slimerjs | A scriptable browser like PhantomJS , based on Firefox | Test Automation library

This is first time i cant open website using headless browser such: phantomjs, slimerjs or casperjs. I just want to open website. I just create very basic script to open the website and take screenshot. but 3 (three) of them give me blank picture.

i try using:

My understanding is that SlimerJS support in CasperJS is currently experimental (CasperJS 1.1.0-beta1, SlimerJS 0.8). And there are differences between the SlimerJS and CasperJS APIs.

Before I found this out, I assumed that the ultimate goal of CasperJS was to be a single framework that could run the same script against either Gecko (with SlimerJS) or WebKit (with PhantomJS), and I wouldn't need to "learn" Slimer or Phantom.

It now looks like there is limited abstraction, in which case I might as well use each underlying frameworks directly. Is the point that some abstraction is better than none, and things are likely to improve?

I am not asking for an opinion on "which framework is better right now" or "is CasperJS good enough". I want to understand the (documented, possibly aspirational) goals of CasperJS.

I am using CasperJS along with PhantomXHR. When I run the code in webkit version I can able to mock the response but the same script is not working in Firefox using --engine= slimerjs. It launches the Firefox browser and shows the Page error as window.sinon is undefined. Any solution to get rid of this issue. Are PhantomXHR + sinon will support with slimerjs?

I read the documents and look like you need to have slimerjs http://docs.casperjs.org/en/latest/events-filters.html in order to get responseData.body from the page.resource.received event.

My use case is to download the images when the page is loaded so I don't do another round trip of: get the resource JSON, download and save any image file, reload the file to check for image dimension and if too small (icons) -> eliminate.

I am wondering if there is a better way to do this. I could in fact go do evaluate img selector but some websites use background-url css and that's tricky.

I get the following message in the browser but the casperjs script runs fine in the terminal ont the server.

Gecko error: it seems /usr/bin/firefox is not compatible with SlimerJS. See Gecko version compatibility. If version is correct, launch slimerjs with --debug=true to see Firefox error message

I have a process in Slimerjs that I run through a child_process Nodejs and I need to pass it some arguments.

I know how to use cli args with Nodejs

I have a process done with Slimerjs just to make a screenshot of my app. Obviously, it needs to be launched from the server but it opens a browser when I run on my own pc.

How should I run it from a server in production?

Thanks

I am looking how to get karma-slimerjs-launcher to run with a version of Firefox that supports ES6.

This karma launcher uses an older version of slimerjs, while the last version, SlimerJS 0.10.2, supports Firefox 38 to 50.

I see that now Firefox has to be installed separately and SlimerJS may need to be pointed to it.

How can that be done in Jenkins?

I have written a script in Nodejs that takes a screenshot of websites(using slimerJs), this script takes around 10-20 seconds to complete, the problem here is the server is stalled until this script has is finished.