Spring jUnit Testing properties file

Question

I have a jUnit Test that has its own properties file application-test properties  and its spring config file application-core-test xml     One of the method uses an object instantiated by spring config and that is a spring component  One of the members in the classes derives its value from application properties which is our main properties file  While accessing this value through jUnit it is always null  I even tried changing the properties file to point to the actual properties file  but that doesnt seem to work    Here is how I am accessing the properties file object   Component  PropertySource  classpath application properties   public abstract class A         Value    test value        public String value       public A            SpringBeanAutowiringSupport processInjectionBasedOnCurrentContext this              public A String text            this               do something with text and value   here is where I run into NPE           public class B extends A           addtnl code      private B                  private B String text             super text            RunWith SpringJUnit4ClassRunner class   ContextConfiguration locations   classpath META-INF spring application-core-test xml                                 classpath META-INF spring application-schedule-test xml     PropertySource  classpath application-test properties   public class TestD         Value    value works        public String valueWorks        Test     public void testBlah                  SpringBeanAutowiringSupport processInjectionBasedOnCurrentContext this           B b  new B  blah                 addtnl code

User · Answer

I faced the same issue  spent too much calories searching for the right fix until I decided to settle down with file reading  Properties configProps   new Properties    InputStream iStream   new ClassPathResource  quot myapp-test properties quot   getInputStream    InputStream iStream   getConfigFile    configProps load iStream

User · Answer

As for the testing  you should use from Spring 4 1 which will overwrite the properties defined in other places    TestPropertySource  classpath application-test properties     Test property sources have higher precedence than those loaded from the operating system s environment or Java system properties as well as property sources added by the application like  PropertySource

User · Answer

Firstly  application properties in the  PropertySource should read application-test properties if that s what the file is named  matching these things up matters     PropertySource  classpath application-test properties      That file should be under your  src test resources classpath  at the root    I don t understand why you d specify a dependency hard coded to a file called application-test properties  Is that component only to be used in the test environment   The normal thing to do is to have property files with the same name on different classpaths  You load one or the other depending on whether you are running your tests or not   In a typically laid out application  you d have   src test resources application properties   and   src main resources application properties   And then inject it like this    PropertySource  classpath application properties     The even better thing to do would be to expose that property file as a bean in your spring context and then inject that bean into any component that needs it  This way your code is not littered with references to application properties and you can use anything you want as a source of properties  Here s an example  how to read properties file in spring project

[java] Spring jUnit Testing properties file

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