Add tests

.babelrc

package.json

src/api/__mocks__/users.js

src/api/login.js

src/api/transaction.js

src/api/users.js

src/store/modules/user.js

src/store/modules/users.js

src/utils/request.js

src/views/users/index.vue

test/views/users/index.test.js

test/views/users/store.conf.js

yarn.lock