ActionContext.getContext().getParameters() returns null during StrutsJUnit4TestCase - maven

Question

I am running a JUnit test via maven where a struts action java method is being tested that makes the following call:
// Gets this from the "org.apache.struts2.util.TokenHelper" class in the struts2-core jar
String token = TokenHelper.getTokenName();
Here is the method in "TokenHelper.java":
/**
* Gets the token name from the Parameters in the ServletActionContext
*
* #return the token name found in the params, or null if it could not be found
*/
public static String getTokenName() {
Map params = ActionContext.getContext().getParameters();
if (!params.containsKey(TOKEN_NAME_FIELD)) {
LOG.warn("Could not find token name in params.");
return null;
}
String[] tokenNames = (String[]) params.get(TOKEN_NAME_FIELD);
String tokenName;
if ((tokenNames == null) || (tokenNames.length < 1)) {
LOG.warn("Got a null or empty token name.");
return null;
}
tokenName = tokenNames[0];
return tokenName;
}
The 1st line in this method is returning null:
Map params = ActionContext.getContext().getParameters();
The next LOC down, "params.containKey(...)" throws a NullPointerException because "params" is null.
When this action is called normally, this runs fine. However, during the JUnit test, this Null Pointer occurs.
My test class looks like this:
#Anonymous
public class MNManageLocationActionTest extends StrutsJUnit4TestCase {
private static MNManageLocationAction action;
#BeforeClass
public static void init() {
action = new MNManageLocationAction();
}
#Test
public void testGetActionMapping() {
ActionMapping mapping = getActionMapping("/companylocation/FetchCountyListByZip.action");
assertNotNull(mapping);
}
#Test
public void testLoadStateList() throws JSONException {
request.setParameter("Ryan", "Ryan");
String result = action.loadStateList();
assertEquals("Verify that the loadStateList() function completes without Exceptions.",
result, "success");
}
}
The ActionContext.getContext() is at least no longer null after I switched to using StrutsJUnit4TestCase.
Any idea why .getParameters() is returning null?

Answer 1

You need to initialize parameters map by yourself inside your test method. Additionally if you want to get token name you need to put it in parameters map.
Map<String, Object> params = new HashMap<String, Object>();
params.put(TokenHelper.TOKEN_NAME_FIELD,
new String[] { TokenHelper.DEFAULT_TOKEN_NAME });
ActionContext.getContext().setParameters(params);