[MO-java-users] Why does MockHttpSession.getAttribute allow only one access?

[Jeff D. <Jef...@no...>]

I'm testing out my project I found that I getting an exception on the
following code that I think perfectly fine. The implementation of
MockHttpSession only allows you to access an attribute once in the
session. If you have the following code, an exception will thrown.

if (_session.getAttribute("myAttribute") != null) {
        myAttribute = (String) _session.getAttribute("myAttribute");
} else {
    throw new missingImportantDataExecption();
}

In my test, I have

setupGetAttribute(myAttribute, "really important info");

The problem just by reading the _session.getAttribute("myAttribute") in
the test condition will eliminate the value and cause an exception at
myAttribute = (String) _ session.getAttribute("myAttribute");

I expect that what your intention is that I should have

setupGetAttribute(myAttribute, "really important info");
setupGetAttribute(myAttribute, "really important info");

to show that I plan to access the attribute twice. I doubt that many
users will anticipate this. It is just not how Servlet API works, so I
think most developer will be surprised by this..

I look forward to your comments.

Regards,

Jeff Duska