Java unit test can't access ResourceBundle

java unit-testing junit easymock resourcebundle
Andy A picture Andy A · May 30, 2012 · Viewed 10.1k times · Source

I am creating a Java unit test to test some code I recently changed. However, the method I am testing instantiates a class which uses ResourceBundle …

ResourceBundle.getBundle("businessVariables").getString("product.name"));

The resource file lives in the web package at Mycompany_web/src/main/webapp/WEB-INF/classes/businessVariables.properties

My test lives in my xml package at Mycompany_xml/src/test/java/uk/co/mycompany/xmlapi/RequestProcessorTestNew.java

During normal runtime the resource bundle is accessible, but not when my unit test is run. It throws this error …

Testcase: testCreateInitialStatusResponse(uk.co.mycompany.xmlapi.RequestProcessorTestNew):  Caused an ERROR
null
java.lang.reflect.InvocationTargetException
    at uk.co.mycompany.xmlapi.RequestProcessorTestNew.testCreateInitialStatusResponse(RequestProcessorTestNew.java:62)
Caused by: java.lang.ExceptionInInitializerError
    at uk.co.mycompany.xmlapi.RequestProcessorImpl.createInitialStatusResponse(RequestProcessorImpl.java:812)
Caused by: java.util.MissingResourceException: Can't find bundle for base name businessVariables, locale en_US

What should I do? Can I enable my test to see the resource bundle somehow? Can I create a mock resource file somewhere which somehow the code will be able to see?

Answer

Kalyan Sarkar picture Kalyan Sarkar · May 30, 2012

If you have build your project structure according to Maven archetype, your resource bundle should ideally be in Mycompany_xml/src/test/resources. Then you can run unit tests from project home i.e. Mycompany_xml directory using mvn test.

While packaging the war, copy the resource bundle from Mycompany_xml/src/test/resources to the war using maven-assembly-plugin.

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