test: stub matchMedia

Author: cocoastorm

test/unit/jest.conf.js

@@ -1,6 +1,7 @@
 const path = require('path');
 
 module.exports = {
+  testURL: 'http://localhost',
   rootDir: path.resolve(__dirname, '../../'),
   moduleFileExtensions: [
     'js',

test/unit/setup.js

@@ -2,6 +2,10 @@ import Vue from 'vue';
 
 Vue.config.productionTip = false;
 
-global.jsdom.reconfigure({
-  url: 'http://localhost',
-});
+// polyfill matchMedia
+window.matchMedia = window.matchMedia ||
+  (() => ({
+    matches: false,
+    addListener: () => {},
+    removeListener: () => {},
+  }));