import { extractMessage } from '../error'

describe('extractMessage', () => {
  test('it extracts messages', () => {
    expect(extractMessage(new Error('test message'))).toEqual('test message')
    expect(extractMessage({ message: 'test message' })).toEqual('test message')
  })

  test('it returns undefined when unable to extract message string', () => {
    expect(extractMessage({})).toBeUndefined()
    expect(extractMessage('foo')).toBeUndefined()
    expect(extractMessage(1234)).toBeUndefined()
    expect(extractMessage(true)).toBeUndefined()
    expect(extractMessage(null)).toBeUndefined()
    expect(extractMessage({ message: 1234 })).toBeUndefined()
    expect(extractMessage({ message: true })).toBeUndefined()
    expect(extractMessage({ message: null })).toBeUndefined()
    expect(extractMessage({ message: {} })).toBeUndefined()
  })
})