Enzyme expects an adapter to be configured

Question

I created a new React application by create-react-app and I wanted to write a unit test to a component named \"MessageBox\" that I created in the application. This is the un

Answer 1

The file configuration must be in setupFilesAfterEnv property of jest.config.js

{
  ...
  setupFilesAfterEnv: ["/jest.transform.js"],
  ...
}