3.0",
+    "chai-spies": "^0.7.1",
     "eslint": "^2.8.0",
     "eslint-config-airbnb": "^7.0.0",
     "eslint-plugin-jsx-a11y": "^0.6.2",

resources/mocha-bootload.js

@@ -1,7 +1,11 @@
+/* eslint-disable */
+
 import chai from 'chai';
 import chaiAsPromised from 'chai-as-promised';
+import chaiSpies from 'chai-spies';
 
 chai.use(chaiAsPromised);
+chai.use(chaiSpies);
 
 process.on('unhandledRejection', (error) => {
   console.error('Unhandled Promise Rejection:');