QUARKUS-1255.md

QUARKUS-1255 Dev support for JaCoCo extension

• JIRA link: https://issues.redhat.com/browse/QUARKUS-976
• Quarkus Guide: https://quarkus.io/guides/tests-with-coverage
• Release blog post: https://quarkus.io/blog/quarkus-1-13-0-final-released/#test-coverage-reports

Scope of the testing

• Focus on exploratory testing of the feature.
• Extension has no impact on performance in production.
• Small impact on test execution time as JaCoCo instruments classes to capture the coverage. On the other hand the same impact would be noted when JaCoCo is used directly, quarkus-jacoco extension makes user experience much nicer.
• No impact for compatibility, extension is not used in application code.

Getting familiar with the feature

• Focus on exploratory testing of the feature
• Experiment with the extension using single module maven project generated using code.quarkus
• Experiment with the extension using several modules in Quarkus integration tests
• Experiment with the extension using standalone Maven project with several modules
  • https://github.com/rsvoboda/multi-module-jacoco/tree/multiple-app-modules
• Experiment with the extension using standalone Maven project with several test modules
  • https://github.com/rsvoboda/multi-module-jacoco/commit/ff78b19e88abd94df438d0e3566d89c784aabc23
• Get aggregated report from all the modules available in Maven project
  • https://github.com/rsvoboda/multi-module-jacoco/commit/fb07ba5881d066d92ac1c94c2ea924020d4829e7

Automated test development

• New test to be added into Quarkus QE tests suite to cover scenario with quarkus-jacoco extension

Advanced topics for test development

The are no advanced topics to be checked as the extension is considered for Development support and its complexity is not high.