spring-boot: @MockBean combined with @Repeat results in "the field cannot have an existing value" error

I need to run Spring Test concurrently. For this reason, a separate method rule has been created. The logic of this rule (code included in reproducer) is to execute the test method multiple times in a dedicated executor.

Unfortunately injection flow does not work as excepted and throws the following exception:

org.springframework.beans.factory.BeanCreationException: Could not inject field: <xxx>; 
    nested exception is java.lang.IllegalStateException: The field <xxx> cannot have an existing value
	at org.springframework.boot.test.mock.mockito.MockitoPostProcessor.inject(MockitoPostProcessor.java:364)

Reproducer and instruction are here: https://github.com/alexey-anufriev/spring-test-concurrent-execution-problem

About this issue

Original URL
State: closed
Created 3 years ago
Comments: 19 (14 by maintainers)

Commits related to this issue

Allow @MockBean to be used with Framework's @Repeat Fixes gh-27693 — committed to spring-projects/spring-boot by wilkinsona 3 years ago

Most upvoted comments

I have just checked the fix and it looks promising even for my case, but anyway, I agree, JUnit 5 is the best way to go. Thank you for your support.

alexey-anufriev on Aug 23, 2021

With that changes in https://github.com/spring-projects/spring-boot/commit/f8ef90813f839f34787f362f2712411f5d9d9359, repetition via @Repeat will now work. On the Spring Boot side, we have no plans to make any further changes to support concurrent execution. My opinion is that you should migrate to JUnit 5 for that.

wilkinsona on Aug 23, 2021

@sbrannen, thank you for this suggestion, yes, this has some limitations but still works well enough for me.

alexey-anufriev on Aug 23, 2021

Those two feel contradictory to me and I think it would be good to try and clarify the javadoc.

I opened https://github.com/spring-projects/spring-framework/issues/27305 to track that.

sbrannen on Aug 20, 2021

I also pushed one commit to reproduce the problem: https://github.com/alexey-anufriev/spring-test-concurrent-execution-problem/commit/7be5f8e355d6232a04c532e2a27729af917b552b

alexey-anufriev on Aug 17, 2021

@alexey-anufriev I’d prefer to keep backtick markup out of the issue titles since it doesn’t render so well on the release notes

philwebb on Aug 17, 2021

For reference, this was originally discussed on Gitter.

wilkinsona on Aug 16, 2021