I have a page which contains a rich-text editor. I used CKEditor for this. You pass it a div element and it loads the editor into that element.
Now I wanted to write integration tests for that page. I am using zombie.js with version 4.2.1 (old, I know, but I'm stuck with it) for that purpose. However, I get an error just trying to load the page. The problem apparently happens while trying to load editor into the div element. This is the relevant output:
[some other resources loading]
zombie GET http://localhost:10003/js/lib/ckeditor.js => 200 +0ms
zombie GET http://localhost:10003/js/pages/categories/init.js => 200 +0ms
zombie http://localhost:10003/js/lib/ckeditor.js:6623
e.dataset.ckeFiller = true;
^
TypeError: Cannot set property 'ckeFiller' of undefined
at au (http://localhost:10003/js/lib/ckeditor.js:6623:37)
at Module.<anonymous> (http://localhost:10003/js/lib/ckeditor.js:7326:24)
at n (http://localhost:10003/js/lib/ckeditor.js:57:22)
at http://localhost:10003/js/lib/ckeditor.js:100:20
at http://localhost:10003/js/lib/ckeditor.js:101:10
at t (http://localhost:10003/js/lib/ckeditor.js:47:258)
at http://localhost:10003/js/lib/ckeditor.js:48:7
at Script.runInContext (vm.js:133:20)
at Object.runInContext (vm.js:311:6)
at window._evaluate (/home/laura/Projekte/fricke/hybristools/node_modules/zombie/lib/document.js:253:75)
in http://localhost:10003/categories +68ms
Debug-Output hier:
undefined
{ http://localhost:10003/js/lib/ckeditor.js:6623
e.dataset.ckeFiller = true;
^
TypeError: Cannot set property 'ckeFiller' of undefined
at au (http://localhost:10003/js/lib/ckeditor.js:6623:37)
at Module.<anonymous> (http://localhost:10003/js/lib/ckeditor.js:7326:24)
at n (http://localhost:10003/js/lib/ckeditor.js:57:22)
at http://localhost:10003/js/lib/ckeditor.js:100:20
at http://localhost:10003/js/lib/ckeditor.js:101:10
at t (http://localhost:10003/js/lib/ckeditor.js:47:258)
at http://localhost:10003/js/lib/ckeditor.js:48:7
at Script.runInContext (vm.js:133:20)
at Object.runInContext (vm.js:311:6)
at window._evaluate (/home/laura/Projekte/fricke/hybristools/node_modules/zombie/lib/document.js:253:75)
in http://localhost:10003/categories
cause:
http://localhost:10003/js/lib/ckeditor.js:6623
e.dataset.ckeFiller = true;
^
TypeError: Cannot set property 'ckeFiller' of undefined
at au (http://localhost:10003/js/lib/ckeditor.js:6623:37)
at Module.<anonymous> (http://localhost:10003/js/lib/ckeditor.js:7326:24)
at n (http://localhost:10003/js/lib/ckeditor.js:57:22)
at http://localhost:10003/js/lib/ckeditor.js:100:20
at http://localhost:10003/js/lib/ckeditor.js:101:10
at t (http://localhost:10003/js/lib/ckeditor.js:47:258)
at http://localhost:10003/js/lib/ckeditor.js:48:7
at Script.runInContext (vm.js:133:20)
at Object.runInContext (vm.js:311:6)
at window._evaluate (/home/laura/Projekte/fricke/hybristools/node_modules/zombie/lib/document.js:253:75)
in http://localhost:10003/categories,
isOperational: true }
I know that the error is not related to CKEditor because I tried it with another rich-text editor, which gave me the exact same error (only the property name was different).
The error apparently happens while trying to set the value of the HTML property "data-cke-filler" of a br element. This is the element:
That element is inserted into the editor at the time of creation, it represents the content of the editor, which is empty at the beginning.
I tried to use zombies debugging capabilites, however, as the error occurs while the site loads I don't really get a chance to output anything useful. As far as I am aware, zombie.js should be able to handle loading this page.
So my question is: What is causing this error and how can I fix it?
Let me know if you need more information.
Thanks.
Edit:
Here is the code where I load the page (it's written in CoffeeScript):
require 'should'
Browser = require '../../support/browser'
describe 'editor page', ->
browser = new Browser({debug: true})
before (done) ->
browser.debug()
browser.visitLoggedIn('/', {name: 'tester', password: 'secret'})
.then (done) ->
browser.visitPage '/editor' # this is what doesn't work
.then (done) ->
console.log 'page loaded'
.catch (error) ->
console.error error
it 'things should appear', ->
...
The visitLoggedIn
method is a custom method that just creates necessary cookies for browsing the application as an authenticated user and visits the page using visitPage
. visitPage
uses zombies visit
method. These work fine in all the other integration tests of this application.
Edit 2: So I managed to "mock" CKEdtor using this answer. This isn't exactly what I wanted, but I decided to try to work with this for now. However, now I get the exact same error! This time the error is thrown inside my own code:
# These are two functions that are run shortly after inserting the editor into the page,
# so basically while the page is still loading.
getLanguageChoice: -> # This one is executed first
document.getElementById('language').value
getMandantChoice: -> # This one second
document.getElementById('shopClient').dataset.name # The error is thrown here
This is the exact error:
TypeError: Cannot read property 'name' of undefined
at Object.CategoriesView.getMandantChoice (http://localhost:10003/js/pages/categories/view.js:49:59)
at http://localhost:10003/js/pages/categories/app.js:22:97
at process._tickCallback (internal/process/next_tick.js:68:7)
This doesn't make any sense to me. Does this mean that zombie somehow can't access the values of data-* attributes? Maybe someone is knowledgeable about zombie and can provide further insight?
After further looking around with the new insights I gained, I found this ticket on the Github page of the project. It looks like the dataset property is not implemented in an underlying library in the used version. As I am not able to upgrade, it's just not possible to load the page like it is...
To work around this, I will refactor my code to not use the data-* property. This is luckily not tied to too much work in my case.