cje-prep/05-test-execution-and-reporting.md

# Key CI/CD/Jenkins Concepts and their Usage

## Displaying JUnit and JaCoCo Test Results

1. Configure the `gradle-initializr` project to parse the JUnit XML results for unit test. The files can be found in the directory `build/test-results/test`.
2. Execute the build twice to generate a graph. Have a look at the executed tests in the test results.
3. Include all test results (unit and integration tests) in the reporting.
4. Have a look at how the test result trend changes.
5. Install the JaCoCo plugin.
6. Reconfigure the Gradle build step to also generate JaCoCo reports: `clean build jacocoTestReport jacocoIntegrationTestReport`.
7. Add a post-build action for publish the JaCoCo reports. Use the following path to look for results: `build/jacoco/**.exec`.
8. Execute the build twice to generate a graph. Have a look at the code coverage results.

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Publish the JUnit reports by pointing to the exact directory containing the XML files.

![Publish JUnit Results](./images/05-test-execution-and-reporting/publish-unit-tests.png)

After executing the build twice you will see a test result trend graph.

![JUnit Test Trend](./images/05-test-execution-and-reporting/unit-test-result-trend.png)

Publish the JUnit reporting by using a wild card.

![Publish All JUnit Results](./images/05-test-execution-and-reporting/publish-all-tests.png)

The trend changes accordingly.

![Changed Test Result Trend](./images/05-test-execution-and-reporting/all-test-result-trend.png)

Install the JaCoCo plugin.

![JaCoCo Plugin](./images/05-test-execution-and-reporting/jacoco-plugin.png)

Change the task list executed by the Gradle build step.

![JaCoCo Tasks](./images/05-test-execution-and-reporting/jacoco-tasks.png)

Configure JaCoCo reporting.

![JaCoCo Configuration](./images/05-test-execution-and-reporting/jacoco-config.png)

The JaCoCo coverage trend renders after executing the build twice.

![JaCoCo Coverage Report Trend](./images/05-test-execution-and-reporting/jacoco-trend.png)

You can drill into the details of the report.

![JaCoCo Coverage Report Trend](./images/05-test-execution-and-reporting/jacoco-report.png)

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