tap-dev-tool/register.js

prettifies TAP in the browser's console

var fails = []
var tests = {}
var start = null
var isTAP = require('./lib/is-tap-string')
var previousLog = ''

var parser = require('tap-console-parser')()
  .on('complete', function (output) {
    var time = Date.now() - start
    parser.detach()
    console.log('\n')

    if (!output.ok) {
      console.log('%c\nFailing Tests: ' + output.fail, 'font-weight: bold')
      Object.keys(tests).forEach(function (key) {
        var test = tests[key]
        var asserts = fails[key] || []
        if (asserts.length === 0) {
          return
        }

        console.log('%c  ' + test.name, 'color: gray')

        asserts.forEach(function (fail) {
          console.log('%c     ⨯ ' + fail.name, 'font-weight: bold; color: #c32b2b')

          console.log('%c     ---', '')
          var str = fail.error.raw
            .split('\n')
            .map(function (x) {
              return '   ' + x
            })
            .join('\n')

          console.log(str)
          console.log('%c     ...', '')
        })
      })
      console.log('')
    }

    if (output.ok) {
      console.log('%c✓ ok', 'color: white; padding: 1px 10px; background: #8eca6c; font-weight: bold')
    } else {
      console.log('%c⨯ not ok', 'color: white; padding: 1px 10px; background: #c32b2b; font-weight: not ok')
    }
    if (!output.ok) {
      console.log('%c  total:    ' + output.total, 'font-weight: bold')
    }
    console.log('%c  passing:  ' + output.pass, 'color: #72b432; font-weight: bold')
    if (!output.ok) {
      console.log('%c  failing:  ' + output.fail, 'color: #c32b2b; font-weight: bold')
    }
    console.log('%c  duration: ' + time + ' ms', 'color: gray')

    start = null
  })
  .on('assert', function (assert) {
    if (assert.ok) {
      parser.log('%c   ✓', 'color: #8eca6c', assert.name)
    } else {
      if (fails[assert.test]) {
        fails[assert.test].push(assert)
      } else {
        fails[assert.test] = [ assert ]
      }

      parser.log('%c   ⨯ ' + assert.name, 'color: #c32b2b; font-weight: bold')
    }
  })
  .on('test', function (test) {
    if (start === null) {
      start = Date.now()
    } else {
      parser.log('')
    }
    parser.log('%c' + test.name, 'color: gray')
    tests[test.number] = test
  })
  .on('log', function (args) {
    // allow comments to print as per normal
    var str = args.join(' ')
    if (str && !isTAP(str)) {
      if (!previousLog || !/^\s*(expected|actual|at)\:\s*$/.test(previousLog)) {
        parser.log.apply(null, args)
      }
    }
    previousLog = str
  })