What Is Selenium Grid 2? When To Purpose Grid?

Earlier nosotros learnt selenium WebDriver/Selenium 2 tutorials amongst practical examples together with you lot tin honour all webdriver tutorials links on THIS PAGE. Selenium Grid 2 may last novel for close of you lot but you lot must needs to acquire It because If you lot wants to run your selenium software tests In multiple browser versions together with OS parallel hence you lot ask Selenium Grid 2. Let's endeavor to sympathise what Is selenium Grid together with when to purpose It.

What Is Selenium Grid 2?

Selenium Grid Is simply about other projection of selenium. Selenium grid render us facility for distributed software essay execution. Using selenium Grid, We tin execute our selenium WebDriver software tests In unlike browsers, unlike browsers versions together with unlike browser versions running on unlike operating systems In parallel at the same time.

Basically selenium grid has 1 hub together with multiple nodes. Each node amongst same or unlike environments (As per your requirement) to executed tests In parallel.

Bellow given Images shows representative construction of  selenium Grid. You tin run across at that spot Is unmarried Hub machine connected to multiple nodes(with unlike configuration) machine. You ask node machine equally per your requirement.

When To Use Grid 2?

Main questions Is what are the benefits of selenium grid together with why nosotros needs to purpose It. Mainly at that spot are ii reasons behind usage of selenium grid In software testing Industry.

1. To perform compatibility testing - You tin run same essay In multiple environments hence that It volition last really slowly for you lot to perform compatibility testing using selenium grid.
2. To trim down essay execution time - As you lot know, nosotros tin run same essay In multiple machines at same fourth dimension hence It volition trim down your essay execution time.

Using selenium grid, you lot tin speedup software essay execution process. Supposing your fifty software automation essay cases takes five hours to consummate execution In 1 machine hence selenium grid amongst five nodes configuration volition conduct keep solely 1 hr to execute fifty essay cases. This Is the primary create goodness of using selenium Grid.

NEXT POST volition depict you lot how to configure selenium grid from scratch to run selenium WebDriver software essay cases.

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Selenium Grid Ii Configuration - Setup Hub To Live Selenium Webdriver Tests

We learnt what is Selenium Grid 2 together with when to usage it inward PREVIOUS POST. Selenium Grid is approximately other projection of selenium thus y'all hollo for to configure selenium grid 2 from scratch to execute selenium webdriver software exam cases parallel in grid. Let's elbow grease to configure selenium grid In unmarried machine together with and thus nosotros volition run selenium webdriver tests In It.

As described In my previous post, We hollo for to setup 1 hub together with multiple nodes (number of nodes depends on your requirement) to execute selenium webdriver software exam cases parallel on selenium grid nodes.

What Is Hub?

In selenium grid, Hub is a fundamental indicate which have software exam requests together with transportation those software exam requests to nodes for execution. In our representative of selenium webdriver, When nosotros kickoff executing software exam on selenium grid, Grid hub volition have together with create create exam requests together with and thus transportation them to registered node machine. We tin configure node on same machine or dissimilar machines too. We volition acquire to a greater extent than nearly nodes inward upcoming post.

Setting Up Selenium Grid ii Hub

To execute selenium webdriver exam cases parallel In selenium grid, We hollo for to laid upwards selenium grid hub In your machine which volition supply available capabilities together with configuration to webdriver tests.

Step 1 : Download Selenium Standalone Server jar

You tin download selenium standalone server from THIS PAGE.

Current latest version of selenium standalone server is 2.52.0 thus y'all volition acquire "selenium-server-standalone-2.52.0.jar" file. Put it inward D: drive.

Note : If your selenium standalone server version is dissimilar than usage that version release inward all bellow steps. Otherwise it volition non run for you.

Step ii : Start Selenium Grid Hub

To kickoff hub,

1. Open ascendance prompt
2. Navigate to D: create past times typing ascendance D: inward ascendance prompt.
3. Type bellow given ascendance syntax inward ascendance prompt and press ENTER button.

java -jar selenium-server-standalone-2.52.0.jar -port 4444 -role hub

Command elements

• selenium-server-standalone-2.52.0.jar -> Selenium standalone server jounce file version. Modify It every bit per your jounce file version inward higher upwards ascendance if it is non 2.52.0.
• 4444 -> Port used past times hub to brain nodes.

Note : Please restart hub and  if seem upwards whatsoever effect on whatsoever phase during test. To restart grid ii hub

• Press CTRL+c keys of keyboard to shutdown node.
• Run higher upwards ascendance in 1 lawsuit once to a greater extent than to register node amongst hub.

Verify whether grid hub is running fine

It volition exhibit y'all message -> "Selenium Grid hub is upwards together with running." every bit shown inward bellow image.

Now y'all tin access selenium grid console using URL : http://localhost:4444/grid/console. Open this URL inward whatsoever browser. It volition exhibit y'all page similar bellow.

That way selenium grid hub is configured properly together with develop to use. We volition acquire how to configure nodes for seleniun grid ii hub inward NEXT POST.

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Selenium Grid Two Tutorial

This selenium grid ii tutorial volition need y'all how to purpose selenium grid ii to perform distributed software examination automation inward companionship to speedup software examination execution process. Using selenium grid 2, You tin execute your software automation examination inward unlike OS, unlike versions of browser as well as execute software automation tests inward parallel. Follow the tutorial links given at bellow to larn selenium grid ii from scratch.

• What Is Selenium Grid 2? When To Use Grid?
• Setup Grid ii Hub To Run Selenium WebDriver Tests
• Configure Selenium Grid ii Node To Run WebDriver Test
• Use Selenium Grid ii To Run WebDriver Test Cases In Parallel
• Using @DataProvider To Run Parallel WebDriver Tests
• Usage Of "maxInstances" In Selenium Grid 2
• Usage of "maxSession" In Selenium Grid 2
• Set Selenium Grid Node "timeout"
• Running Multiple Nodes Of  Grid On Same Machine
• Launch Selenium Grid Hub And Nodes Using "JSON" Config

STAY TUNED.. MORE TUTORIALS ARE COMING SOON...

How To Configure Selenium Grid Two Node To Piece Of Occupation Webdriver Test

As described In my EARLIER POST, Selenium grid 2 Is useful to execute webdriver software tests on multiple nodes In parallel. So nosotros take away to set upwards selenium grid 2 nodes for webdriver software examination execution. But earlier that, Your selenium grid hub should hold upwards configured as well as inward running fashion equally described inward my PREVIOUS POST. Now lets configure selenium grid 2 unmarried node to execute webdriver software automation tests inward parallel inward selenium grid.

