Is it possible to test client side SSL certificates with Selenium and any browser? E.g. Can you create a web driver and give dummy certificates for it? Or use a prepared Fir
I dont know if this helps, but you can change some of the preferences in the profile. In Java, you could do this.
ProfilesIni allProfiles = new ProfilesIni();
FirefoxProfile profile = allProfiles.getProfile("default"); //change profile name. there is a note somewhere on how to change it
profile.setPreference(uaKey, uaValue);
profile.setAcceptUntrustedCertificates(acceptUntrustedSsl);
I am not sure this is what you need.