Browse Category: Selenium RC

Jenkins and Continuous Test Execution

Continuous test execution is an essential part of automation testing, especially in regression run. If you need to start execution manually means your return on investment is not as good as needed. There are multiple ways to do this. Developers in many companies use Continuous Integration (CI) tool like Hudson, Rational Team Concert for building application multiple times in a day where codes are checked in from multiple locations. You can use the same feature of building application to perform testing as well. You can build your own in-house application to perform the same task. I will give an idea for the same at the end of the blog.

I use WebDriver for automation testing in .NET framework.  I heard that many companies use Jenkins for CI and even for testing so thought to implement my tests written in C#. After some research on the internet, I was able to implement a basic skeleton for continuous testing. In order to understand and to customize Jenkins, we will go Step by Step.

  1. Download Jenkins.
  2. Run and verify Jenkins.
  3. Install as a Window Service.
  4. Configure Jenkins as a slave. (Optional. Read only if you want to learn.)
  5. Create Job to execute the test.

1.       Download Jenkins:

In order to download Jenkins, Go to and download ‘Latest and greatest’ version of Java web archive (.war) file and save it to some location.

2.       Run And Verify Jenkins:

Open Command window and navigate to the location where you have downloaded *.war file. Execute following command (I saved Jenkins.war file in D drive)

  • Java –jar Jenkins.war

You will see following output


If you read all lines you will see that HTTP Listeners started at port 8080.


3.       Install Jenkins as Window Service:

Node: If you install as window service, your tests will run in the background.

Perform Step 2 if not yet done. Click ‘Manage Jenkins’ you will see the following screen with various option.


Click on ‘Install as Windows Service link. You will see the following screen.


Click on Install button. Once installation complete you will see following:

Go to Window Services and verify if you can see there or not. image006 For now, you will not require starting Jenkins site on the command line. You can directly start http://localhost:8080/ if your Jenkins service is running. NOTE: if you are using only window OS then you can directly install native package from image007 You need to unzip the folder and install MSI file. That will install and get ready for step 3.

4.       Configure Jenkins as a Slave:

This is most interesting part of Jenkins. Here you can configure your slave attached to Master which is ready for step 3. You can assign tasks to various slave to perform like test execution etc. Start Jenkins Website and click on the link ‘Manage Jenkins’. You will see following option among various other options. image008 Click on the above option which will take you to the following screen. image009 Now you need to create Node that connected to master (Just like GRID (HUB-NODE)). To do that you need to click on ‘New Node’ link that should you to following screen. image010 Give some Name of Node and Click on Dumb Slave radio button that will activate the OK button. Click on OK button. This will take you to the following screen. image011 You can click on Help icon toimage012 understand more about the fields. I am giving following options # of executor: 1, Remote FS root:  D:\Shared. Launch method: Save this. It will take you the following screen. image013 As you can see above, you can start that node by given three options. It is up to you, to choose but I prefer the first option. Click on the Orange button with Launch. This will ask you to download slave-agent.jnlp. Please save this to the location where you have created your slave i.e. D:\Slave. Open command prompt and change directory to the location where you have saved this file and execute following command Javaws slave-agent.jnlp after some processing you may see following windows: image014 This will disappear in few seconds and you will see Jenkins slave Agent screen with ‘Connected’ text on the screen. image015 If you go back to Jenkin site and refresh the page in Manage Node screen, you will see the following screen. image016 You can install this slave into the machine as window services using File menu given in ‘Jenkin salve agent’ screen so in future you will not require doing the whole process of starting slave via jlnp image017 image018 Click ‘OK’. This may ask your permission to run the program. image019 Will see that Jenkins slave agent window disappear and if you check in ‘services’ you will be able to see slave as services. image020 Go back to Jenkins site and Click on slave link the page and make sure that you can see slave running. image021 Now your slave is connected to your master and ready to serve you for execution by added execution job assigned by you as given in next section.

5.       Create JOB to Execute Test:

Once your slave node is running, go to home page of Jenkins and click on ‘New Job’. image022 This will take you to the following window. Provide Job name as per your choice and select radio button. ‘Build a free-style software project’. And hit OK. image023

This will take you the detailed screen and you can fill information as you needed. Few points are very important which you should consider.

  1. Execute test at specific Node.


2. Regression Run repletion :

How frequent you want to execute the test.


There are various commands you can give to select the frequency of test execution ie. Every hour or at every day at some specific time frame. You can Google the commands or I can write a separate article about this if needed.

3. Execute Tests from various options (batch command preferred at least in my case)


4. Post Execution:

Configure to send email or prepare report as NUnit/Junit repot etc.


Once you save this job this will take you to the following screen.


Click on  [Back to Dashboard] link that will take you the following screen.


To execute test you can click on.image030 You will see the following screen.


I think much detail covers the basic understanding of Jenkins configuration for test execution. I hope this will give you are the direction to configure Jenkins in your project. I use Webdriver in .NET environment and configure Jenkins for continuous execution and  it was successful implementation but later we decided to build our own internal application to specific for our own application which can do continuous execution and other tasks as well which is not possible via Jenkins like customized internal website with customized graph and tables but that’s another story.

I am going to write another article specifically how to execute tests using MSBuild, msTest and Nunit and another article for JUnit.

How to use WebDriver to handle dropdown or select tag

We can use regular webdriver command to handle most of webelements like check box, text box etc. but to handle dropdown or select element as given below

<select id="sel123">

<option value="my">My</option>

<option value="name">Name</option>

<option value="is">Is</option>

<option value="admin">Admin</option>


you can use following code.

IWebElement sTag = driver.FindElement(By.Id("sel123"));
OpenQA.Selenium.Support.UI.SelectElement selectTag = new OpenQA.Selenium.Support.UI.SelectElement(sTag);

In case if you want to verify how many options are available in select tag then use following:

 var availableOptions = selectTag.Options;
 foreach (IWebElement item in availableOptions)

Selenium GRID and Nunit

Everyone asking about how to setup Selenium GRID. We were using Visual Studio to execute script which was kind of time consuming. It used to take minium 1.5 hours after every build. After that I implemented GRID and divided  tests into groups based on category and ran in parallel and achieved 66% improvement. Not bad ;).

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If you have any question, I will try to answer. If you are using webdriver and want to use grid then you need to use remote webdriver instead. Every thing will be the same.

Remember: If you try to use two instances of Firefox execution in parallel in same machine , you won’t be able to but chrome will work.

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