text: import test from 'ava'
  import EmptyError from 'error/Empty'
  
  const expectedName = 'EmptyError'
  const customMessage = 'Custom error message'
  
  test('name', t => {
    const err = new EmptyError()
    t.is(err.name, expectedName)
  })
  
  test('message', t => {
    const err = new EmptyError(customMessage)
    t.is(err.message, customMessage)
  })
  
  test('tostring', t => {
    const err = new EmptyError(customMessage)
    const expectedString = expectedName + ': ' + customMessage
    t.is(err.toString(), expectedString)
  })
  