Add jest config file

Author: agualis

jest.config.js

@@ -0,0 +1,25 @@
+module.exports = {
+  "moduleFileExtensions": [
+    "js",
+    "json",
+    // tell Jest to handle *.vue files
+    "vue"
+  ],
+  "transform": {
+    // process js with babel-jest
+    "^.+\\.js$": "<rootDir>/node_modules/babel-jest",
+    // process *.vue files with vue-jest
+    ".*\\.(vue)$": "<rootDir>/node_modules/vue-jest"
+  },
+  // support the same @ -> src alias mapping in source code
+  "moduleNameMapper": {
+    "^@/(.*)$": "<rootDir>/src/$1",
+    '../api': '<rootDir>/src/api/__mocks__/fake-api.js'
+  },
+  // serializer for snapshots
+  "snapshotSerializers": [
+    "<rootDir>/node_modules/jest-serializer-vue"
+  ],
+  "setupTestFrameworkScriptFile": "<rootDir>/src/jest-setup.js"
+
+}