In Azure DevOps, you can publish code coverage results generated by your tests to visualize and track code coverage trends over time. This is a common practice for monitoring the quality of your codebase and ensuring that your tests adequately cover your code. Here’s how you can publish code coverage results in Azure DevOps:

Note: The exact steps may vary depending on the test framework and technology stack you are using. Below are general guidelines, and you may need to adapt them to your specific setup.

1. Generate Code Coverage Reports:

Before you can publish code coverage results, you need to generate code coverage reports as part of your test runs. The steps for generating code coverage reports depend on your testing framework and programming language. Common testing frameworks that support code coverage include:

• Jacoco: For Java applications.
• Cobertura: For Java applications.
• Istanbul: For JavaScript and Node.js applications.
• Coverlet: For .NET applications.

Ensure that your tests are configured to generate code coverage data during test execution.

2. Publish Code Coverage Data:

Once you have generated code coverage reports, you can publish this data to Azure DevOps. You typically use a dedicated task for this purpose. Here’s how to do it:

1. Add a Publish Code Coverage Task:

   • In your Azure DevOps build pipeline YAML or through the Azure DevOps web interface, add a task for publishing code coverage data. The task may have different names depending on the technology stack you’re using. For example, in a .NET project, you might use the “Publish Code Coverage Results” task.

2. Configure the Task:

   • Configure the task to specify the code coverage data files generated by your tests. You may need to provide the file paths or patterns to locate the code coverage reports.

3. Specify the Code Coverage Publisher:

   • Depending on your testing framework, you may need to specify the code coverage publisher to use. Common publishers include “Cobertura,” “JaCoCo,” or “Istanbul,” depending on the technology stack.

4. Publish the Results:

   • The task will publish the code coverage results to Azure DevOps, making them available for visualization and tracking.

3. View Code Coverage Results:

After code coverage results have been published, you can view them within Azure DevOps:

1. Navigate to the Pipeline Run:

   • Go to the specific build pipeline run where you published the code coverage results.

2. View the Code Coverage Tab:

   • Look for a “Code Coverage” or similar tab within the build pipeline run summary.

3. Analyze the Results:

   • You can analyze code coverage trends, view detailed reports, and identify areas of code that may need additional testing.

4. Add Widgets to Dashboards (Optional):

You can also add code coverage widgets to your Azure DevOps dashboards to have quick access to code coverage metrics and trends.

By following these steps, you can publish code coverage results in Azure DevOps and use them to monitor the health of your codebase and make informed decisions about improving test coverage. The specific tasks and configurations may vary based on your technology stack, so consult the documentation for your testing framework and Azure DevOps for detailed guidance.