Note : Here nosotros are configuring selenium grid node on same machine where selenium grid hub is running for your slowly understanding. Later on nosotros volition larn how to configure hub as well as nodes on dissimilar machines as well as run software automation examination on it.

What Is Node

Node is the indicate which convey examination requests from hub as well as execute them. We tin plough over the sack configure node inward such a way to execute tests inward parallel on dissimilar browsers at the same time. Also nosotros tin plough over the sack laid max position out of browsers allowed to run examination at a time, timeout etc. inward upcoming posts.

Registering Selenium Grid 2 Node To Hub

We take away to register selenium grid node to hub hence that hub tin plough over the sack sympathise where to run software automation tests when have asking for examination execution. But earlier that delight read bellow given prerequisites.

Prerequisites :

• Selenium grid hub should hold upwards In running fashion equally described In previous post.
• "chromedriver.exe" file should hold upwards located inward D: drive. It volition hold upwards needed to run tests inward google chrome browser. Read THIS POST to know from where to download it if yous produce non have "chromedriver.exe" file.
• "IEDriverServer.exe" file should hold upwards located in D: drive. It volition hold upwards needed to run tests inward Internet explorer browser.Read THIS POST to know from where to download it if yous produce non have "IEDriverServer.exe" file.
• Internet explorer browser's protected modes should hold upwards enabled for all zones equally described in THIS POST and browser zoom marking should hold upwards laid to 100% equally described inward THIS POST.

Now follow the steps given bellow.

1. Open unopen to other ascendance prompt (Separate than hub ascendance prompt).
2. Navigate to D: motility past times typing ascendance D: inward ascendance prompt.
3. Type bellow given ascendance syntax inward ascendance prompt as well as press ENTER button.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566

Command elements

• selenium-server-standalone-2.52.0.jar -> Selenium standalone server jolt file. Modify It equally per your jolt file version inward in a higher house ascendance if it is non 2.52.0.
• 5566 -> port position out which volition hold upwards used past times node.
• http://localhost:4444/grid/register : URL to register node where hub is running. Our electrical current configuration is running hub as well as nodes on same machine hence localhost inward URL volition operate here. 
• Note : If node Is running on dissimilar machine than the hub machine as well as hence yous take away to supervene upon IP address of hub machine alongside "localhost" inward in a higher house URL.
• -Dwebdriver.ie.driver="D:/IEDriverServer.exe" : Set path of IEDriverServer.exe file for node to run examination inward network explorer browser.
• -Dwebdriver.chrome.driver="D:/chromedriver.exe" : Set path of chromedriver.exe file for node to run examination inward google chrome browser.

Note : Please restart hub as well as node if confront whatsoever effect on whatsoever phase during test. To restart grid 2 node

• Press CTRL+c keys of keyboard to shutdown node.
• Run inward a higher house ascendance in 1 lawsuit once again to register node alongside hub.

We tin plough over the sack besides configure how many browsers yous take away on specific node(Example : 2 Firefox, iii chrome as well as iii IE browsers) as well as max how many allowed browsers to run on specific node. We volition larn it inward upcoming posts.

Verify whether grid node is running fine

When yous type inward a higher house ascendance In ascendance prompt, It volition exhibit yous message similar "The node is registered to the hub as well as cook to use" equally shown In bellow Image. That agency yous stimulate got configured node properly.

Now If yous access URL : http://localhost:4444/grid/console. It volition exhibit yous page similar bellow.

You tin plough over the sack see, in that place are dissimilar browsers similar 1 IE, five Firefox as well as five chrome browsers which yous tin plough over the sack utilisation to run your software automation test. Now, Selenium grid is cook to utilisation where hub as well as 1 node are running on same machine.

Now supposing nosotros stimulate got 1 examination illustration as well as wants to execute it inward parallel inward dissimilar iii browsers. Can nosotros produce it using this configuration? Answer is Yes.. View my NEXT POST to know how to produce it using selenium grid 2.

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How To Purpose Selenium Grid Two To Piece Of Job Webdriver Examination Cases Inward Parallel

Main payoff of selenium grid is nosotros tin run webdriver software exam cases inwards parallel using selenium grid 2 environment to reduce software exam execution time equally described inwards THIS POST. Also It helps us to perform compatibility testing equally it is supporting multiple browsers too. Earlier nosotros accept configured selenium grid two hub inwards THIS POST together with selenium grid nodes inwards THIS POST inwards simply unmarried machine. Now lets endeavor to role this environs to execute webdriver software automation exam cases inwards parallel.

Prerequisite : Selenium grid hub together with node should live on running equally described inwards previous steps.

I accept created uncomplicated software automation exam to execute it parallel inwards multiple browsers using selenium grid. It volition launch 3 browsers (Mozilla firefox, google chrome together with IE) parallel together with and then execute same software automation exam within each browser.

Note : Please withdraw mesh explorer related code materials from bellow given script if confront whatever related mistake equally it is non really stable amongst selenium grid.

Create bellow laissez passer exam inwards your eclipse projection nether Grid package.

