使用Selenium WebDriver禁用JavaScript？

Question

I have a program that tests some of our sites with javascript disabled. It worked well, until we updated from WebDriver 2.4.5 to the latest. Now I get this error:

java.lang.IllegalArgumentException: Preference javascript.enabled may not be overridden: frozen value=true, requested value=false

It looks like the argument to disable JS is no longer allowed. I can't downgrade the WebDriver because the earlier versions don't work correctly with our updated Firefox.

What are my options for testing with JS disabled? I know Chrome never worked before, and now Firefox doesn't. I tried searching for "webdriver js disabled" but the results just bring back the javascript.enabled, false argument that no longer seems to work.

Answer 1

Best I could come up with is;

Create a new Firefox profile called NoJs by starting it with -P

Go to about:config and disable javascript there

Use this profile in selenium

ProfilesIni allProfiles = new ProfilesIni();
FirefoxProfile profile = allProfiles.getProfile("NoJs");

WebDriver driver = new FirefoxDriver(profile);