unexpected-eventemitter/dist/unexpected-eventemitter.js

EventEmitter assertions for Unexpected

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.unexpectedEventEmitter = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
module.exports={
  "version": "2.4.0"
}
},{}],2:[function(require,module,exports){
'use strict';

var ref = require('../package.json');
var version = ref.version;

module.exports = {
  name: 'unexpected-eventemitter',
  version: version,
  installInto: function installInto(expect) {
    expect.addType({
      base: 'object',
      name: 'EventEmitter',
      identify: function (obj) { return obj !== null &&
        typeof obj === 'object' &&
        typeof obj.emit === 'function' &&
        typeof obj.once === 'function' &&
        typeof obj.on === 'function'; },
    });

    var toEmitFrom = function (expect, subject, ee, eventName) {
      var values = [], len = arguments.length - 4;
      while ( len-- > 0 ) values[ len ] = arguments[ len + 4 ];

      var emitted = false;
      var emittedValues;

      var onEvent = function () {
        var values = [], len = arguments.length;
        while ( len-- ) values[ len ] = arguments[ len ];

        emitted = true;
        emittedValues = values;
      };

      ee.once(eventName, onEvent);

      return expect
        .promise(function () {
          expect.errorMode = 'bubble';
          return expect(subject, 'to be fulfilled');
        })
        .then(function () {
          expect.errorMode = 'default';
          expect(emitted, '[not] to be true');
          expect.errorMode = 'nested';
          values.forEach(function (value, idx) {
            expect(emittedValues[idx], '[not] to satisfy', value);
          });
        })
        .finally(function () {
          ee.removeListener(eventName, onEvent);
        });
    };

    var toEmitWithErrorFrom = function (
      expect,
      subject,
      error,
      ee,
      eventName
    ) {
      var values = [], len = arguments.length - 5;
      while ( len-- > 0 ) values[ len ] = arguments[ len + 5 ];

      var emitted = false;
      var emittedValues;

      var onEvent = function () {
        var values = [], len = arguments.length;
        while ( len-- ) values[ len ] = arguments[ len ];

        emitted = true;
        emittedValues = values;
      };

      ee.once(eventName, onEvent);

      return expect
        .promise(function () {
          expect.errorMode = 'bubble';
          return expect(subject, 'to be rejected with', error);
        })
        .then(function () {
          expect.errorMode = 'default';
          expect(emitted, 'to be true');
          expect.errorMode = 'nested';
          values.forEach(function (value, idx) {
            expect(emittedValues[idx], 'to satisfy', value);
          });
        })
        .finally(function () {
          ee.removeListener(eventName, onEvent);
        });
    };

    expect
      .addAssertion(
        '<function> [not] to emit from <EventEmitter> <string> <any*>',
        toEmitFrom
      )
      .addAssertion(
        '<Promise> [not] to emit from <EventEmitter> <string> <any*>',
        toEmitFrom
      )
      .addAssertion(
        '<function> to emit with error from <Error> <EventEmitter> <string> <any*>',
        toEmitWithErrorFrom
      )
      .addAssertion(
        '<Promise> to emit with error from <Error> <EventEmitter> <string> <any*>',
        toEmitWithErrorFrom
      );
  },
};

},{"../package.json":1}]},{},[2])(2)
});

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