Selenium Grid Extras is the enhanced Selenium Grid having more features like auto upgrade of browsers and Video recording enabled for error debugging purposes. Following Additional benefits due to Selenium Grid extras,
Explicitly kills browsers after the test
Increased stability for the automation
Better support for IE on nodes
JVM clearing is done by restarting the Java process on the Nodes by Grid Extras, this happens periodically whenever Node is not in use.
Extras can restart the OS after 15 – 20 tests which boosts the performance on Nodes.
WHAT IS INTERPOLATION VS PROPERTY BINDING IN ANGULAR
Data binding makes the angular applications development very easy.
Data binding helps to do the data synchronization between the template(view/html) and class(typescript code)
There are 4 types of data binding in Angular and are following,
Event binding
Two way data binding
Interpolation
Property binding
What is Interpolation?
For interpolation, double curly braces are used in the template as below,
// app.html is the example for interpolation
<p>{{ name }}</p>
and it stores the variables, then angular checks for the variable and updates the value assigned to the text.
The Typescript app.ts as below to display the name value to app.html.
// app.ts
@Component({
templateUrl: 'app.html',
selector: 'app-test',
})
export class AppComponent {
name = 'Sharath C';
}
What is Property binding?
Property binding helps to set the property of a view element and it uses [] syntax as below
// app.html is the simple for the property binding.
<button [disabled]="buttonIsDisabled"></button>
TypeScript has to be coded as below to pass the property binding to view template. refer the app.ts as example for Typescript passing the property value
3) Test cases can be grouped and parallel testing is allowed.
Automaton testing using Cucumber – Behavior driven development (BDD)
Application behavior is the main focus on BDD. The requirements are written in English which gives more readability and understandability of the requirement.
So any roles in the company (Tester, developer, end user, and techno functional person) can read it and understand it. Also this will reduce the complication in terms of missing requirement or misrepresenting or misunderstanding requirements between different roles (Developer /tester / end user)
Gherkin is a business readable language – refer below for an example. Below feature file is integrated with Selenium and are having user stories as below.
Please refer below – “feature, Scenario, Given, When, And, Then “are the Keywords below to understand on how to write a feature file.
Selenium jenkins integration steps are as below:
Jenkin related steps: 1) start jenkins by running command in DOS prompt (detailed steps in here ) 2) then make sure you are able to access url : localhost:8080 3) then you need to configure jenkins to run the selenium scripts – for that click on “Manage Jenkins” 4) then click on Configure systems 5) Find out the jdk files are installed (usually in C:\ program files … folder path) and copy paste the path in JDK section “JDK Installations” in ” Configure systems” which you are already in. 6) Give JDK name “JAVA_HOME” and provide Java path below in the next field. Selenium related steps: 3) Open eclipse IDE and start new Java project 4) make sure you added selenium jars (Selenium server standalone jar file which you can download add to new project) to support selenium framework for your automation testing. 5) then create a simple selenium script – make sure it is running and completing successfully in Eclipse. 6) Also create a xml file give a name “Xml1.xml” Make sure Run “Xml1.xml” as “TestNG Suite” is working fine in Eclipse. Also notedown the xml file path in selenium project. create a lib folder in that and add all jar files which are required. Commmand prompt: 7) navigate to that project folder in command prompt and set all required classpath like bin and lib etc which are already in xml file folder in selenium project which you got from selenium project in eclipse. 8) then type command “Java org.testng.testNG Xml1.xml” which will display results in command prompt/DOS screen 9) now create a batch file “Batch1.bat” which contains the above command and also a command for compiling as e.g “java -cp bin;lib/* org.testng.testNG Xml1.xml” Jenkins setup to build and run the file: 10) in Jenkins, create a “new item” with selection of “Freestyle project” 11) then select “Advance options” and put the Selenium project home directory path in there. 12) the build trigger section, select Batch file execution option in there, then put the batch file name “Batch1.bat” 13) click and save the new item 14) click on “Build Now” and verify the “Console output”
How to configure Hub & Node machines for selenium parallel test execution
Configuring Hub machine
1) Start the command prompt/DOS prompt
2) Navigate to the folder location where the Selenium server jar file is kept.
3) Type java –jar selenium-server-standalone-[VERSION].jar –role hub
Note: [VERSION] is the one your downloaded version of selenium-server-standalone Jar file.
Your will see the below screen
Selenium Hub
4) Now type: http://localhost:4444 in browser
Your will see the below screen
5) Now type: http://localhost:4444/console in browser
Stay@home projects for kids – implementing many fun programming options using RaspberryPi. Here is how I was able to successfully engage my 9 year old to fun programming that helps her code interactive stories, animations and games using Scratch programming plus other few RaspberryPI projects. Implementation steps include,
OS installation on RaspberryPi : Installing Raspbian on RaspberryPi needs downloading Raspbian image and write that to microSD card.
Setting up RaspberryPI: insert the miscroSD card to RaspberryPi and then connect the basic peripherals like mouse, keyboard, TV screen, and power source.
Now all set to enjoy RaspberryPi during Stay@home time !!!
4. Select the Programming Menu to start Scratch from TV monitor
5. About Scratch – It is block based visual programming language primarily targeted for children. Ref – https://scratch.mit.edu/
