quarkusio/quarkus

Use parametrised tests for Hibernate ORM/Reactive interoperability

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#51207 opened on Nov 24, 2025

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area/hibernate-ormarea/hibernate-reactivegood first issuekind/enhancement

Description

Description

The discussion in https://github.com/quarkusio/quarkus/pull/51159 highlighted that users combine Hibernate ORM and Hibernate Reactive in different ways. For example, users may:

  • Use both blocking and reactive access within the same persistence unit
  • Use separate persistence units for blocking and reactive
  • Rely on default persistence units only, or mixed with named
  • Encounter negative scenarios, such as misspelled datasource or PU names

The current compatibility test suite (io.quarkus.hibernate.reactive.compatibility) encodes these scenarios in a denormalized way, which makes it difficult to understand the complete coverage and has confusing test names such as ORMReactiveCompatbilityDifferentNamedDataSourceNamedPersistenceUnitBothUnitTest. As a result, certain edge cases may already be untested.

Refactoring the suite to use parameterized tests would make the matrix of supported combinations explicit and easier to reason about.

To be done after https://github.com/quarkusio/quarkus/issues/51206

Implementation ideas

No response

Contributor guide

Tech stack
java
Domain
backendtesting
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Understanding of Hibernate ORM and ReactiveFamiliarity with Quarkus testing framework
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Examine the existing test suite in `io.quarkus.hibernate.reactive.compatibility` package. Understand the current denormalized structure and identify all parameter combinations (persistence units, data sources, blocking vs reactive). Look at the linked PR #51159 for context on user scenarios. Then refactor to use JUnit parameterized tests, ensuring all scenarios from the discussion are covered.