Strangeness while running tests and using Provider.

[gerasalus]

Hi all,

i am running into the strange error, when running jUnit tests with Provider<>. Only first tests succeeds, after second one i get an exception about not being able to autowire fields.

Base test class:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "/spring/hibernate.xml", "/spring/testDataSource.xml" })
@TransactionConfiguration(transactionManager = "txManager", defaultRollback = true)
public abstract class BaseModelTest {

}

Test class:

@Component
public class AttachmentTest extends BaseModelTest {

    @Inject
    private Provider<AttachmentBuilder> attachmentBuilderProvider;

    @Test
    @Transactional
    public void testOne() {
        attachmentBuilderProvider.get();
    }

    @Test
    @Transactional
    public void testTwo() {
        attachmentBuilderProvider.get();
    }
}

AttachmentBuilder class:

@Transactional
@Component
@Scope("prototype")
public class AttachmentBuilder {

}

When i run junit tests, it always fails on second test (testTwo()) if i run them separately - everything is ok. Any ideas on this?

<....>
Jun 27, 2012 11:22:26 AM org.springframework.test.context.transaction.TransactionalTestExecutionListener startNewTransaction
INFO: Began transaction (1): transaction manager [org.springframework.orm.hibernate4.HibernateTransactionManager@7be758ca]; rollback [true]
Jun 27, 2012 11:22:26 AM org.springframework.test.context.transaction.TransactionalTestExecutionListener endTransaction
INFO: Rolled back transaction after test execution for test context [[TestContext@68f51766 testClass = AttachmentTest, testInstance = my.namespace.model.test.AttachmentTest@32d35f5f, testMethod = testOne@AttachmentTest, testException = [null], mergedContextConfiguration = [MergedContextConfiguration@531a700a testClass = AttachmentTest, locations = '{classpath:/spring/hibernate.xml, classpath:/spring/testDataSource.xml}', classes = '{}', activeProfiles = '{}', contextLoader = 'org.springframework.test.context.support.DelegatingSmartContextLoader']]]
Jun 27, 2012 11:22:26 AM org.springframework.test.context.TestContextManager prepareTestInstance
SEVERE: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@2f87fafc] to prepare test instance [my.namespace.model.test.AttachmentTest@86ecec5]
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'my.namespace.model.test.AttachmentTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.inject.Provider my.namespace.model.test.AttachmentTest.attachmentBuilderProvider; nested exception is java.lang.IllegalArgumentException: Can not set javax.inject.Provider field my.namespace.model.test.AttachmentTest.attachmentBuilderProvider to my.namespace.model.builder.AttachmentBuilder
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:374)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:110)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
	at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:321)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:290)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.inject.Provider my.namespace.model.test.AttachmentTest.attachmentBuilderProvider; nested exception is java.lang.IllegalArgumentException: Can not set javax.inject.Provider field my.namespace.model.test.AttachmentTest.attachmentBuilderProvider to my.namespace.model.builder.AttachmentBuilder
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
	... 26 more
Caused by: java.lang.IllegalArgumentException: Can not set javax.inject.Provider field my.namespace.model.test.AttachmentTest.attachmentBuilderProvider to my.namespace.model.builder.AttachmentBuilder
	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164)
	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168)
	at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
	at java.lang.reflect.Field.set(Field.java:675)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:502)
	... 28 more

[Marten Deinum]

Why is your testcase an @Component, that shouldn't be?!

You might want to crank up the logging to debug to get some more information.

[cwatts]

yeh just came across the same thing upgrading from 3.1.0 to 3.1.1
apparently it's a bug fixed in 3.1.3
https://jira.springsource.org/browse/SPR-9630