How to know if Selenium Server is ready?

[javi_gomez]

Hi,

In our continuous integration at Travis we start the selenium server this way:

   # Selenium server
  - "wget http://selenium-release.storage.googleapis.com/2.43/selenium-server-standalone-2.43.1.jar"
  - "java -jar selenium-server-standalone-2.43.1.jar > /dev/null 2>/dev/null &"
  - sleep 30

We are leaving 30 seconds to make sure it has enough time to start. However we get sometimes this:

Meaning that the Server did not got time to start.
Instead of increasing the waiting time, does anyone has any better approach to know when Selenium server is ready to start the tests?

Thanks

[etki]

@javi_gomez i'd put all that logic into global _bootstrap.php so you would have more precise control over loading (you can put selenium availability check in a loop that would end right when it's loaded) and can be sure it's up. Selenium starts at 0.0.0.0:4444 by default, so simple HEAD request to http://localhost:4444/wd/hub should be enough to check if it's running.

[javi_gomez]

http://localhost:4444/wd/hub

It worked! I did this script:

#!/bin/sh

# Loop until selenium server is available
printf 'Waiting Selenium Server to load\n'
until $(curl --output /dev/null --silent --head --fail http://localhost:4444/wd/hub); do
    printf '.'
    sleep 1
done
printf '\n'

And then I call it in my travis.yml like:

...
  # Selenium server
 - "wget http://selenium-release.storage.googleapis.com/2.43/selenium-server-standalone-2.43.1.jar"
 - "java -jar selenium-server-standalone-2.43.1.jar > /dev/null 2>/dev/null &"
 - .travis/wait4selenium.sh
...

Thanks ^_^

[Junelan]

hi，I trouble with the same issue , can you give me more details about the yml.
i try to config like below, but it does not work.

class_name: FunctionalTester
modules:
    enabled:
      - Yii2
      - PhpBrowser
      - WebDriver
      - Db
      - Asserts
      - REST
 #     - FunctionalHelper
    config:
        Yii2:
            configFile: 'codeception/config/functional.php'
        PhpBrowser:
            url : 'http://forms.localhost.com'

        REST:
            url : 'http://forms.localhost.com'
        WebDriver:
            url : 'http://forms.localhost.com'
            browser: firefox
            host: localhost
            window_size: maximize

        Db:
            dsn: 'mysql:host=192.168.65.10;dbname=ucx'
            user: root
            password: root
    # Selenium server
    - "java -jar /tmp/selenium/selenium-server-standalone-2.44.0.jar -Dwebdriver.firefox.bin=/usr/lib/firefox/firefox-bin 1>/dev/null 2>&1 &"

    coverage:

it warn me like below:

You cannot define a sequence item when in a mapping 

how can i run the command.

Thx.

[javi_gomez]

ops... I didn't meant the codeception.yml but the travis.yml. See https://github.com/redCOMPONENT-COM/redCORE/blob/develop/.travis.yml#L31