SeGridTest.java

package Grid;  import static org.testng.Assert.fail;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit;  import org.openqa.selenium.By; import org.openqa.selenium.Capabilities; import org.openqa.selenium.WebDriver; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.openqa.selenium.support.ui.ExpectedConditions; import org.openqa.selenium.support.ui.WebDriverWait; import org.testng.annotations.AfterTest; import org.testng.annotations.BeforeTest; import org.testng.annotations.Parameters; import org.testng.annotations.Test;  populace cast SeGridTest {  WebDriver driver = null;  mortal StringBuffer verificationErrors = novel StringBuffer();   // Pass plateform, browser together with url parameters to launch browser together with URL inwards given plateform.  @Parameters({ "platform", "browser", "url" })  @BeforeTest(alwaysRun = true)  populace void setup(String platform, String browser, String url) throws MalformedURLException {   DesiredCapabilities caps = novel DesiredCapabilities();   // Set Platforms based on parameter received from testng.xml.   caps.setPlatform(org.openqa.selenium.Platform.WINDOWS);    // Set browser capability based on parameter received from testng.xml.   if (browser.equalsIgnoreCase("Internet Explorer"))    caps = DesiredCapabilities.internetExplorer();   if (browser.equalsIgnoreCase("Firefox"))    caps = DesiredCapabilities.firefox();   if (browser.equalsIgnoreCase("chrome"))    caps = DesiredCapabilities.chrome();    // Open browser on grid node.   driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"),caps);   driver.manage().timeouts().implicitlyWait(15, TimeUnit.SECONDS);   driver.manage().window().maximize();   // Open URL of Application   driver.get(url);  }   // Simple exam method to execute.  @Test(description = "Wait for push enabled")  populace void waitForButtonEnabled() throws InterruptedException {   WebDriverWait hold off = novel WebDriverWait(driver, 15);   wait.until(ExpectedConditions.elementToBeClickable(By.cssSelector("#submitButton")));   driver.findElement(By.xpath("//input[@id='submitButton']")).click();  }   // Simple exam method to execute.  @Test(description = "Wait for push enabled", dependsOnMethods = { "waitForButtonEnabled" })  populace void testCalc() throws InterruptedException {   driver.navigate().to("aa/search?q=what-is-selenium-grid-2-when-to-use-grid");   driver.findElement(By.xpath("//input[@id='2']")).click();   driver.findElement(By.xpath("//input[@id='plus']")).click();   driver.findElement(By.xpath("//input[@id='5']")).click();   driver.findElement(By.xpath("//input[@id='equals']")).click();   String trial = driver.findElement(By.xpath("//input[@id='Resultbox']")).getAttribute("value");    // Get Browser elevate together with version.   Capabilities caps = ((RemoteWebDriver) driver).getCapabilities();   String browserName = caps.getBrowserName();   String browserVersion = caps.getVersion();    // Get OS name.   String bone = System.getProperty("os.name").toLowerCase();    // Print exam trial amongst browser together with OS version detail.   System.out.println("OS = " + bone + ", Browser = " + browserName + " "+ browserVersion + " Test Result = " + result);  }   @AfterTest  populace void afterTest() {   // Close the browser   driver.quit();   String verificationErrorString = verificationErrors.toString();   if (!"".equals(verificationErrorString)) {    fail(verificationErrorString);   }  } }

If you lot remember, We accept used parallel inwards testng.xml file to execute software automation tests inwards parallel inwards selenium webdriver equally described inwards THIS POST. We volition role same matter hither but using selenium grid.

You tin see, We accept used parameters (plateform, browser together with url) amongst setup method. All these parameters volition live on served from testnx.xml file equally bellow. We accept configured 3 exam inwards bellow given xml file amongst unlike browser parameter to run exam inwards unlike browsers. Create bellow given testng.xml file nether your projection together with run it.

testng.xml

<!--Set thread-count = 3 to execute exam parallel inwards 3 max browsers at at time. You tin growth it--> <suite name="Parallel Tests" verbose="1" thread-count="3" parallel="tests">  <tests>      <!--Set exam parameters to execute exam inwards IE browser on windows plateform.-->   <test name="Windows+IE Test" >    <parameters>     <parameter name="platform" value="Windows" />     <parameter name="browser" value="Internet Explorer" />     <parameter name="url" value="aa/search?q=what-is-selenium-grid-2-when-to-use-grid" />    </parameters>    <classes>     <class name="Grid.SeGridTest" />    </classes>   </test>   <!--Set exam parameters to execute exam inwards Firefox browser on windows plateform.-->   <test name="Windows+Firefox Test" >    <parameters>     <parameter name="platform" value="Windows" />     <parameter name="browser" value="Firefox" />     <parameter name="url" value="aa/search?q=what-is-selenium-grid-2-when-to-use-grid" />    </parameters>    <classes>     <class name="Grid.SeGridTest" />    </classes>   </test>    <!--Set exam parameters to execute exam inwards chrome browser on windows plateform.-->   <test name="Windows+chrome Test" >    <parameters>     <parameter name="platform" value="Windows" />     <parameter name="browser" value="chrome" />     <parameter name="url" value="aa/search?q=what-is-selenium-grid-2-when-to-use-grid" />    </parameters>    <classes>     <class name="Grid.SeGridTest" />    </classes>   </test>     </tests> </suite>

Now, execute inwards a higher house testng.xml file together with disclose exam execution process. It volition  launch 3 browsers parallel together with and then execute tests inwards all 3 browsers. At the halt of exam execution, It volition impress trial inwards console equally bellow.

OS = windows 7, Browser = chrome 43.0.2357.132 Test Result = vii OS = windows 7, Browser = mesh explorer 8 Test Result = vii OS = windows 7, Browser = firefox 38.0.5 Test Result = 7

Testng trial volition looks similar bellow.

This is the agency to execute selenium webdriver software automation test inwards parallel multiple browsers using selenium grid 2 to perform compatibility testing.

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Selenium Grid Ii - Using @Dataprovider To Last Parallel Webdriver Tests

In my previous post, We learnt how to execute selenium WebDriver unmarried software automation attempt out inwards multiple browsers inwards parallel using Selenium Grid 2. We had used "parameter" tag inwards testng.xml file to feed browser advert inwards which your software automation attempt out needs to run inwards parallel. Instead of using @Parameters, We tin purpose @DataProvider notation method to feed browser names in addition to run selenium WebDriver attempt out inwards parallel using selenium Grid 2.

If y'all purpose @Parameters, You postulate to write same attempt out multiple times(Depends on position out of browsers)  in testng.xml file. Main create goodness of using @DataProvider notation method is y'all no postulate to write same software automation attempt out representative advert multiple times inwards testng.xml file. You guide maintain to write it alone i time inwards testng.xml file. @DataProvider notation method volition provide browser details to @Test method. To run attempt out inwards parallel, y'all postulate to ready (parallel=true) amongst @DataProvider annotation. Let's travail it amongst elementary example.

My requirement is : I wants to run my selenium software automation attempt out parallel inwards 3 browsers using selenium grid 2 in addition to testng notation @DataProvider.

Prerequisites :

• Selenium Grid 2 hub should last inwards running vogue every bit described inwards THIS POST.
• Selenium Grid 2 node should last registered amongst hub in addition to inwards running vogue every bit described inwards THIS POST.
• Also IE browser's protected modes should last enabled for all zones every bit described in THIS POST and zoom aeroplane should last ready to 100% every bit described in THIS POST if y'all are running your attempt out inwards IE browser too.

I am assuming your grid 2 hub in addition to node are working fine in addition to right away this is fourth dimension to launch software automation test. Write bellow given attempt out inwards eclipse.

