Testing shared libraries in Jenkins - Mini Project: Build & Apply

Testing Shared Libraries in Jenkins

📖 Scenario: You are working on a Jenkins pipeline project that uses a shared library to reuse common code across multiple pipelines. To ensure your shared library functions correctly, you want to write a simple test pipeline that calls a function from the shared library and verifies its output.

🎯 Goal: Build a Jenkins pipeline script that tests a shared library function by calling it and printing the result.

📋 What You'll Learn

Create a Jenkins pipeline script that calls a shared library function named greet.

Add a variable to hold the name to greet.

Call the greet function with the name variable.

Print the greeting message returned by the greet function.

💡 Why This Matters

🌍 Real World

Shared libraries in Jenkins help teams reuse code for common tasks like notifications, deployments, and validations across many pipelines.

💼 Career

Knowing how to test shared libraries ensures your pipeline code is reliable and maintainable, a key skill for DevOps engineers and Jenkins administrators.

1

Create a variable for the name to greet

Create a variable called name and set it to the string "Jenkins User".

Jenkins

# Create a variable called name and set it to "Jenkins User"
# Your code here

Need a hint?

Use def name = "Jenkins User" to create the variable.

2

Call the shared library function greet

Call the shared library function greet with the variable name and store the result in a variable called message.

Jenkins

def name = "Jenkins User"
# Call greet(name) and store the result in message
# Your code here

Need a hint?

Use def message = greet(name) to call the function and save the result.

3

Print the greeting message

Use echo to print the variable message.

Jenkins

def name = "Jenkins User"
def message = greet(name)
# Print the message using echo
# Your code here

Need a hint?

Use echo message to print the greeting.

4

Run the pipeline and verify output

Run the pipeline script and verify that the output contains the greeting message Hello, Jenkins User!.

Jenkins

def name = "Jenkins User"
def message = greet(name)
echo message
# Run the pipeline and check output

Need a hint?

Check the Jenkins console output for the greeting message.