DbCommand.test.ts

import { defaultTestConfig } from '@prisma/config'

import { DbCommand } from '../commands/DbCommand'

it('no params should return help', async () => {
  const commandInstance = DbCommand.new({})
  const spy = jest.spyOn(commandInstance, 'help').mockImplementation(() => 'Help Me')

  await commandInstance.parse([], defaultTestConfig())
  expect(spy).toHaveBeenCalledTimes(1)
  spy.mockRestore()
})

it('wrong flag', async () => {
  const commandInstance = DbCommand.new({})
  const spy = jest.spyOn(commandInstance, 'help').mockImplementation(() => 'Help Me')

  await commandInstance.parse(['--something'], defaultTestConfig())
  expect(spy).toHaveBeenCalledTimes(1)
  spy.mockRestore()
})

it('help flag', async () => {
  const commandInstance = DbCommand.new({})
  const spy = jest.spyOn(commandInstance, 'help').mockImplementation(() => 'Help Me')

  await commandInstance.parse(['--help'], defaultTestConfig())
  expect(spy).toHaveBeenCalledTimes(1)
  spy.mockRestore()
})

it('unknown command', async () => {
  await expect(DbCommand.new({}).parse(['doesnotexist'], defaultTestConfig())).resolves.toThrow()
})