Note : Please take network explorer related code materials from bellow given script if facial expression upward whatsoever related mistake every bit it is non real stable amongst selenium grid.

fillingForm.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit; import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  populace degree fillingForm {   //Used dataProvider parameter to acquire information from @DataProvider notation method.  //Can guide maintain object array data(browser name, First Name in addition to Last Name) from getNames method.  @Test(dataProvider = "getNames")  populace void gmailLogin(String browser, String fName, String lName) throws MalformedURLException, InterruptedException {      //Initialize DesiredCapabilities null.   DesiredCapabilities cap = null;    //Initialize browser driver every bit per information received from getNames().   if (browser.equals("firefox")) {    //Set firefox browser capabilities for windows platform.    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    //Set chrome browser capabilities for windows platform.    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("iexplore")) {    //Set IE browser capabilities for windows platform.    cap = DesiredCapabilities.internetExplorer();    cap.setBrowserName("internet explorer");    cap.setPlatform(Platform.WINDOWS);   }    //Initialize RemoteWebDriver on grid 2 node amongst browser capability.   RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);   //Open URL inwards requested browsers of node in addition to execute attempt out steps.   driver.get("aa/search?q=selenium-grid-2-configuration-setup-hub");   driver.findElement(By.name("FirstName")).sendKeys(fName);   driver.findElement(By.name("LastName")).sendKeys(lName);    driver.quit();  }    //Created @DataProvider notation method to render data(browser name, First Name in addition to Last Name) for test  @DataProvider(parallel=true)  populace Object[][] getNames(){   Object data[][] = novel Object[3][3];   data[0][0] = "firefox";   data[0][1] = "FirstName1";   data[0][2] = "LastName1";      data[1][0] = "chrome";   data[1][1] = "FirstName2";   data[1][2] = "LastName2";      data[2][0] = "iexplore";   data[2][1] = "FirstName3";   data[2][2] = "LastName3";        render data;  }  }

You tin run into inwards in a higher house test. We guide maintain used @DataProvider notation method amongst (parallel=true) to render information to @Test method.  So no postulate to set @Parameter inwards testng.xml file. Use bellow given testng.xml file to run inwards a higher house test.

testng.xml

<suite name="My Test Suite" verbose="2" parallel="tests" thread-count="5">  <test name="Selenium Grid Test">   <classes>    <class name="Grid2.fillingForm" />   </classes>  </test> </suite>

Execute inwards a higher house attempt out in addition to verify execution. It volition run attempt out inwards parallel inwards dissimilar 3 browsers. This agency y'all tin purpose @DataProvider notation method amongst (parallel=true) at house of @Parameter to execute attempt out inwards dissimilar browser parallel using selenium grid 2.

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Usage Of Maxinstances Inwards Grid Ii To Railroad Train Allowed Max Give Away Of Browser Instances

"maxInstances" is configuration parameter which is used during selenium grid 2 node configuration. Using "maxInstances" inward selenium grid 2, We tin john laid "how many max release of same browser instances are allowed to opened upwards as well as run software examine at same time". "maxInstances" tells node machine to non allow to a greater extent than than allowed instances on that specific machine at the same time. Lets utter over ane representative to cleat your doubts.

If yous launch selenium grid 2 node alongside default configuration equally described inward THIS POST, It volition set 1 IE, five Firefox as well as five chrome browsers instances on node machine equally bellow.

With this config, yous tin john run your software automation tests inward parallel on 1 IE browser, five Firefox browsers as well as five chrome browser at a time. That agency node is non capable to run your tests inward 2 IE browsers or vi Firefox browsers or vi chrome browsers at a time. Let's run into it practically to verify how it industrial plant if non laid required browser instances on node.

Example Scenario:  I cause got two software automation examine cases equally bellow as well as i wants to execute both of them inward parallel on 2 IE, 2 Google chrome as well as 2 Firefox browsers at the same time. Means it should opened upwards vi browser at a fourth dimension on node machine to execute both software automation examine cases inward all 3 browsers concurrently. Supposing i am using default node configuration (1 IE, five Chrome as well as five Firefox instances at a time) to run higher upwards scenario. It volition offset executing examine inward all vi browser instances at the same time? No.. First it volition launch five browser instances(1 IE, 2 Google chrome as well as 2 Firefox) only as well as execute examine on them. Remaining 1 IE browser instance volition move launched as well as executes examine ane time previous IE instance completes examine execution as well as getting closed. That agency your examine volition non run on 2 IE browser instances at the same fourth dimension using this node configuration.

Launch selenium grid hub equally described inward THIS POST and selenium grid node equally described inward THIS POST as well as thence execute bellow given tests. 

Note : Please withdraw meshing explorer related code materials from bellow given script if human face upwards whatever related fault equally it is non real stable alongside selenium grid.

fillingForm.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit; import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  populace flat fillingForm {   // Used dataProvider parameter to instruct information from @DataProvider tone method.  // Can convey object array data(browser name, First Name as well as Last Name) from getNames method.  @Test(dataProvider = "getNames")  populace void gmailLogin(String browser, String fName, String lName) throws MalformedURLException, InterruptedException {   System.out.println(browser);    // Initialize DesiredCapabilities null.   DesiredCapabilities cap = null;    // Initialize browser driver equally per information received from getNames().   if (browser.equals("firefox")) {    // Set firefox browser capabilities for windows platform.    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    // Set chrome browser capabilities for windows platform.    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("iexplore")) {    // Set IE browser capabilities for windows platform.    cap = DesiredCapabilities.internetExplorer();    cap.setBrowserName("internet explorer");    cap.setPlatform(Platform.WINDOWS);   }    // Initialize RemoteWebDriver on grid 2 node alongside browser capability.   RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);    // Pause examine for xx minutes to cheque precisely how many concurrent browsers opening at same time.   Thread.sleep(20000);    // Open URL inward requested browsers of node as well as execute examine steps.   driver.get("aa/search?q=how-to-configure-selenium-grid-2-node");   driver.findElement(By.name("FirstName")).sendKeys(fName);   driver.findElement(By.name("LastName")).sendKeys(lName);    // Close browser instance.   driver.quit();  }   // Created @DataProvider tone method to provide data(browser name, First Name as well as Last Name) for test  @DataProvider(parallel = true)  populace Object[][] getNames() {   Object data[][] = novel Object[3][3];   data[0][0] = "firefox";   data[0][1] = "FirstName1";   data[0][2] = "LastName1";    data[1][0] = "chrome";   data[1][1] = "FirstName2";   data[1][2] = "LastName2";    data[2][0] = "iexplore";   data[2][1] = "FirstName3";   data[2][2] = "LastName3";    render data;  } }

