NPE involving o.j.s.mock.AbstractSeamTest.Request.init() and
o.j.s.ui.facelet.RendererRequest.cleanup()
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Key: JBSEAM-4728
URL: https://jira.jboss.org/browse/JBSEAM-4728
Project: Seam
Issue Type: Bug
Components: Mail, Test Harness
Affects Versions: 2.2.0.GA
Environment: java version "1.6.0_22"
Seam 2.2.0.GA
Reporter: Flavio Costa
Assignee: Pete Muir
I'm trying to come up with a solution to integrate Wiser
(http://code.google.com/p/subethasmtp/wiki/Wiser) and Seam Mail (so that I can
create tests asserting that the e-mail is actually sent) but I stumbled into a
problem.
Seam Mail uses the "o.j.s.ui.facelet.RendererRequest" which sets up some mock
objects to be able to render a XHTML in a String and send the e-mail.
This works fine in production, I can call it several times during a single
request. It works like a charm.
The problems happens when trying to test the given method using SeamTest and
its infrastructure.
What happens is, during o.j.s.mock.AbstractSeamTest.Request.init() it creates a
new MockFacesContext and saves it so that whenever you call
FacesContext.getInstance() or MockFacesContextFactory.getFacesContext() this
same instance will be returned.
That's ok... for now.
Things get messier now.
Below code is extracted from RendererRequest.init()
.....
originalFacesContext = FacesContext.getCurrentInstance();
facesContext =
RendererFacesContextFactory.instance().getFacesContext(request, response);
....
Problem here is that, due to AbstractSeamTest.Request.init()
'originalFacesContext == facesContext' and when RendererRequest.cleanup() is
eventually called 'facesContext.release()' what happens is:
(Extracted from MockFacesContext.release())
setCurrentInstance(null);
MockFacesContextFactory.setFacesContext(null);
The next time someone calls MockFacesContext.getInstance() or
MockFacesContextFactory.getFacesContext() they will return null and eventually
this will result in a NPE.
Which is exactly what happens with me due to the fact that I call
"Renderer.instance().render("mail.xhtml")" multiple times inside a method.
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