Temporarily overrides the command line arguments. This is useful for testing.

# npm
$ npm install mock-argv

# Yarn
$ yarn add mock-argv

const mockArgv = require('mock-argv')

test('works', async () => {

  mockArgv(['foo', 'bar'], () => {
    //> process.argv = [
    //>   'path-to-node',
    //>   'path-to-current-script',
    //>   'foo',
    //>   'bar',
    //> ]
  })

  //> process.argv = ['path-to-node', 'path-to-current-script', '...other-params']

  // Also works for async functions
})

Are you missing something or want to contribute? Feel free to file an issue or a pull request! ⚙️

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• output-files: Output a tree of files and directories by providing an object. Especially useful for testing with real files.
• with-local-tmp-dir: Creates a temporary folder inside cwd, cds inside the folder, runs a function, and removes the folder. Especially useful for testing.
• expect-mocha-image-snapshot: A wrapper around jest-image-snapshot that makes it compatible to Mocha.
• jest-image-matcher: A Jest matcher for image comparisons based on pixelmatch. Can also be used with Mocha. Useful for visual regression testing.
• unify-mocha-output: Adjusts a Mocha output so that it is consistent across platforms and can be used for snapshot testing. Basically adjusts the checkmark symbol and removes time values.

MIT License © Sebastian Landwehr