Calc.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit;  import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.Assert; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  populace flat Calc {   // Used dataProvider parameter to instruct information from @DataProvider tone method.  // Can convey object array data(browser name, num1, num2 as well as expected total value) from getNames method.  @Test(dataProvider = "getCalcData")  populace static void calcTest(String browser, String num1, String num2, String expSumNum) throws MalformedURLException, InterruptedException {    System.out.println(browser);    // Initialize DesiredCapabilities null.   DesiredCapabilities cap = null;    // Initialize browser driver equally per information received from getCalcData().   if (browser.equals("firefox")) {    // Set firefox browser capabilities for windows platform.    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    // Set chrome browser capabilities for windows platform.    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("iexplore")) {    // Set IE browser capabilities for windows platform.    cap = DesiredCapabilities.internetExplorer();    cap.setBrowserName("internet explorer");    cap.setPlatform(Platform.WINDOWS);   }    // Initialize RemoteWebDriver on grid 2 node alongside browser capability.   RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);    // Pause examine for xx minutes to cheque precisely how many concurrent browsers opening at same time.   Thread.sleep(20000);    driver.get("aa/search?q=how-to-configure-selenium-grid-2-node");   driver.findElement(By.xpath("//input[@id='Resultbox']")).clear();   driver.findElement(By.xpath("//input[@id='" + num1 + "']")).click();   driver.findElement(By.xpath("//input[@id='plus']")).click();   driver.findElement(By.xpath("//input[@id='" + num2 + "']")).click();   driver.findElement(By.xpath("//input[@id='equals']")).click();    // Get actual effect as well as compare alongside expected result.   String strResult = driver.findElement(By.xpath("//input[@id='Resultbox']")).getAttribute("value");   int actualResult = Integer.parseInt(strResult);   int expectedResult = Integer.parseInt(expSumNum);   Assert.assertEquals(actualResult, expectedResult);    // Close browser instance.   driver.quit();  }   // Created @DataProvider tone method to provide data(browser name, num1, num2 as well as expected total value) for test  @DataProvider(parallel = true)  populace Object[][] getCalcData() {   Object data[][] = novel Object[3][4];   data[0][0] = "firefox";   data[0][1] = "1";   data[0][2] = "3";   data[0][3] = "4";    data[1][0] = "chrome";   data[1][1] = "2";   data[1][2] = "5";   data[1][3] = "7";    data[2][0] = "iexplore";   data[2][1] = "3";   data[2][2] = "5";   data[2][3] = "8";    render data;  } }

testng.xml

<suite name="My Test Suite" verbose="2" parallel="classes" thread-count="15">  <test name="Selenium Grid Test">   <classes>    <class name="Grid2.fillingForm" />    <class name="Grid2.Calc" />   </classes>  </test> </suite>

Create higher upwards given 2 software automation tests inward eclipse as well as give away its execution alongside higher upwards testng.xml file. It tin john launch 1 IE browser at a fourth dimension but i wants to execute my both tests on 2 IE browsers concurrently.

To launch your higher upwards 2 software automation tests on vi concurrent browser at same time, yous yell for to restart your node alongside bellow given command where i cause got set maxInstances=2 for all 3 browser instances.

• Close electrical flow node using CTRL+c primal press
• Run bellow given command to register node alongside hub with maxInstances=2 for all 3 browser instances.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -browser browserName=iexplore,maxInstances=2

• maxInstances=2 : It volition say node to ready 2 browsers instances for that specific browser.

Now access URL = http://localhost:4444/grid/console inward browser. It volition looks similar bellow.

Rerun your testng.xml file using higher upwards node configuration. It volition launch vi browsers (2 FF, 2 Chrome as well as 2 IE) at a fourth dimension as well as run both tests on all of them concurrently.

Note : You tin john laid whatever value for maxInstances fro whatever browser. 

Example : -browser browserName=firefox,maxInstances=25 volition say node to laid 25 firefox browser instances.

This way yous tin john command max release of allowed browser instances of same browser using maxInstances configuration parameter of grid 2.

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Usage Of Maxsession Inwards Grid Two To Laid Upward Publish Of Max Session Of Browser Instances

We learnt close "maxInstances" inward my PREVIOUS POST. "maxSession" is to a greater extent than or less other configuration parameter which helps to gear upwardly max allowed sessions to run at a fourth dimension on that specific node. Here session way publish of concurrent browsers inward price of all browser. It volition non allow that specific node to opened upwardly browser to a greater extent than than value of "maxSession". Let's sympathise alongside really uncomplicated instance scenario.

Example scenario : Let's see uncomplicated example. I wants to run two software automation attempt out cases as well as both should run on two dissimilar browsers concurrently(Firefox as well as Google chrome) using selenium Grid. But my to a greater extent than or less other status is, Node should opened upwardly max two browser at a time. In this case, only "maxInstances" volition non industrial plant for me but i take to exercise maxSession" inward node configuration. In this instance i tin gear upwardly maxSession = two for node to confine only two browsers at a time. Let's sympathise how it industrial plant alongside practical example.

Create bellow given software automation  test cases inward eclipse alongside given testng.xml file.

Note : Please take Internet explorer related code materials from bellow given script if facial expression upwardly whatever related fault every bit it is non really stable alongside selenium grid.

fillingForm.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit; import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  world shape fillingForm {   // Used dataProvider parameter to acquire information from @DataProvider notation method.  // Can convey object array data(browser name, First Name as well as Last Name) from getNames method.  @Test(dataProvider = "getNames")  world void gmailLogin(String browser, String fName, String lName) throws MalformedURLException, InterruptedException {   System.out.println(browser);    // Initialize DesiredCapabilities null.   DesiredCapabilities cap = null;    // Initialize browser driver every bit per information received from getNames().   if (browser.equals("firefox")) {    // Set firefox browser capabilities for windows platform.    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    // Set chrome browser capabilities for windows platform.    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   } /*else if (browser.equals("iexplore")) {    // Set IE browser capabilities for windows platform.    cap = DesiredCapabilities.internetExplorer();    cap.setBrowserName("internet explorer");    cap.setPlatform(Platform.ANY);    cap.setVersion("8");   }*/    // Initialize RemoteWebDriver on grid two node alongside browser capability.   RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);    // Pause attempt out for xx minutes to banking concern tally precisely how many concurrent browsers opening at same time.   Thread.sleep(20000);    // Open URL inward requested browsers of node as well as execute attempt out steps.   driver.get("aa/search?q=usage-of-maxinstances-in-grid-2-to-set");   driver.findElement(By.name("FirstName")).sendKeys(fName);   driver.findElement(By.name("LastName")).sendKeys(lName);    // Close browser instance.   driver.quit();  }   // Created @DataProvider notation method to provide data(browser name, First Name as well as Last Name) for test  @DataProvider(parallel = true)  world Object[][] getNames() {   Object data[][] = novel Object[2][3];   data[0][0] = "firefox";   data[0][1] = "FirstName1";   data[0][2] = "LastName1";    data[1][0] = "chrome";   data[1][1] = "FirstName2";   data[1][2] = "LastName2"; /*   data[2][0] = "iexplore";   data[2][1] = "FirstName3";   data[2][2] = "LastName3"; */   render data;  } }

