I would like to update the Selenium version 3.6.0 and I was wondering which is the best version of FF to use if Gecko driver is not used?
Any help will be highly appreciated.
Selenium with Gecko Driver
Selenium Release Perspective :
Selenium v3.6.0 (Java) Release explicitly didn't mention any dependency explicitly.
The last dependency explicitly mentioned by Selenium was for v3.4.0 which is as follows :
Geckodriver 0.16 is strongly recommended
GeckoDriver Release Perspective :
GeckoDriver v0.19.0: Firefox 55.0 (and greater) & Selenium 3.5 (and greater)GeckoDriver v0.18.0: Firefox 53.0 (and greater)GeckoDriver v0.16.0: Selenium 3.4 (and greater)
Mozilla Firefox Versions :
Ideally, each Selenium release should support each version of Mozilla Firefox releases (starting with Firefox 48.x) where the property "marionette" needs to be set to true (either by default or through configuration) as follows:
cap = DesiredCapabilities().FIREFOX
cap["marionette"] = True
If you are working with the legacy Firefox releases (till Firefox 47.x) GeckoDriver still works but you have to explicitly set the property "marionette" to false as follows:
cap = DesiredCapabilities().FIREFOX
cap["marionette"] = False
GeckoDriver, Selenium and Firefox Browser compatibility chart
You would need to use GeckoDriver if you want to run your scripts in Firefox versions greater than 47.0.1. Firefox 47.0.1 and before would not need GeckoDriver.
source: http://www.automationtestinghub.com/selenium-3/
You would need to use GeckoDriver if you want to run your scripts in Firefox versions greater than 47.0.1. Firefox 47.0.1 and before would not need GeckoDriver
来源：https://stackoverflow.com/questions/47073748/which-firefox-version-is-compatible-with-selenium-3-6-0