Making Android Jenkins Builds Fail on Test Failures
Ensuring the quality of your Android app is paramount. A robust testing strategy is crucial, and it’s essential to integrate this into your CI/CD pipeline. This article guides you on configuring Jenkins to fail builds when tests fail, thus reinforcing your quality control process.
Understanding the Problem
Jenkins, a popular automation server, can be used to build, test, and deploy your Android projects. However, without proper configuration, a build may still succeed even if tests fail. This can lead to deployment of code with known issues, negatively impacting your users.
Solution: Integrating Test Failure Checks
To enforce test-driven development and build reliability, Jenkins needs to be configured to fail builds if any tests fail. Here’s how you can achieve this:
1. Utilizing the “JUnit” Plugin
- Install the “JUnit” plugin within Jenkins. It allows you to parse test results and configure build behavior based on test outcomes.
- Navigate to your Jenkins job configuration.
- Under “Post-build Actions,” select “Publish JUnit test result report.”
- Specify the path to your JUnit test report XML file. This file is usually generated during the build process.
2. Implementing “Build Failure Analysis”
- Within the “Post-build Actions” section, enable the “Build Failure Analysis” option.
- Configure the analysis to trigger a build failure if specific criteria are met.
- For example, you can set a threshold for the number of failed tests, or specify that any test failure should result in build failure.
3. Utilizing “Fail the Build” Option
This option is available within the “Post-build Actions” section of your Jenkins job configuration.
- Enable “Fail the Build” if “Test Failure Analysis” is configured to indicate failure.
Example Configuration
Below is an illustrative example using a typical Android project setup.
Jenkins Job Configuration
post {
always {
junit '**/build/test-results/testDebugUnitTest/TEST-*.xml'
// Analysis for test failures
buildFailureAnalysis {
unstableIfFailingSince {
build {
changeSets {
compare {
// Failure on any changes
since {
any()
}
}
}
}
}
failIf {
tests {
failed > 0
}
}
}
// Fail the build on test failure
failTheBuild {
conditions {
failedTestResult()
}
}
}
}
Comparison Table
| Approach | Description | Advantages | Disadvantages |
|---|---|---|---|
| JUnit Plugin | Parses test results and enables build configuration based on tests. | Simple to implement; provides detailed test reporting. | May require manual configuration for specific failure scenarios. |
| Build Failure Analysis | Provides advanced analysis of test results for custom failure conditions. | Flexible configuration; allows complex failure scenarios. | Requires more setup and knowledge of Jenkins configuration. |
Conclusion
By integrating test failure checks into your Jenkins builds, you ensure that only code with passing tests gets deployed. This enhances code quality, prevents regressions, and provides greater confidence in your Android app releases.