What is contract testing

What is contract testing?

Contract testing is famous in microservices world. When we consider less numbers of microservices,  then contract testing is not so necessary.However when you look at the Amazon or Netflix microservices mesh, it is countless. Such cases it is extremely difficult for developer or tester to maintain unit/automation test suite as per the microservices development chnages.
Contract testing is the best possible solution currently offered for this situation. In contract testing, a mocked service is created to represent the provider.  There are commercial or opensource tools available to stimulate this. In short, contract is set of predefined requests and responses created by automation or developer team to do their testing.

How to read pdf content in java for automation project

How to read pdf content in java?

Apache PDFBox and FontBox jar available can be useful here. Add these two libraries to your Maven Pom.xml or build.gradle dependencies.
Then write java code to parse your PDF files to create POJOs.
What is POJO in javaPOJO stands for Plain java object and it has not restrictions or class path dependency.

What is google App Engine

What is Google’s App Engine ?

Google provides platform as service or PaaS via Google’s App Engine.App Engine is a cloud computing platform where development and hosting of applications can be done.Other feature is App engine scales up on demand basis when the requests are more.
App Engine supports almost all development technologies like Go, Java , Python, .NET, ruby.
Python web frameworks like Flask, Django all can run on App Engine.

DevOps vs DevSecOps vs NetOps

What is DevOps vs DevSecOps vs NetOps ?

DevOps is the practice of using set of tools, processes and practices to get good agility in software implementation to customers. It combines Dev (software development ) and Ops (information operations). DevOps shortens the development lifecycles and provides Continous Integration & Delivery. 
DevSecOps is when security features are included in DevOps CI/CD flow.
NetOps is when network services are packaged to DevOps.

Jenkins job vs pipeline

What is Jenkins jobs and Jenkins pipeline ?

Jenkins jobs and Jenkins pipeline are essentially same, however pipeline is more staged flow of jobs. For Jenkins pipeline, Jenkinsfile is used.
What is Jenkinsfile?Jenkinsfile is a text file placed in the root project directory. The Jenkinsfile has multiple stages like build, unit test, sonar test, functional,  regression, integration,  performance testing, deployment etc.

What is OpenCV

What is opencv library ?

Open Source Computer Vision Library (OpenCV) is a open source computer vision and machine learning software library. 

OpenCV is a BSD-licensed product, since it is BSD licenses it can be utilized or modified for anyOpenCV businesses use. Sikuli has leveraged OpenCV for image recognition.

OpenCV was built to provide a common infrastructure for computer vision applications 

OpenCV helps to accelerate the use of machine perception in the commercial products.