reactjs - mocha + jsdom + React TypeError: Cannot read property 'addEventListener' of undefined -


i'm getting started unit testing react 0.10.0 component mocha 2.3.3, jsdom 6.5.1, , node.js 4.1.1. have unit test:

var react = require('react/addons'); var testutils = react.addons.testutils; var sinon = require('sinon'); var expect = require('chai').expect; var jsdom = require('jsdom'); var view = require('../student-name-view.js');  describe('the student name view', function() {      var renderedcomponent = null;     var namechangedstub = sinon.stub();     var namesubmittedstub = sinon.stub();      before(function() {         global.document = jsdom.jsdom('<!doctype html><html><body></body></html>');         global.window = document.parentwindow;         this.renderedcomponent = testutils.renderintodocument(             view({                 namechanged:   namechangedstub,                 namesubmitted: namesubmittedstub             })         );         this.nameinput = testutils.findrendereddomcomponentwithtag(renderedcomponent, 'input').getdomnode();     });      describe('should notify controller', function() {          it('when name field changes', function() {             testutils.simulate.change(this.nameinput);             expect(namechangedstub.called).to.be.true;         });      });  });

and simple react view:

var react = require('react');  var studentnameview = react.createclass({      render: function() {         return react.dom.div({             id: 'name-container',             children: [                 react.dom.p({                     children: 'enter name'                 }),                 react.dom.input({                     id: 'nameinput',                     onchange: this.props.namechanged                 }),                 react.dom.button({                     id: 'donebutton'                 })             ]         })     }  });  module.exports = studentnameview;

when run test, stack trace:

 typeerror: cannot read property 'addeventlistener' of undefined   @ object.eventlistener.listen (node_modules/react/lib/eventlistener.js:21:15)   @ object.merge.ensurescrollvaluemonitoring (node_modules/react/lib/reacteventemitter.js:315:21)   @ object.reactmount._registercomponent (node_modules/react/lib/reactmount.js:282:23)   @ object.<anonymous> (node_modules/react/lib/reactmount.js:305:36)   @ object._rendernewrootcomponent (node_modules/react/lib/reactperf.js:57:21)   @ object.reactmount.rendercomponent (node_modules/react/lib/reactmount.js:359:32)   @ object.rendercomponent (node_modules/react/lib/reactperf.js:57:21)   @ object.reacttestutils.renderintodocument (node_modules/react/lib/reacttestutils.js:57:18)   @ context.<anonymous> (test/student-name-view-test.js:19:44)

any ideas i'm doing wrong?

i'm posting solution in case helps else. it's explained in detail here, in nutshell: must ensure dom ready before react loaded node's module loader. can force using mocha's --require option , specifying file contains jsdom setup.

in case, created file named setup.js in test directory following contents:

var jsdom = require('jsdom');  global.document = jsdom.jsdom('<!doctype html><html><body></body></html>'); global.window = document.defaultview; global.navigator = {useragent: 'node.js'};

and test runs command:

mocha --require ./test/setup.js


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