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  • @Value in unit test

    Hi,

    it looks like I need help in using @Value annotation in Spring unit tests. My unit test extends AbstractJUnit4SpringContextTests and everything works fine including the @Autowired annotation.

    But if I tried to use the new Spring 3.0 feature to inject property from config file like this:

    Code:
    	@Value("${timeout}")
    	private String timeout;
    It throws the followig exception:

    Code:
    ERROR - Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@19e8f17] to prepare test instance [com.aspectworks.hammer.invoice.selenium.WorkflowTest@c44b88]
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.aspectworks.hammer.invoice.selenium.WorkflowTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.aspectworks.hammer.invoice.selenium.WorkflowTest.setTimeout(java.lang.String); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'com.aspectworks.hammer.invoice.selenium.WorkflowTest' is defined
    	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:286)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1055)
    	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:333)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:220)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:301)
    	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:303)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)
    	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
    	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
    	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
    Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.aspectworks.hammer.invoice.selenium.WorkflowTest.setTimeout(java.lang.String); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'com.aspectworks.hammer.invoice.selenium.WorkflowTest' is defined
    	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:608)
    	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
    	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:283)
    	... 26 more
    Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'com.aspectworks.hammer.invoice.selenium.WorkflowTest' is defined
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:509)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1041)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:827)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:696)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:685)
    	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:559)
    	... 28 more

  • #2
    Hello,

    We experience exactly the same error.

    @Value(${property} works within the webapplication but not within JUnit Tests.

    Is there someone else who experience this ? Should i fill a jira issue ?

    Edit : I checked Jira and found this issue : http://jira.springframework.org/browse/SPR-6611.

    I upgraded to 3.0.1 but it doesn't help.
    Last edited by headphones; Mar 1st, 2010, 08:40 AM.

    Comment


    • #3
      @Value will only work for beans defined in the applicationcontext as those values are replaced/detected with a BeanFactoryPostProcessor. So using @Value in a Test class isn't going to be possible.

      Comment


      • #4
        http://jira.springframework.org/browse/SPR-6918

        Comment


        • #5
          I think this feature should be available in unit tests because it helps to simplify test development and because we should reduce "magic" in Spring behavior. Developers simply expect @Value to work.

          Comment


          • #6
            Well I'm a developer and I didn't expect it to work, however that probably is due to the fact that I know the underlying mechanism. The @Value works only for beans defined in the app context as those are injected/replaced by modifying the BeanDefinition for a TestCase there is no bean definition (hence the exception NoSuchBeanDefinitionException).

            It works in the same way the PropertyPlaceHolderConfigurer works and that doesn't work for a testcase either.

            Comment


            • #7
              Actually you can solve this in two ways:
              1. Make private field protected and place the test within the same package, this way you can access the field in your test (Not nice)
              2. Use reflection:
              http://tutorials.jenkov.com/java-ref...d-methods.html

              Comment

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