uci-utils-logger/test/logger.test.js

import logger from '../src/logger'
import { expect } from 'chai'
import { it } from 'mocha'
import { stdout } from 'test-console'
//https://github.com/jamesshore/test-console

describe('JSON Logging Utility Testing ',async ()=> {

  let log
  // let captured = stdout.inspect().output
  // let capture = stdout.inspect
  // let restore = stdout.inspect().restore
  //
  class LogTest {
    constructor(opts) {
      log = logger({
        name: 'test',
        id: opts.id,
        // file: 'example/example.js',
        // class: 'LogTest',
        // repo:'test repo'
        package:'@uci-utils/test'
      })
      // console.log('env',process.env.UCI_ENV)
    }
    async logit(level,msg,props={}) {
      Object.assign(props,{msg:msg})
      log[level](props)
    }
  }

  // TODO this is available from the logger as .levels
  let levelName = {
    10:'trace',
    20:'debug',
    30:'info',
    40:'warn',
    50:'error',
    60:'fatal'
  }

  let logtest = {}
  let inspect = {}

  beforeEach( () => {
    // console.log('starting console capture')
    inspect = stdout.inspect()
  })
  afterEach( () => {
    inspect.restore()
    // console.log('console.restored')
  })


  it('check dev output to console'   , async function () {
    // setup
    let msg='test'
    let level = 'info'
    let moreprops = {}
    process.env.UCI_ENV='dev'
    logtest = new LogTest({id:'someid'})

    // create log to stdout
    logtest.logit(level,msg,moreprops)

    // test stdout response
    let response = inspect.output[0]
    expect(response).to.have.string(level.toUpperCase())  &&
    expect(response).to.have.string(msg)
  })

  it('check json output'   , async function () {
    // setup
    let msg='test'
    let level = 'info'
    let moreprops = {}
    process.env.UCI_ENV='dev'
    process.env.UCI_LOG_JSON=true
    logtest = new LogTest({id:'someid'})

    // create log to stdout
    logtest.logit(level,msg,moreprops)

    // test stdout response
    let response = inspect.output[0]
    response = JSON.parse(response)
    expect(response.msg).to.equal(msg)  &&
    expect(levelName[response.level]).to.equal(level)
  })


})