Support @BeforeTransaction and @AfterTransaction on interface default methods [SPR-14183]

[spring-projects-issues]

Sam Brannen opened SPR-14183 and commented

Status Quo

Java 8 introduced support for interface default methods. JUnit 5 as well as some existing Runner implementations for JUnit 4.x already support default methods in various scenarios -- for example, @Test, @BeforeEach, etc. However, the Spring TestContext Framework does not yet support the declaration of @BeforeTransaction and @AfterTransaction on default methods: it simply does not find them.

Deliverables

1. Update the annotated method search algorithms in TransactionalTestExecutionListener so that @BeforeTransaction and @AfterTransaction can be declared on interface default methods.

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Issue Links:

• Make ReflectionUtils.doWithMethods work on Java 8 default interface methods [SPR-12822] #17419 Make ReflectionUtils.doWithMethods work on Java 8 default interface methods
• Support test annotations on interfaces [SPR-14184] #18755 Support test annotations on interfaces

Referenced from: commits ff38224, 0f6711f

[spring-projects-issues]

Sam Brannen commented

Completed in GitHub commit 0f6711f:

Support @[Before|After]Transaction on default methods

Prior to this commit, @BeforeTransaction and @AfterTransaction could
only be declared on methods within test classes. However, JUnit 5 as
well as some existing third-party Runner implementations for JUnit 4
already support Java 8 based interface default methods in various
scenarios -- for example, @Test, @BeforeEach, etc.

This commit brings the Spring TestContext Framework up to date by
supporting the declaration of @BeforeTransaction and @AfterTransaction
on interface default methods.