Selenium grid Configuration With Screenshots

Overview:

Selenium Grid is a tool that dramatically speeds up functional testing of web-apps by leveraging your existing computing infrastructure. It allows you to easily run multiple tests in parallel, on multiple machines, in a heterogeneous environment.

Based on the excellent Selenium web testing tool, Selenium Grid allows you to run multiple instances of Selenium Remote Control in parallel. Selenium Grid cuts down on the time required to run a Selenium test suite to a fraction of the time that a single instance of Selenium instance would take to run.

Selenium Grid Architecture

Prerequisites:

1. Need to download and install the latest Java JRE on system. JRE file can find at http://www.oracle.com/technetwork/java/index-jsp-141438.html

2. Set the environment variables for java.

3. Once environment setup is completed, open up a command prompt and run the command java -version. It should look something like the image below.

4. Need to download Apache Ant and expand the archive to a folder on hard drive. Set the environment variables for Ant. Once setup is completed open up a terminal\

Command prompt and type ant -version.

It should look something like the image below

5. Download latest version of selenium grid from

http://selenium-grid.seleniumhq.org/download.html.

The folders structure should look like:

Running the sample test script:

Now that the environment and test data are set up, you can run two different scenarios of parallel testing:

1. Test script run in different browsers on a server.

2. Test script run in parallel on remote machines in different browsers.

1.Test script run in different browsers on a server

First we have to start our server. Fallow this commands using command prompt

Launching the Hub:

C:\>cd Program Files

C:\> Program Files\> cd java

C:\> Program Files\> java\> cd selenium-grid-1.0.8

C :\> Program Files\> java\> selenium-grid-1.0.8\> ant launch-hub

This will launch the Selenium Hub on 4444 port. It should look something like the image below.

Now we need to register 2 remote controls to Grid Hub. One is RC running for Firefox tests and the other for Google chrome tests.

Open the new command prompt from the Grid directory and run the following

Command.

C:\>cd Program Files

C:\> Program Files\> cd java

C:\> Program Files\> java\> cd selenium-grid-1.0.8

C :\> Program Files\> java\> selenium-grid-1.0.8\>ant -Dport=5556 -Denvironment=*firefox launch-remote-control

This will start Remote Control instance on 5556 and will be listening to Grid Hub.

Open another command prompt from the Grid directory and run the following command

C:\>cd Program Files

C:\> Program Files\> cd java

C:\> Program Files\> java\> cd selenium-grid-1.0.8

C :\> Program Files\> java\> selenium-grid-1.0.8\>ant -Dport=5556 -Denvironment=*firefox launch-remote-control

This will start Remote Control instance on 5557 and will be listening to Grid Hub.

Open the browser and launching following URL http://localhost:4444/console

So far configured details can be seen by clicking above URL.

This is to make sure RCs registered to Grid Hub

Selenium Grid Hub console

Available Remote Controls

All the remote controls which we have launched above will be listed in Grid console window.

Active Remote Controls

Remote Control to which scripts are currently running are called as active RC’S.

Executing Script on multiple browsers:

This script launches instances of Google chrome, Firefox browsers. It will open the www.gifts.com website and clicks on “birthday as occasion” link. It asserts whether the landing page displays the birthday gifts in all the two browsers as expected.

Test script:

package gift Shop;

import org.testng.annotations.Test;

import org.testng.Assert;

import org.testng.annotations.AfterClass;

import org.testng.annotations.BeforeClass;

import org.testng.annotations.Parameters;

import com.thoughtworks.selenium.DefaultSelenium;

import com.thoughtworks.selenium.Selenium;

public class giftBox

{

Selenium selenium;

//Declaration of variables used in this program

String strTimeout="30000";

String bdayTitle="Birthday Gifts - Birthday Gift Ideas from Gifts.com";

int intsleepTime=15000;

@BeforeClass

//Reads the values of host, port, browser and url "www.gifts.com" from testng.xml

@Parameters({ "selenium.host", "selenium.port", "selenium.browser", "selenium.url" })

public void beforeClass(String host, String port, String browser, String url)

{

selenium = new DefaultSelenium(host, Integer.parseInt(port),browser, url);

selenium.start();

selenium.open("");

selenium.windowMaximize();

selenium.windowFocus();

selenium.deleteAllVisibleCookies();

}

@Test

@Parameters({ "bdayLink" })

public void testB(String bDayGift)

{

try

{

//Click on birthday as occasion on www.gifts.com website

selenium.click(bDayGift);

selenium.waitForPageToLoad(strTimeout);

//Verify that the birthday gift items page is displayed

Assert.assertEquals(bdayTitle, selenium.getTitle());

Thread.sleep(intsleepTime);

}

catch (Exception e)

{

e.printStackTrace();

}

@AfterClass

public void afterClass()

{

selenium.close();

selenium.stop();}}

.XML file :

As we are going to use multiple sets of data, XML file will help us to maintain data and it will be easy to understand and modify.

