Steps to initiate my selenium-standalone server: Execute the command "selenium-standalone start"

I'm currently facing a challenge while trying to execute a test script in WebDriverIO.

After cloning the code from wdio-cucumber-framework, I am unable to get selenium-standalone to start properly.

The error message indicates an issue with geckodriver, but I can't seem to find a solution anywhere.

/Users/adam/.nvm/versions/node/v10.15.1/lib/node_modules/selenium-standalone/bin/selenium-standalone:79 throw err; ^

Error: Missing /Users/adam/.nvm/versions/node/v10.15.1/lib/node_modules/selenium-standalone/.selenium/geckodriver/0.23.0-x64-geckodriver at /Users/adam/.nvm/versions/node/v10.15.1/lib/node_modules/selenium-standalone/lib/check-paths-existence.js:15:20 at suppressedCallback (fs.js:200:5) at FSReqWrap.oncomplete (fs.js:141:20) sira-JSS774:wdio-cucumber-framework sira$

I've experimented with different versions and have confirmed that geckodriver is installed. However, it seems like the required directory ".selenium/geckodriver/0.23.0-x64-geckodriver" does not exist.

I was anticipating for "selenium-standalone start" to function correctly in the terminal, but unfortunately, it's not working as expected.

javascriptseleniumwebdriverselenium-chromedrivergeckodriver

Answer №1

To use selenium-standalone, you must first install the drivers by running selenium-standalone install

Once this command is executed, the drivers will be downloaded and installed in the directory 

/path/to/node_modules/selenium-standalone/.selenium/****

Subsequently, starting the driver servers can be done with the command selenium-standalone start

A helpful tip: I have incorporated this as a devDependency within my project. This allows me to utilize the CLI using npx as a prefix (similar to sudo)

Below is a simple guideline for configuring selenium-standalone:

  1. Add as a devDep: npm i -D selenium-standalone
  2. Install web drivers: npx selenium-standalone install
  3. Launch web drivers as a detached process: 
    npx selenium-standalone start &
  4. Execute tests: npm test

Answer №2

Dealing with the same challenges today. According to their documentation, the solution involves installing all driver binaries, even if they won't be used, in order to get the server up and running.

yarn selenium-standalone install --singleDriverInstall=chrome --drivers.chrome.version=95.0.4638.69
...
yarn selenium-standalone install --singleDriverInstall=geckodriver
yarn selenium-standalone install --singleDriverInstall=msedgedriver

After that, executing 

yarn selenium-standalone start --drivers.chrome.version=95.0.4638.69
resolves the issue.

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