Calc.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit;  import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.Assert; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  world shape Calc {   // Used dataProvider parameter to acquire information from @DataProvider notation method.  // Can convey object array data(browser name, num1, num2 as well as expected total value) from getNames method.  @Test(dataProvider = "getCalcData")  world static void calcTest(String browser, String num1, String num2, String expSumNum) throws MalformedURLException, InterruptedException {    System.out.println(browser);    // Initialize DesiredCapabilities null.   DesiredCapabilities cap = null;    // Initialize browser driver every bit per information received from getCalcData().   if (browser.equals("firefox")) {    // Set firefox browser capabilities for windows platform.    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    // Set chrome browser capabilities for windows platform.    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   } /*else if (browser.equals("iexplore")) {    // Set IE browser capabilities for windows platform.    cap = DesiredCapabilities.internetExplorer();    cap.setBrowserName("iexplore");    cap.setPlatform(Platform.ANY);    cap.setVersion("8");   }*/    // Initialize RemoteWebDriver on grid two node alongside browser capability.   RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);    // Pause attempt out for xx minutes to banking concern tally precisely how many concurrent browsers opening at same time.   Thread.sleep(20000);    driver.get("aa/search?q=usage-of-maxinstances-in-grid-2-to-set");   driver.findElement(By.xpath("//input[@id='Resultbox']")).clear();   driver.findElement(By.xpath("//input[@id='" + num1 + "']")).click();   driver.findElement(By.xpath("//input[@id='plus']")).click();   driver.findElement(By.xpath("//input[@id='" + num2 + "']")).click();   driver.findElement(By.xpath("//input[@id='equals']")).click();    // Get actual consequence as well as compare alongside expected result.   String strResult = driver.findElement(By.xpath("//input[@id='Resultbox']")).getAttribute("value");   int actualResult = Integer.parseInt(strResult);   int expectedResult = Integer.parseInt(expSumNum);   Assert.assertEquals(actualResult, expectedResult);    // Close browser instance.   driver.quit();  }   // Created @DataProvider notation method to provide data(browser name, num1, num2 as well as expected total value) for test  @DataProvider(parallel = true)  world Object[][] getCalcData() {   Object data[][] = novel Object[2][4];   data[0][0] = "firefox";   data[0][1] = "1";   data[0][2] = "3";   data[0][3] = "4";    data[1][0] = "chrome";   data[1][1] = "2";   data[1][2] = "5";   data[1][3] = "7"; /*   data[2][0] = "iexplore";   data[2][1] = "3";   data[2][2] = "5";   data[2][3] = "8"; */   render data;  } }

testng.xml

<suite name="My Test Suite" verbose="2" parallel="classes" thread-count="6">  <test name="Selenium Grid Test">   <classes>    <class name="Grid2.fillingForm" />    <class name="Grid2.Calc" />   </classes>  </test> </suite>

without using "maxInstances"
First of all let's run our software automation  test without using "maxInstances" as well as therefore nosotros volition exercise "maxInstances" inward node configuration to banking concern tally how it works.

• Start grid two hub. You tin persuasion THIS POST to know how to inaugural of all hub.
• Open ascendency prompt as well as navigate to D: campaign inward ascendency prompt where selenium server jolt file, IEDriver server file as well as chromedriver file is stored.
• Start grid two node using bellow given command. You tin persuasion THIS POST to know prerequisite to inaugural of all grid two node.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -browser browserName=iexplore,maxInstances=2

using "maxInstances"

Now execute inward a higher house given 2 software automation  test cases using testng.xml file as well as detect attempt out execution sequence. It volition opened upwardly iv browsers at the same fourth dimension as well as execute both attempt out cases parallel inward all iv browsers.

• Close electrical current running node using CTRL+c keys.
• Start node using bellow given command. Now nosotros stimulate got used -maxSession two inward bellow given ascendency to bound max whatever two browser instances at a time.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -browser browserName=iexplore,maxInstances=2 -maxSession 2

Now run testng.xml file to execute inward a higher house given 2 software automation  test cases as well as detect attempt out execution sequence. It volition opened upwardly only two browsers at a fourth dimension as well as two requests volition hold off for slot to travel costless every bit shown inward bellow given image. You tin meet it past times refreshing console page when your tests inaugural of all execution.

Once previous two requests volition consummate execution as well as unopen browser instance, Remaining two requests volition travel executed past times opening novel two browser instances. Means y'all volition meet max two browser instances at a fourth dimension on your grid node machine to execute tests.

This way, maxSession volition gear upwardly max allowed browsers at a fourth dimension to execute attempt out on grid node.

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Set Selenium Grid Node Timeout When Running Webdriver Test

"timeout" is node configuration parameter using which you lot tin set timeout for selenium grid node browser session. If you lot laid upwardly "-timeout 20000" as well as run test, If node browser non receiving whatsoever ascendency as well as rest ideal for 20 seconds then it volition endure closed automatically past times -timeout parameter. That agency it tells node browser -> "wait max xx seconds to have whatsoever ascendency else unopen browser as well as clear session". Lets accept practical representative to understand "timeout" clearly.

