Test result trends in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable test result trend reporting in Jenkins pipeline.

Jenkins

post {
  always {
    junit '[1]'
  }
}

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

Acoverage-report/*.html

Btest-results/*.xml

Cbuild.log

Dartifact.zip

Attempts:

3 left

💡 Hint

Common Mistakes

Using a log file path instead of test result XML files.

Using coverage reports or artifacts instead of test results.

The junit step in Jenkins expects the path to the test result XML files, usually matching test-results/*.xml.

2fill in blank

medium

Complete the code to archive test result reports after the build.

Jenkins

archiveArtifacts artifacts: '[1]', fingerprint: true

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

Atest-results/*.xml

Boutput/*.txt

Ccoverage/*.html

Dbuild.log

Attempts:

3 left

💡 Hint

Common Mistakes

Archiving log files or unrelated reports instead of test results.

Using incorrect file patterns.

Archiving test result XML files allows Jenkins to keep a record of test reports for trend analysis.

3fill in blank

hard

Fix the error in the pipeline code to correctly publish test result trends.

Jenkins

pipeline {
  agent any
  stages {
    stage('Test') {
      steps {
        sh 'run-tests.sh'
      }
    }
  }
  post {
    always {
      junit '[1]'
    }
  }
}

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

Atest-results/*.xml

Btest-results/*.txt

Creports/*.xml

Dbuild.log

Attempts:

3 left

💡 Hint

Common Mistakes

Using text or log files instead of XML files.

Using wrong folder paths.

The junit step requires the path to XML test result files. Using test-results/*.xml matches the correct files.

4fill in blank

hard

Fill both blanks to create a map of test names to their pass/fail status for trend analysis.

Jenkins

def testStatus = [[1]: [2] for test in tests]

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

Atest.name

Btest.status

Ctest.result

Dtest.id

Attempts:

3 left

💡 Hint

Common Mistakes

Using test IDs instead of names as keys.

Using incorrect properties for status.

To map test names to their status, use test.name as key and test.status as value.

5fill in blank

hard

Fill all three blanks to filter and map only failed tests for detailed reporting.

Jenkins

def failedTests = [[1]: [2] for [3] in tests if [2] == 'FAILED']

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

Atest.name

Btest.status

Ctest

Dresult

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names in the loop.

Filtering on incorrect status values.

Use test.name as key, test.status as value, and iterate with test variable to filter failed tests.

Practice

1. What is the main purpose of test result trends in Jenkins?

easy

A. To show how test results change over time

B. To run tests faster

C. To deploy applications automatically

D. To create new test cases

Solution

1. Step 1: Understand test result trends concept

   Test result trends track test outcomes across multiple builds to see progress or issues.

2. Step 2: Identify the main purpose

   The main goal is to observe changes in test results over time, helping catch problems early.

3. Final Answer:

   To show how test results change over time -> Option A

4. Quick Check:

   Test result trends = show changes over time [OK]

Hint: Trends track test results over builds, not speed or deployment [OK]

Common Mistakes:

• Confusing trends with deployment automation
• Thinking trends create tests
• Assuming trends speed up tests

2. Which Jenkins plugin is required to publish test result trends from JUnit XML reports?

easy

A. Git plugin

B. Docker plugin

C. Pipeline plugin

D. JUnit plugin

Solution

1. Step 1: Identify plugin for JUnit XML reports

   JUnit plugin in Jenkins processes JUnit XML test reports and generates test result trends.

2. Step 2: Confirm plugin role

   Only the JUnit plugin handles test result publishing and trend visualization from JUnit reports.

3. Final Answer:

   JUnit plugin -> Option D

4. Quick Check:

   JUnit plugin publishes test trends [OK]

Hint: JUnit plugin handles JUnit XML test reports and trends [OK]

Common Mistakes:

• Choosing Git plugin which manages source code
• Selecting Docker plugin unrelated to tests
• Confusing Pipeline plugin with test reporting

3. Given this Jenkins pipeline snippet, what will happen if the junit '**/test-results.xml' step is missing?

pipeline {
  agent any
  stages {
    stage('Test') {
      steps {
        sh 'run-tests.sh'
        junit '**/test-results.xml'
      }
    }
  }
}

medium

A. Test results will be published and trends shown

B. No test results will be published, no trends available

C. Pipeline will fail with syntax error

D. Tests will not run at all

Solution

1. Step 1: Understand the role of junit step

   The junit step publishes test results from XML files and enables trend graphs.

2. Step 2: Analyze missing junit step effect

   Without junit, test results are not published, so no trends appear, but tests still run.

3. Final Answer:

   No test results will be published, no trends available -> Option B

4. Quick Check:

   Missing junit step = no published results [OK]

Hint: Without junit step, no test results or trends appear [OK]

Common Mistakes:

• Thinking pipeline fails without junit step
• Assuming tests won't run without junit
• Believing trends show without publishing results

4. You added the junit '**/results.xml' step but Jenkins shows no test trends. What is the most likely cause?

medium

A. The XML file path pattern is incorrect or no files match

B. The Jenkins server is offline

C. The pipeline syntax is invalid

D. The tests did not run

Solution

1. Step 1: Check file path pattern for test reports

   If the pattern **/results.xml does not match any files, no results are published.

2. Step 2: Confirm Jenkins behavior on missing files

   Jenkins silently skips publishing if no matching files found, so no trends appear.

3. Final Answer:

   The XML file path pattern is incorrect or no files match -> Option A

4. Quick Check:

   Wrong file path = no test trends [OK]

Hint: Verify XML file path matches actual test report location [OK]

Common Mistakes:

• Assuming Jenkins is offline without checking
• Blaming pipeline syntax without error
• Thinking tests must fail to hide trends

5. You want to track test result trends for multiple test suites in Jenkins, each producing separate JUnit XML files in different folders. How should you configure the junit step to show combined trends?

hard

A. Manually merge XML files before publishing

B. Use multiple junit steps, one per folder

C. Use a single junit step with a combined glob pattern like '**/test-results/*.xml'

D. Publish only one folder's results to avoid confusion

Solution

1. Step 1: Understand how junit step handles multiple files

   The junit step accepts glob patterns to include multiple XML files from different folders.

2. Step 2: Choose best practice for combined trends

   Using a single junit step with a combined pattern like '**/test-results/*.xml' publishes all results together, enabling combined trends.

3. Final Answer:

   Use a single junit step with a combined glob pattern like '**/test-results/*.xml' -> Option C

4. Quick Check:

   Single junit step + combined pattern = combined trends [OK]

Hint: Use one junit step with glob pattern to include all XML files [OK]

Common Mistakes:

• Using multiple junit steps causing separate trends
• Trying to merge XML files manually
• Ignoring some test suites results