The session object is a simple Map, so creating it is easy.
First, you have to define an instance variable in which to store the
session, and second, you need to implement the setSession() method.
public class MyAction implements SessionAware {
private Map session;
public void setSession(Map session) {
this.session = session;
}
}
If most/all of your actions need access to the session, you may want
to define a BaseAction that implements SessionAware, and add a
protected method, getSession(). Or, you could make the session
variable protected (instead of private), but I prefer getSession().
In your unit test:
Map session = new HashMap();
session.put("key", value);
action.setSession(session);
String result = action.execute();
assertEquals(SUCCESS, result);
What the map contains are the keys and values your action expects.
These are the same things you'd pass to HttpSession.setAttribute
(String name, Object value). So, say you want to store a shopping
cart object in the session, you'd do:
session.put("shoppingCart", shoppingCart);
action.setSession(session);
On Sep 13, 2007, at 7:04 PM, Session A Mwamufiya wrote:
Thanks for the tip, but I'll need an actual code snippet, because
when I make my action implement SessionAware, I need to also
implement the setSession() method, and I'm back to square 1, trying
to figure out how to create a session object. I can send a HashMap
to the method, but what does it have to contain? What is the
actual setting that needs to go in it, since I need to implement it?
If your Action implements SessionAware, you don't need to make a mock
HttpSession at all. You just make a new HashMap, stuff it with the
values
you want, and call action.setSession(). Just one more of the
things I love
about Struts 2. :)
But there are libraries around that do allow mock HttpSessions.
Spring was
mentioned; MockObjects and Mockrunner each have it, and a quick
google
search for "MockHttpSession" reveals plenty of others. Still, I'd
recommend the SessionAware.
http://struts.apache.org/2.0.6/struts2-core/apidocs/org/apache/
struts2/interceptor/SessionAware.html "Note that using this interface
makes the Action tied to a servlet environment, so it should be
avoided if
possible since things like unit testing will become more difficult."
In my experience, however, that's not the case at all. Using
SessionAware,
from a unit testing perspective, makes your Action less dependent
on the
servlet API, and makes unit testing easier.
On Sep 13, 2007, at 3:47 PM, Session A Mwamufiya wrote:
Hi,
How do I go about creating a dummy HttpSession object for unit
testing a
struts 2 app?
I have created a dummy HttpServletRequest object, but I can't
instanciate an HttpSession in teh Request.getSession() method,
because
HttpSession is an abstract interface and I can't create an
instance of
it.
Any ideas?
Thanks
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