tape-catch/index.js

a wrapper around tape that catches and reports exceptions

var tape = require('tape')
var global = require('global')
var tests = require('./manager')()
var harness

exports = module.exports = tape

// Maintain tape@1 compatibility
var _end = (
  exports.Test.prototype._end ||
  exports.Test.prototype.end
)

exports.Test.prototype._end = function () {
  tests.remove(this)
  _end.apply(this, arguments)
}

exports.Test.prototype.run = function () {
  if (!this._cb || this._skip) {
    return this._end()
  }
  this.emit('prerun')
  try {
    tests.add(this)
    this._cb(this)
  }
  catch (err) {
    this.error(err)
    this._end()
    return
  }
  this.emit('run') 
}


var createHarness = exports.createHarness
exports.createHarness = function () {
  harness = createHarness.apply(this, arguments)
  return harness
}

process.browser ?
  global.onerror = killall :
  process.on('uncaughtException', killall)

function killall (err) {
  if (tests.killall(err)) return

  // Died outside of a test block
  harness ?
    harness('uncaughtException', die) :
    tape('uncaughtException', die)

  function die (test) {
    test.error(err)
    test.end()
  }
}