Create an xml file (ex: testng.xml) and specify the browser and port names with which we have configured our selenium remote control as in the below piece of code.

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">

</classes>

</test>

</classes>

</test>

</suite>

2. Test script run in parallel on remote machines in different browsers:

First we have to start our Grid Hub in one machine. Follow these commands using command prompt

Launching the Hub:

C:\>cd Program Files

C :\> Program Files\> cd java

C :\> Program Files\> java\> cd selenium-grid-1.0.8

C :\> Program Files\> java\> selenium-grid-1.0.8\> ant launch-hub

Start the nodes:

Now we need to register remote controls from first machine to hub. now RC is running on Firefox browser.

Open the command prompt from the Grid directory and run the following command.

C:\>cd Program Files

C :\> Program Files\> cd java

C :\> Program Files\> java\> cd selenium-grid-1.0.8

C :\> Program Files\> java\> selenium-grid-1.0.8\>ant -Dport=5555 – Dhost=192.168.101.10 -DhubURL=http://192.168.101.10:4444 –Denvironment=*firefox launch-remote-control

This will start Remote Control instance on 5555 and will be listening to Grid hub which is launched in other system.

Now we need to register remote controls from second machine to hub. Now RC is running on Google chrome.

C:\>cd Program Files

C :\> Program Files\> cd java

C :\> Program Files\> java\> cd selenium-grid-1.0.8

C :\> Program Files\> java\> selenium-grid-1.0.8\> ant -Dport=5557 –Dhost=<192.168.101.3> -DhubURL=http://localhost:4444 -Denvironment=*googlechrome launch-remote-control

This will start Remote Control instance on 5557 and will be listening to hub.

Open the browser and launch the following URL http://localhost:4444/console

So far configured details can be seen by clicking above URL.

This is to make sure RCs registered to hub.

Selenium Grid Hub console

Executing Sample Script in Multiple machines Using Grid:

This script launches Google chrome, Firefox browsers in multiple machines. It will open the www.gifts.com website and clicks on “birthday as occasion” link. It asserts whether the landing page displays the birthday gifts in all the two browsers in different machines as expected.

Test script:

package gift Shop;

import org.testng.annotations.Test;

import org.testng.Assert;

import org.testng.annotations.AfterClass;

import org.testng.annotations.BeforeClass;

import org.testng.annotations.Parameters;

import com.thoughtworks.selenium.DefaultSelenium;

import com.thoughtworks.selenium.Selenium;

public class giftBox

{

Selenium selenium;

//Declaration of variables used in this program

String strTimeout="30000";

String bdayTitle="Birthday Gifts - Birthday Gift Ideas from Gifts.com";

int intsleepTime=15000;

@BeforeClass

//Reads the values of host, port, browser and url "www.gifts.com" from testng.xml

@Parameters({ "selenium.host", "selenium.port", "selenium.browser", "selenium.url" })

public void beforeClass(String host, String port, String browser, String url)

{

selenium = new DefaultSelenium(host, Integer.parseInt(port),browser, url);

selenium.start();

selenium.open("");

selenium.windowMaximize();

selenium.windowFocus();

selenium.deleteAllVisibleCookies();

}

@Test

@Parameters({ "bdayLink" })

public void testB(String bDayGift)

{

try

{

//Click on birthday as occasion on www.gifts.com website

selenium.click(bDayGift);

selenium.waitForPageToLoad(strTimeout);

//Verify that the birthday gift items page is displayed

Assert.assertEquals(bdayTitle, selenium.getTitle());

Thread.sleep(intsleepTime);

}

catch (Exception e)

{

e.printStackTrace();

}

@AfterClass

public void afterClass()

{

selenium.close();

selenium.stop();}}

.XML file:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">

</classes>

</test>

</classes>

</test>

</suite>

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Selenium grid Configuration With Screenshots

Selenium grid Configuration With Screenshots

Overview:

Selenium Grid Architecture

Prerequisites:

Running the sample test script:

1.Test script run in different browsers on a server