Add jest-dom for more testing methods

jest.config.js

@@ -1,21 +1,18 @@
 module.exports = {
+  setupFilesAfterEnv: ["./jest.setup.js"],
   moduleNameMapper: {
-    '^@/(.*)$': '<rootDir>/$1',
-    '^~/(.*)$': '<rootDir>/$1',
-    '^vue$': 'vue/dist/vue.common.js'
+    "^@/(.*)$": "<rootDir>/$1",
+    "^~/(.*)$": "<rootDir>/$1",
+    "^vue$": "vue/dist/vue.common.js"
   },
-  moduleFileExtensions: [
-    'js',
-    'vue',
-    'json'
-  ],
+  moduleFileExtensions: ["js", "vue", "json"],
   transform: {
-    '^.+\\.js$': 'babel-jest',
-    '.*\\.(vue)$': 'vue-jest'
+    "^.+\\.js$": "babel-jest",
+    ".*\\.(vue)$": "vue-jest"
   },
   collectCoverage: true,
   collectCoverageFrom: [
-    '<rootDir>/components/**/*.vue',
-    '<rootDir>/pages/**/*.vue'
+    "<rootDir>/components/**/*.vue",
+    "<rootDir>/pages/**/*.vue"
   ]
-}
+};