test.js

'use strict'

/* eslint no-prototype-builtins: 0 */

const test = require('ava')
const createError = require('./')

test('Create error with zero parameter', t => {
  const NewError = createError('CODE', 'Not available')
  const err = new NewError()
  t.true(err instanceof Error)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'Not available')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, 500)
  t.truthy(err.stack)
})

test('Create error with 1 parameter', t => {
  const NewError = createError('CODE', 'hey %s')
  const err = new NewError('alice')
  t.true(err instanceof Error)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'hey alice')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, 500)
  t.truthy(err.stack)
})

test('Create error with 2 parameters', t => {
  const NewError = createError('CODE', 'hey %s, I like your %s')
  const err = new NewError('alice', 'attitude')
  t.true(err instanceof Error)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'hey alice, I like your attitude')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, 500)
  t.truthy(err.stack)
})

test('Create error with 3 parameters', t => {
  const NewError = createError('CODE', 'hey %s, I like your %s %s')
  const err = new NewError('alice', 'attitude', 'see you')
  t.true(err instanceof Error)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'hey alice, I like your attitude see you')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, 500)
  t.truthy(err.stack)
})

test('Create error with no statusCode property', t => {
  const NewError = createError('CODE', 'hey %s', 0)
  const err = new NewError('dude')
  t.true(err instanceof Error)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'hey dude')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, undefined)
  t.truthy(err.stack)
})

test('Should throw when error code has no fastify code', t => {
  try {
    createError()
  } catch (err) {
    t.is(err.message, 'Fastify error code must not be empty')
  }
})

test('Should throw when error code has no message', t => {
  try {
    createError('code')
  } catch (err) {
    t.is(err.message, 'Fastify error message must not be empty')
  }
})

test('Create error with different base', t => {
  const NewError = createError('CODE', 'hey %s', 500, TypeError)
  const err = new NewError('dude')
  t.true(err instanceof Error)
  t.true(err instanceof TypeError)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'hey dude')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, 500)
  t.truthy(err.stack)
})

test('FastifyError.toString returns code', t => {
  const NewError = createError('CODE', 'foo')
  const err = new NewError()
  t.is(err.toString(), 'FastifyError [CODE]: foo')
})

test('Create the error without the new keyword', t => {
  const NewError = createError('CODE', 'Not available')
  const err = NewError()
  t.true(err instanceof Error)
  t.is(err.name, 'FastifyError')
  t.is(err.message, 'Not available')
  t.is(err.code, 'CODE')
  t.is(err.statusCode, 500)
  t.truthy(err.stack)
})