JUnit Testing : NullPointerException
Hello everyone. I'm quite new to JSF taglib development. I've developed a custom JSF taglib, which either disables of hides(rendered=false) if unauthorized user logs in. Thankfully, the taglib functions correctly and performs well.
After developing, I started building Unit Testing codes with jUnit and Mockito. I haven't had much luck with that as I started facing an issue with the following method.
public void setSecurityInterceptor(FacesContext context) {
ApplicationContext appContext = (ApplicationContext)FacesContextUtils.getWebApplicationContext(FacesContext.getCurrentInstance());
SecurityInterceptor securityInterceptor =
(SecurityInterceptor)appContext.getBean( SECURITY_INTERCEPTOR );
this.securityInterceptor = securityInterceptor;
}
When FacesContextUtils's getWebApplicationContext(FacesContext) method flagged when it executes this line:
Object attr = fc.getExternalContext().getApplicationMap().get(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE); (Line 51 of FacesContextUtil.java source)
Following is the source code for getCurrentInstance() method from http://grepcode.com/file/repository.jboss.com/maven2/javax.faces/jsf-api/1.2_13/javax/faces/context/FacesContext.java
In the unit testing class, I tried creating a mocked applicationContext and then verify whether the process occurs by executing setSecurityInterceptor method. Following error occurs:
java.lang.NullPointerException
at org.springframework.web.jsf.FacesContextUtils.getWebApplicationContext(FacesContextUtils.java:51)
So far I've tried using different ways of mocking the FacesContext object, and using MockFacesContext class from org.jboss.seam.mock as well as using Shale Mock. I haven't been too lucky with google as above approaches were all I've found so far from googling.
I've also tried creating a mock ThreadLocal and inserting/creating FacesContext instance but wasn't successful since that's not the actual Thread I'm running my mocked objects on. Maybe my approach should be different. There must be a way to test my Renderer.
Do you happen to have any idea / suggestion on how to successfully complete unit testing for this method?
