@Scheduled method in test class not supported anymore

[romainmoreau]

Affects: 6.1.9+

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Since Spring 6.1.9 (and I believe since #33009), it's not possible to declare a @Scheduled method directly in a test class because the following exception is thrown when the test is run:

org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'com.example.demo.DemoApplicationTestsWithoutBoot.ORIGINAL' available
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:923)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1361)
        at org.springframework.beans.factory.support.AbstractBeanFactory.isSingleton(AbstractBeanFactory.java:459)
        at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.postProcessAfterInitialization(ScheduledAnnotationBeanPostProcessor.java:311)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:439)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1805)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:413)
        at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:144)
        at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:98)
        at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:260)
        at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:160)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:212)
        at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:194)
        at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1709)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:556)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:546)
        at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310)
        at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)
        at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734)
        at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:782)
        at java.base/java.util.Optional.orElseGet(Optional.java:364)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)

It's not blocking because as a workaround one can refactore the test by moving the @Scheduled method into a new @Component for example but it's still a regression.

Demo: https://github.com/romainmoreau/scheduled-in-test-regression