No mock for 'useAsyncStorage' in jest

[rawatnaresh]

I'm using both AsyncStorage and useAsyncStorage in my application but it turns out there is no mock implementation for 'useAsyncStorage` and I'm getting an error

is there a way i can fix this without switching my code to the AsyncStorage

[kieran-osgood]

I used this (in my jest.setup.js which is included in my jest.config.js via the: setupFiles: ['<rootDir>/jest.setup.js'], to get up and running:

jest.mock('@react-native-community/async-storage', () => ({
  useAsyncStorage: jest.fn(),
}));

When you want to test based on it returning some example data then adjust jest.fn() to jest.mockReturnValue({...data}). Should be enough for you to continue writing your tests :)

[rawatnaresh]

Thank you for your reply @KieranO547 . I updated your answer like this and it worked.

jest.mock('@react-native-community/async-storage', () => ({
  useAsyncStorage: () => ({
    getItem: jest.fn(),
    setItem: jest.fn(),
  }),
}));