small update

Author: mightyaleksey

test/api/rootDir.js

@@ -1,6 +1,6 @@
 const detachHook = require('../sugar').detachHook;
 const dropCache = require('../sugar').dropCache;
-const path = require('path');
+const join = require('path').join;
 
 suite('api/rootDir', () => {
   suite('should change the way in which tokens are generated', () => {
@@ -10,7 +10,7 @@ suite('api/rootDir', () => {
     test('should return different tokens', () => assert.notDeepEqual(tokens1, tokens2));
 
     setup(() => {
-      hook({rootDir: path.join(__dirname, '../../')});
+      hook({rootDir: join(__dirname, '../../')});
       tokens1 = require('./fixture/oceanic.css');
       dropCache('./api/fixture/oceanic.css');