Branch-specific pipeline behavior in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the branch name in the Jenkins pipeline.

Jenkins

pipeline {
    agent any
    stages {
        stage('Build') {
            when {
                branch [1]
            }
            steps {
                echo 'Building branch'
            }
        }
    }
}

Drag options to blanks, or click blank then click option'

A'feature'

B'develop'

C'main'

D'release'

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to use quotes around the branch name

Using the wrong branch name

The branch condition expects the branch name as a string. Here, 'main' is the correct branch to trigger the build.

2fill in blank

medium

Complete the code to run the stage only on the 'develop' branch.

Jenkins

stage('Test') {
    when {
        branch [1]
    }
    steps {
        echo 'Running tests on develop branch'
    }
}

Drag options to blanks, or click blank then click option'

A'develop'

B'main'

C'feature'

D'hotfix'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong branch name

Omitting quotes around the branch name

The when condition with branch 'develop' ensures this stage runs only on the develop branch.

3fill in blank

hard

Fix the error in the branch condition to correctly check for the 'feature' branch.

Jenkins

when {
    branch [1]
}

Drag options to blanks, or click blank then click option'

A'feature'

Bfeature

C"feature"

Dbranch == 'feature'

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes around the branch name

Using an expression instead of a string

The branch name must be a string literal in quotes. Using 'feature' is correct syntax.

4fill in blank

hard

Fill both blanks to run the stage only on branches starting with 'release' and skip others.

Jenkins

stage('Deploy') {
    when {
        expression {
            return env.BRANCH_NAME.[1]('release') [2] true
        }
    }
    steps {
        echo 'Deploying release branch'
    }
}

Drag options to blanks, or click blank then click option'

AstartsWith

B==

C!=

Dcontains

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'contains' instead of 'startsWith'

Not comparing the result to true

The startsWith method checks if the branch name begins with 'release'. The == true ensures the expression returns a boolean.

5fill in blank

hard

Fill all three blanks to create a pipeline that runs different stages for 'main', 'develop', and other branches.

Jenkins

pipeline {
    agent any
    stages {
        stage('Build') {
            when {
                branch [1]
            }
            steps {
                echo 'Building main branch'
            }
        }
        stage('Test') {
            when {
                branch [2]
            }
            steps {
                echo 'Testing develop branch'
            }
        }
        stage('Deploy') {
            when {
                not {
                    branch [3]
                }
            }
            steps {
                echo 'Deploying other branches'
            }
        }
    }
}

Drag options to blanks, or click blank then click option'

A'main'

B'develop'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up branch names in stages

Not using quotes around branch names

The first stage runs on 'main', the second on 'develop', and the deploy stage runs on branches that are not 'develop'.