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How do you troubleshoot and debug BDD failures in Jenkins?

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\nBehavior-Driven Development (BDD) is a software development approach that uses natural language scenarios to define the expected behavior of a system. BDD can help you create more user-focused, testable, and maintainable code. However, when you use BDD with Jenkins, a popular continuous integration tool, you may encounter some failures that are not easy to troubleshoot and debug. In this article, you will learn how to use some techniques and tools to identify and fix BDD failures in Jenkins.

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Sorin Mirea

Automation Engineer
Wojciech Bulaty

Helping teams accelerate digital transformation and create automated tests faster with API and system simulation

1 Check the console output

The first step to troubleshoot and debug BDD failures in Jenkins is to check the console output of the job that ran your BDD tests. The console output will show you the status of each step, the error messages, and the stack traces of any exceptions. You can also see the logs of any external tools or services that your BDD tests interacted with, such as databases, web servers, or APIs. By analyzing the console output, you can narrow down the possible causes of the failure and locate the source of the problem.

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Wojciech Bulaty

Helping teams accelerate digital transformation and create automated tests faster with API and system simulation
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If you make sure test failure messages are descriptive, it reduces the risk of having to investigate issues in Jenkins or any other build systems. This process has worked well for the teams I have worked with in the past: * (Red) Create a test that is not passing * (Clear message) Make sure the failure message is clear and description so that it does not require further debugging * (Green) Make the BDD test pass by writing the production code

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Sorin Mirea

Automation Engineer
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Additionally, you can also check the test reports generated by your BDD framework, such as Cucumber, SpecFlow, or Behave. These reports can provide more detailed and structured information about the test results, such as the number of passed and failed scenarios, the duration of each scenario, and the steps that caused the failures. Some BDD frameworks also offer visual representations of the test results, such as charts or graphs, which can help you identify patterns or trends in your test runs. You can configure Jenkins to generate and archive these test reports as part of your job configuration, and view them directly from the Jenkins interface or download them as HTML or JSON files.

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2 Use the cucumber reports plugin

The second step to troubleshoot and debug BDD failures in Jenkins is to use the cucumber reports plugin, which is a Jenkins plugin that generates HTML reports from your BDD test results. The cucumber reports plugin can help you visualize the test execution, the pass and fail rate, the duration, and the coverage of your BDD scenarios. You can also drill down into each scenario and see the details of each step, the screenshots, and the embedded data. The cucumber reports plugin can help you identify any gaps or inconsistencies in your BDD scenarios and verify that they match the expected behavior of the system.

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Sorin Mirea

Automation Engineer
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Cucumber reports plugin can also help you compare the results of multiple test runs and track the progress of your BDD testing over time. This can be useful for identifying patterns or trends in the failures and for measuring the effectiveness of your BDD testing strategy.

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3 Run the tests locally

The third step to troubleshoot and debug BDD failures in Jenkins is to run the tests locally on your development machine. Running the tests locally can help you isolate the issue and eliminate any environmental factors that may affect the test results. For example, you can check if the failure is related to the network, the configuration, the dependencies, or the data. You can also use your preferred IDE, debugger, or testing tools to inspect the code, set breakpoints, and step through the test execution. Running the tests locally can help you reproduce and resolve the failure faster and more easily.

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Sorin Mirea

Automation Engineer
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Additionally, if the tests pass locally but fail on Jenkins, it could be a sign of an issue with the Jenkins configuration or plugins.

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4 Use the replay plugin

The fourth step to troubleshoot and debug BDD failures in Jenkins is to use the replay plugin, which is a Jenkins plugin that allows you to rerun a job with the same or modified parameters. The replay plugin can help you verify if the failure is consistent or intermittent, and if it is affected by any changes in the code, the data, or the settings. You can also use the replay plugin to compare the console output and the cucumber reports of different runs and spot any differences or anomalies. The replay plugin can help you confirm and diagnose the failure and test your fixes.

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Sorin Mirea

Automation Engineer
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The replay plugin is indeed a useful tool for Jenkins users to quickly re-run a job with the same or modified parameters to further investigate any failures or issues that have occurred.

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5 Use the email-ext plugin

The fifth step to troubleshoot and debug BDD failures in Jenkins is to use the email-ext plugin, which is a Jenkins plugin that enables you to send customized email notifications based on the job status. The email-ext plugin can help you communicate and collaborate with your team members, stakeholders, and customers about the BDD failures and their impact. You can also use the email-ext plugin to attach relevant information, such as the console output, the cucumber reports, the screenshots, or the logs, to your email notifications. The email-ext plugin can help you inform and involve the right people in the troubleshooting and debugging process.

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Sorin Mirea

Automation Engineer
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That's a great addition! The email-ext plugin can also be configured to send notifications to specific individuals or groups based on the type or severity of the failure. For example, you can set up email triggers for critical failures to notify the development team immediately, while less severe failures can be sent to a less urgent distribution list. This can help streamline the communication process and ensure that the appropriate people are notified in a timely manner. Additionally, the email-ext plugin can be integrated with other plugins, such as the Jenkins HipChat plugin or the Jenkins Slack plugin, to send notifications to your team's chat channels as well.

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6 Use the blue ocean plugin

The sixth step to troubleshoot and debug BDD failures in Jenkins is to use the blue ocean plugin, which is a Jenkins plugin that provides a modern and intuitive user interface for your continuous integration pipeline. The blue ocean plugin can help you visualize and monitor your BDD tests and their results in real time. You can also use the blue ocean plugin to access the console output, the cucumber reports, the replay plugin, and the email-ext plugin from a single dashboard. The blue ocean plugin can help you streamline and simplify your troubleshooting and debugging workflow.

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Sorin Mirea

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It can also display visual representations of the pipeline's health, such as graphs or charts, and provide more context around the test results.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How do you troubleshoot and debug BDD failures in Jenkins?

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1 Check the console output

2 Use the cucumber reports plugin

3 Run the tests locally

4 Use the replay plugin

5 Use the email-ext plugin

6 Use the blue ocean plugin

7 Here’s what else to consider

Behavior-Driven Development (BDD)

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