logatim/test/test-styles.js

Isomorphic logger which implements log levels and ANSI styles

const test = require('tap').test
const logatim = require('../index')

const dummies = {
  server: {
    none: 'raw\u001b[49m\u001b[0m',
    single: '\u001b[31mraw\u001b[49m\u001b[0m',
    last: '\u001b[31m\u001b[34mraw\u001b[49m\u001b[0m',
    set: '\u001b[1m\u001b[32mraw\u001b[49m\u001b[0m',
    bg: '\u001b[34m\u001b[43mraw\u001b[49m\u001b[0m',
    combo: '\u001b[34m\u001b[41m\u001b[1m\u001b[9m\u001b[42m\u001b[37mraw\u001b[49m\u001b[0m',
    concat: '\u001b[31mR\u001b[32mG\u001b[34mB\u001b[49m\u001b[0m'
  },
  browser: {
    none: ['raw'],
    single: ['%craw', 'color: #e74c3c'],
    last: ['%craw', 'color: #e74c3c;color: #3498db'],
    set: ['%craw', 'font-weight: 900;color: #2ecc71'],
    bg: ['%craw', 'color: #3498db;background-color: #f1c40f'],
    follow: ['%cfo%cllowme', 'color: #3498db', 'color: #2ecc71;font-weight: 900'],
    empty: ['%cemp%cty', 'color: #3498db', 'font-weight: 900'],
    combo: ['%craw', 'color: #3498db;background-color: #e74c3c;font-weight: 900;text-decoration: line-through;background-color: #2ecc71;color: #fff'],
    concat: ['%cR%cG%cB', 'color: #e74c3c', 'color: #2ecc71', 'color: #3498db']
  }
}

test('server style', function (t) {
  t.plan(8)

  var none = logatim.raw('raw')
  var single = logatim.red.raw('raw')
  var last = logatim.red.blue.raw('raw')
  var set = logatim.bold.green.raw('raw')
  var bg = logatim.blue.bgYellow.raw('raw')
  var combo = logatim.blue.bgRed.bold.strikethrough.bgGreen.white.raw('raw')
  var concat = logatim.red('R').green('G').blue('B').raw()

  t.equal(none, dummies.server.none, 'can output logs without styles')
  t.equal(single, dummies.server.single, 'can render an ANSI color')
  t.equal(last, dummies.server.last, 'the last color wins')
  t.equal(set, dummies.server.set, 'can render set styles')
  t.equal(bg, dummies.server.bg, 'can render background colors')
  t.equal(combo, dummies.server.combo, 'can styling forever')
  t.equal(concat, dummies.server.concat, 'can concat different styles')
  t.notDeepEqual(concat, logatim, 'and always return a new logatim object')
})

test('browser style', function (t) {
  t.plan(10)

  logatim.setEnv('browser')

  var none = logatim.raw('raw')
  var single = logatim.red.raw('raw')
  var last = logatim.red.blue.raw('raw')
  var set = logatim.bold.green.raw('raw')
  var bg = logatim.blue.bgYellow.raw('raw')
  var follow = logatim.blue('fo').green.bold('llow').raw('me')
  var empty = logatim.blue('emp').bold('ty').raw()
  var combo = logatim.blue.bgRed.bold.strikethrough.bgGreen.white.raw('raw')
  var concat = logatim.red('R').green('G').blue('B').raw()

  t.deepEqual(none, dummies.browser.none, 'can output logs without styles')
  t.deepEqual(single, dummies.browser.single, 'can render a CSS color')
  t.deepEqual(last, dummies.browser.last, 'the last color wins')
  t.deepEqual(set, dummies.browser.set, 'can render set styles')
  t.deepEqual(bg, dummies.browser.bg, 'can render background colors')
  t.deepEqual(combo, dummies.browser.combo, 'can styling forever')
  t.deepEqual(follow, dummies.browser.follow, 'follow style until next order')
  t.deepEqual(empty, dummies.browser.empty, 'do not add extra elements when level function is empty')
  t.deepEqual(concat, dummies.browser.concat, 'can concat different styles')
  t.notDeepEqual(concat, logatim, 'and always return a new logatim object')
})