Improve code coverage

Author: michaeltintiuc

src/router.js

@@ -4,7 +4,7 @@ import IonVueRouter from './components/ion-vue-router.vue'
 let globalVue = null
 let globalVueRouter = null
 
-if (typeof window !== 'undefined') {
+if (typeof window !== 'undefined' && window.Vue !== undefined) {
   globalVue = window.Vue
   globalVueRouter = window.VueRouter
 } else if (typeof global !== 'undefined') {

test/router.node.spec.js

@@ -0,0 +1,9 @@
+import Vue from 'vue'
+
+describe('asd', () => {
+  it('qqq', () => {
+    window.Vue = undefined
+    global.Vue = Vue
+    require('../src/router.js')
+  })
+})