Earlier nosotros learnt usage of "maxInstances" in THIS POST and "maxSession" in THIS POST to configure selenium grid node hence i promise you lot are good aware close usage of both these parameters equally nosotros are going to utilization them inwards this representative too. Now let's practise 2 selenium software automation bear witness cases equally bellow as well as and hence elbow grease to run them without timeout as well as and hence amongst timeout parameter.

fillingForm.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit; import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  populace shape fillingForm {   @Test(dataProvider = "getNames")  populace void gmailLogin(String browser, String fName, String lName) throws MalformedURLException, InterruptedException {      System.out.println(browser);      DesiredCapabilities cap = null;    if (browser.equals("firefox")) {    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   }    RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);    driver.get("aa/search?q=usage-of-maxinstances-in-grid-2-to-set");   driver.findElement(By.name("FirstName")).sendKeys(fName);   driver.findElement(By.name("LastName")).sendKeys(lName);    // Commented driver.quit(); to verify browser is existence closed automatically past times timeout or not.   // driver.quit();  }   @DataProvider(parallel = true)  populace Object[][] getNames() {   Object data[][] = novel Object[2][3];   data[0][0] = "firefox";   data[0][1] = "FirstName1";   data[0][2] = "LastName1";    data[1][0] = "chrome";   data[1][1] = "FirstName2";   data[1][2] = "LastName2";    provide data;  } }

Calc.java

package Grid2;  import java.net.MalformedURLException; import java.net.URL; import java.util.concurrent.TimeUnit; import org.openqa.selenium.By; import org.openqa.selenium.Platform; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.testng.Assert; import org.testng.annotations.DataProvider; import org.testng.annotations.Test;  populace shape Calc {   @Test(dataProvider = "getCalcData")  populace static void calcTest(String browser, String num1, String num2, String expSumNum) throws MalformedURLException, InterruptedException {    System.out.println(browser);    DesiredCapabilities cap = null;    if (browser.equals("firefox")) {    cap = DesiredCapabilities.firefox();    cap.setBrowserName("firefox");    cap.setPlatform(Platform.WINDOWS);   } else if (browser.equals("chrome")) {    cap = DesiredCapabilities.chrome();    cap.setBrowserName("chrome");    cap.setPlatform(Platform.WINDOWS);   }    RemoteWebDriver driver = novel RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), cap);   driver.manage().window().maximize();   driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);    driver.get("aa/search?q=usage-of-maxinstances-in-grid-2-to-set");   driver.findElement(By.xpath("//input[@id='Resultbox']")).clear();   driver.findElement(By.xpath("//input[@id='" + num1 + "']")).click();   driver.findElement(By.xpath("//input[@id='plus']")).click();   driver.findElement(By.xpath("//input[@id='" + num2 + "']")).click();   driver.findElement(By.xpath("//input[@id='equals']")).click();    String strResult = driver.findElement(By.xpath("//input[@id='Resultbox']")).getAttribute("value");   int actualResult = Integer.parseInt(strResult);   int expectedResult = Integer.parseInt(expSumNum);   Assert.assertEquals(actualResult, expectedResult);    // Commented driver.quit(); to verify browser is existence closed automatically past times timeout or not.   // driver.quit();  }   @DataProvider(parallel = true)  populace Object[][] getCalcData() {   Object data[][] = novel Object[2][4];   data[0][0] = "firefox";   data[0][1] = "1";   data[0][2] = "3";   data[0][3] = "4";    data[1][0] = "chrome";   data[1][1] = "2";   data[1][2] = "5";   data[1][3] = "7";    provide data;  } }

testng.xml

<suite name="My Test Suite" verbose="2" parallel="classes" thread-count="6">  <test name="Selenium Grid Test">   <classes>    <class name="Grid2.fillingForm" />    <class name="Grid2.Calc" />   </classes>  </test> </suite>

Test Configuration

• 2 Software Automation Test cases : fillingForm.java and Calc.java
• driver.quit(); is commented from both software automation test cases hence webdriver volition non unopen driver instance.
• Both tests are configured to run inwards parallel using selenium grid 2.
• Our aim is to run both software automation test cases inwards parallel inwards 2 browsers as well as also it should run max 2 browsers at a fourth dimension hence nosotros volition launch node amongst -maxSession 2. 

Running bear witness without timeout for node

First of all nosotros volition launch node without timeout parameter as well as execute higher upwardly bear witness on it to cheque node browser condition on completion of test.

• Start grid hub equally described inwards THIS POST.
• Open ascendency prompt as well as navigate to D: elbow grease inwards ascendency prompt where selenium server jolt file, IEDriver server file as well as chromedriver file is stored.
• Start grid node with -maxSession 2 to trammel 2 max browsers only at a time. timeout is non used. Launch node using bellow given command.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -browser browserName=iexplore,maxInstances=2 -maxSession 2

Now run higher upwardly bear witness from testng.xml file. It volition launch 2 browsers to run both software automation bear witness cases parallel. Other 2 pending requests on node volition hold back for electrical flow session to endure closed equally bellow. 

But hither you lot know, We conduct maintain commented driver.quit(); from both bear witness cases hence tests volition endure executed successfully on both driver instances but driver instances volition non closed. It volition remain equally it is for five minutes (node default timeout period) hence remaining 2 tests volition rest inwards queue for five minutes equally no slot is complimentary on node to run test. When default timeout fourth dimension reached, both electrical flow driver instances volition endure closed as well as and hence remaining 2 requests volition kickoff execution past times launching novel driver instances on node.

Running bear witness amongst timeout for node

To reset node timeout, We tin utilization timeout parameter when launching node. You tin laid upwardly your desired timeout for node hence that it tin kickoff side past times side bear witness if driver instance rest steady for given time. Let's configure node amongst timeout to cheque how it plant inwards higher upwardly scenario.

• Restart grid hub.
• Restart grid node using bellow command. Here nosotros conduct maintain used -timeout 20000 (20 seconds) at the destination of command. You tin laid upwardly timeout equally per your requirement.

Note : Meaning of -timeout 20000 : During bear witness execution if browser volition remain steady for xx seconds, Node volition unopen it forthwith afterward 20 seconds.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -browser browserName=iexplore,maxInstances=2 -maxSession 2 -timeout 20000

Now run higher upwardly tests from testng.xml file. Both software automation tests volition endure executed, as well as hence browsers volition rest steady for xx seconds as well as and hence both of them volition endure closed automatically as well as novel requests volition kickoff execution on complimentary slots.

This way, node timeout tin aid you lot to unopen browser instance if it is stuck during bear witness execution.

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Running Multiple Nodes Of Selenium Grid On Same Motorcar To Operate Webdriver Test

Earlier nosotros learnt, How to showtime unmarried node on i machine every bit described inwards THIS POST. Now our side past times side enquiry is "can nosotros run multiple selenium grid nodes on same machine?". Answer is yes. Selenium grid allows us to run multiple nodes on same machine. In general, It is non required to run multiple nodes on same machine every bit nosotros tin lavatory command disclose of browsers every bit described inwards THIS POST in addition to disclose of browser sessions inwards THIS POST. So it is tardily to configure i node on i machine in addition to run bear witness on it every bit per requirements. But withal let's come across an example of running multiple nodes on same machine.

