jest-mock-fs

Github: https://github.com/tashes/jest-mock-fs

Install this package using:

npm install jest-mock-fs

This package will create a jest mock factory function to allow you to mock a filesystem while still being able to check mock calls. To use it, import it and call it like so:

const jestMockFs = require('jest-mock-fs');

var mockFs = jestMockFs({
    'folder': {
        'file.ext': "contents",
        'anotherfile.ext': new Buffer()
    },
    'file.txt': "othercontents"
});
jest.mock('fs', () => ({ ...mockFs }));

The following fs functions have been mocked till now:

• [x] existsSync
  • _path_
• [x] readFileSync
  • path
  • options
    • encoding
• [x] writeFileSync
  • path
  • contents
  • options
    • • encoding
• [x] unlinkSync
  • path
• [x] readdirSync
  • -path
• [x] mkdirSync
  • path
• [x] rmSync
  • path
  • options
    • force
    • recursive
    • maxRetries
    • retryDelay