SpringBootTest does not work with Java 10/modules [SPR-16976]

[spring-projects-issues]

Keir Lawson opened SPR-16976 and commented

I attempted to port the Spring web testing example at https://github.com/spring-guides/gs-testing-web to Java 10 and modules, however I find when running my tests via Maven that the @SpringBootTest annotation is no longer able to locate my application class despite the code working previously before modularisation.I receive the following error when running mvn test

java.lang.IllegalStateException: Unable to find a @SpringBootConfiguration, you need to use @ContextConfiguration or @SpringBootTest(classes=...) with your test

Adding the application class explicitly as this message suggests then results in

java.lang.reflect.InaccessibleObjectException: Unable to make field private static java.lang.Object hello.Application$$EnhancerBySpringCGLIB$$d7dfca41.CGLIB$CALLBACK_FILTER accessible: module gs.testing.web does not "opens hello" to unnamed module @2fc6f97f

The changes I made to the initial repo can be viewed here: spring-guides/gs-testing-web@master...keirlawson:j10_modules

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No further details from SPR-16976

[spring-projects-issues]

Juergen Hoeller commented

Please report this to the Spring Boot issue tracker on GitHub first: https://github.com/spring-projects/spring-boot/issues

There might be a core framework issue hiding here (which this JIRA instance is for) in which case I'm happy to reopen this JIRA ticket after the Boot team had a first pass.

[spring-projects-issues]

Keir Lawson commented

Have opened spring-projects/spring-boot#13581 as requested.