webdriver-w3c-spec

Protocol : A standard to define a method of exchanging data over a network. If a browser wants to communicate with a server, it has to create an HTTP request and send that HTTP request to the server to convey its request of resources and options. The server receives the request and process it and do the needful and create an HTTP response to send to the browser. The browser has to follow the HTTP specification in creating the HTTP request. The server also has to follow the HTTP specification in creating the HTTP response. This is how the communication between the browser and the server happens

With version 75 of Chrome just released, our tests no longer run properly. They give the stacktrace pasted below. We are using ruby on rails v. 5.1.6.2 with rspec, selenium-webdriver 3.8.0. Stacktrace: Selenium::WebDriver::Error::UnknownCommandError: unknown command: Cannot call non W3C standard command while in W3C mode # 0 chromedriver 0x000000010c46e8e9 chromedriver + 3594473 # 1 chromedriver 0x000000010c3fe543 chromedriver + 3134787 # 2 chromedriver 0x000000010c1aa29f chromedriver + 692895 # 3 chromedriver 0x000000010c11a691 chromedriver + 104081 # 4 chromedriver 0x000000010c11b7d5

We have Cucumber Ruby automation framework where we run few tests on Chrome headless browser in a Docker on Jenkins. A few days ago we started receiving an error "This version of ChromeDriver only supports Chrome version 75" this time we were using ChromeDriver 2.46 and with google-chrome-unstable browser using the following command: #Chrome RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - RUN echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list RUN apt-get update -y RUN apt-get install -y google-chrome