References- Getting started with Jenkins Pipeline -https://www.jenkins.io/doc/book/pipeline/ Demo references: -Selenium java repo -> https://github.com/the-test-trove/Selenium-testNg-Maven -Configuring Jenkins job using Maven -> https://github.com/the-test-trove/Selenium-testNg-Maven/blob/main/jenkins_config/Jenkinsfile -API tests using LCC -> https://github.com/the-test-trove/api-tests-lcc -Jenkinsfile -> https://github.com/the-test-trove/api-tests-lcc/blob/master/jenkins_config/Jenkinsfile

1. Pipeline as Code
using Jenkins
Introduction to Jenkins Pipeline in the QE workflow
Anisha Narang
Swapnil Jadhav
Principal Software Quality Engineer | Red Hat QE Lead | Red Hat

2. Agenda:
● Introduction to Jenkins pipelines
● Pipeline Concepts and Syntax
● Making pipelines part of your codebase.
● Demo
● QnA

3. Challenges with Test Automation & CI/CDs
● Frequent releases demand robust regression suite
● Difficulties in managing complexities in Freestyle jobs
● Integration with Dev team’s deployment pipelines
● Migration of QA Jenkins VM
● In-ability to stop/pause jenkins job for user input.

4. What is Jenkins Pipeline?
In Jenkins, a pipeline is a collection of events or jobs which are interlinked with
one another in a sequence. It is a combination of plugins that support the
integration and implementation of continuous delivery pipelines using Jenkins.

5. Why Jenkins Pipeline
● Jenkins file could be stored in SCM
● Single source of pipeline helps multiple users to contribute
● Audit Trail
● Pause/Start Pipeline for user’s inputs
● Easy to accommodate Complex Pipelines using loop, forks
● Easy job restoration during Jenkins Migration
● Resilient for unplanned restarts

6. Pipeline Concepts
Pipeline as Code via the Pipeline specific DSL syntax.
Jenkinsfile Definition of Jenkins pipeline in a text file.
● Pipeline
○ A Pipeline is a user-defined model of a CD pipeline; a Pipeline’s code defines your entire build
process.
● Node
○ A node is a machine which is part of the Jenkins environment and is capable of executing a
Pipeline.
● Stage
○ A stage block defines a conceptually distinct subset of tasks performed through the entire
Pipeline (e.g. "Build", "Test" and "Deploy" stages)
● Step
○ A single task. Fundamentally, a step tells Jenkins what to do at a particular point in time (or
"step" in the process)

7. Pipeline Syntax
● Declarative
● Scripted
A Jenkinsfile can be written using two types of syntax:

9. Declarative Pipeline for Tests

10. Demo
● Getting started with Pipelines
○ Using the Web UI to write Pipeline
○ Configuring Selenium Java repo
○ Publish TestNG reports
● Configuring your jenkins job for API tests with Jenkinsfile
○ Parameterize the job
○ Add stages
○ Publish reports
○ Trigger emails.

11. References:
- Getting started with Jenkins Pipeline -> https://www.jenkins.io/doc/book/pipeline/
Demo references:
- Selenium java repo -> https://github.com/the-test-trove/Selenium-testNg-Maven
- Configuring Jenkins job using Maven -> https://github.com/the-test-trove/Selenium-
testNg-Maven/blob/main/jenkins_config/Jenkinsfile
- API tests using lcc -> https://github.com/the-test-trove/api-tests-lcc
- Jenkinsfile -> https://github.com/the-test-trove/api-tests-
lcc/blob/master/jenkins_config/Jenkinsfile

12. Questions?
@anisha_narang @swapnil_111