github-pages-deploy-action/__tests__/util.test.ts

import {execute} from '../src/util';
import {exec} from '@actions/exec';

jest.mock('@actions/exec', () => ({
  exec: jest.fn()
}))

test('util - execute - should be called with the correct arguements', async() => {
  await execute('echo Montezuma', './')

  expect(exec).toBeCalledWith(
    "echo Montezuma", [], {
      cwd: "./",
      listeners: {
        stdout: expect.any(Function)
      }
    }
  )
});