test(jest): fix jest trying to import css

Author: klarkc

template/jest.config.js

@@ -41,6 +41,9 @@ module.exports = {
         '^.+\\.js$': 'babel-jest',
         '^.+\\.vue$': 'vue-jest',
       },
+      moduleNameMapper: {
+        '\\.(css)$': '<rootDir>/node_modules/jest-css-modules',
+      },
     },
     {
       displayName: 'common',

template/package.json

@@ -68,6 +68,7 @@
     "gulp-connect": "^5.0.0",
     "gulp-sourcemaps": "^2.6.0",
     "jest": "^22.4.4",
+    "jest-css-modules": "^1.1.0",
     "jest-plugins": "^2.9.0",
     "jest-preset-loopback": "^1.0.0",
     "loopback-jest": "^1.3.0",