As yous know, Selenium grid node is using port to brain asking from hub in addition to ship reply back. Till now, We accept used 5566 port to run node inwards all previous examples of selenium grid. So if i node is already running on 5566 port in addition to yous wants to showtime 2d node on same machine in addition to thus yous bespeak to utilization other ship 5567 every bit nosotros tin lavatory run only i node per port number. Let's showtime i hub in addition to ii nodes on same machine in addition to run tests on both of them.

Start selenium grid hub

Start selenium grid hub every bit described inwards THIS POST.

Register selenium grid node 1

Open command prompt in addition to run bellow given command inwards it to showtime 1st node. It volition configure node 1 to run ii Firefox in addition to ii chrome browser instances but max ii instances at a time.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5566 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -maxSession 2

Register selenium grid node 2

Open but about other command prompt in addition to run bellow given command inwards it to showtime 2d node. It volition configure node ii to run ii Firefox in addition to ii chrome browser instances but max ii instances at a time.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.ie.driver="D:/IEDriverServer.exe" -Dwebdriver.chrome.driver="D:/chromedriver.exe" -hub http://localhost:4444/grid/register -port 5567 -browser browserName=firefox,maxInstances=2 -browser browserName=chrome,maxInstances=2 -maxSession 2

Check both nodes running properly or not

Now if yous access URL : http://localhost:4444/grid/console , It volition demo yous both nodes running on dissimilar ports every bit shown inwards bellow given image. That agency your nodes are registered alongside hub in addition to get to use.

Create in addition to run tests on both nodes of grid

We tin lavatory utilization bear witness cases of "timeout" bear witness inwards this example.

• Create bear witness cases(fillingForm.java in addition to Calc.java) in addition to testng.xml files every bit described inwards PREVIOUS POST.
• un-comment driver.quit(); from both bear witness cases.

Now run tests from testng.xml file. It volition launch iv browsers instances(2 instances on each node) in addition to showtime executing tests on it.

If yous refresh grid console page during bear witness execution, it volition demo yous that ii sessions are running on node 1 in addition to ii sessions are running on node ii every bit shown inwards bellow image.

This way nosotros tin lavatory run multiple nodes on same machine to execute selenium webdriver tests.

Note : I don't know if this is wrong way but i know it is possible in addition to it runs your tests on both nodes. I tried it in addition to plant for me thus i accept shared this information alongside you. Let me know if anyone of yous facial expression upwardly whatsoever consequence inwards this combination.

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Launch Selenium Grid Hub As Well As Nodes Using Json Config File

What is JSON?

"JavaScript Object Notation" is amount shape of JSON together with it is best agency to shop data inwards an organized, easy-to-access together with slow to read together with empathize manner. Here nosotros tin lavatory exercise it to store selenium grid config parameters.

What is usage of JSON inwards selenium grid?

Well.. Answer is :  When nosotros start selenium grid hub together with nodes manually from ascendance prompt, We require to laid many dissimilar parameters for grid hub together with nodes similar port, browserName, maxInstances, platform, maxSession etc.. from ascendance prompt. You volition honor all config parameter's illustration links on Selenium Grid tutorial page. Instead of feeding all config parameters guide from ascendance prompt, We tin lavatory store selenium grid hub together with nodes config parameters inwards .json file together with and thence tin lavatory exercise that file to root hub together with nodes alongside required configuration.

Let's larn it practically how to exercise .json files for selenium grid hub together with node together with and thence how to run them.

Scenario : Consider illustration of "maxSession" every bit described on Usage of maxSession. We wants to run two testify cases on two dissimilar browsers(Firefox together with Chrome) but max two sessions at a fourth dimension using selenium grid.

Creating .json file for selenium grid hub

Follow the steps given bellow to create GridHub.json file.

• Create novel notepade(.txt) file.
• Copy-paste bellow given code inwards it.

{         "host": null,         "port": 4444,         "newSessionWaitTimeout": -1,         "servlets" : [],         "prioritizer": null,         "capabilityMatcher": "org.openqa.grid.internal.utils.DefaultCapabilityMatcher",         "throwOnCapabilityNotPresent": true,         "nodePolling": 5000,                  "cleanUpCycle": 5000,         "timeout": 300000,         "maxSession": five }

• Save file alongside name GridHub.json inwards D: drive.

Creating .json file for selenium grid node

Follow the steps given bellow to exercise GridNode.json file.

• Create novel notepade(.txt) file.
• Copy-paste bellow given code inwards it.

{   "capabilities":       [                 {           "browserName": "firefox",           "maxInstances": 2,    "acceptSslCerts": true,      "javascriptEnabled": true,    "platform": "WINDOWS",           "seleniumProtocol": "WebDriver"         },         {           "browserName": "chrome",           "maxInstances": 2,    "platform": "WINDOWS",           "seleniumProtocol": "WebDriver"         }               ],   "configuration":   {     "proxy": "org.openqa.grid.selenium.proxy.DefaultRemoteProxy",     "maxSession": 2,     "port": 5555,     "host": ip,     "register": true,     "registerCycle": 5000,     "hubPort": 4444,     "hubHost": ip   } }

• Save file alongside name GridNode.json in D: drive.

Note : You tin lavatory alter config parameters similar hubPort, maxSession, browserName, maxInstances etc.. inwards higher upwards given files every bit per your requirements.

Start hub together with node using JSON files

I hope, selenium server standalone jounce file and chromedriver exe file is already available inwards your D: drive. If they are non at that spot together with thence download both files together with pose inwards D: drive.

- Start grid hub

• Open ascendance prompt.
• Navigate to D: motility together with run bellow given command.

java -jar selenium-server-standalone-2.52.0.jar -role hub -hubConfig GridHub.json

Here, -hubConfig GridHub.json volition charge hub config parameters to root selenium grid hub.

It volition root selenium grid hub.

- Start grid node

• Open ascendance prompt.
• Navigate to D: drive together with run bellow given command.

java -jar selenium-server-standalone-2.52.0.jar -role node -Dwebdriver.chrome.driver="D:/chromedriver.exe" -nodeConfig GridNode.json

Here, -nodeConfig GridNode.json will charge node config parameters to root selenium grid hub.

It volition root selenium grid node.

Now if yous access http://localhost:4444/grid/console URL inwards browser, It volition demo yous grid configuration alongside two firefox together with two chrome browsers every bit bellow.

Now yous are laid to run selenium webdriver testify on selenium grid.

Create WebDriver testify together with run using grid

Create fillingForm.java, Calc.java together with testng.xml files inwards your eclipse every bit given inwards maxSession Example together with run testify from testng.xml file. It volition root running on grid.

This agency yous tin lavatory exercise JSON file to launch selenoum grid hub together with node configuration.

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