Subject: RE: Testing a blocking method - msg#00169

Hi Herbert!

Just a rough idea: call

reply = bus.request(-10);

in a separate thread. Control the thread within your Unit test.
If the thread doesn't complete within a timeout intervall, kill it
and throw an exception.

Mit freundlichem Gruße

Dr. Oliver Strebel

CC RCO Treasury Control
Tiger Project

The opinions herein are my own and do not necessarily reflect those of
Dresdner Bank AG.

-----Original Message-----
From: herbert.helmstreit@xxxxxxxxxxxxxx
[mailto:herbert.helmstreit@xxxxxxxxxxxxxx]
Sent: Mittwoch, 20. November 2002 17:28
To: junit@xxxxxxxxxxxxxxx
Subject: [junit] Testing a blocking method


Hello everybody

We have a method called String request(long timeout)
This method returns after timeout milliseconds with null result (bad case)
or after short time with a result. (good case)

We found that negative values for timeout are another reason for a failure.
They are treated like maxlong - abs(timeout), causing the method to block.
In this case an Exception should be thrown.
How can I produce a failure with jUnit, if the Exception is not thrown?
I tried it like this:

...
try
{
System.out.println("*** Request w. -10 ");
reply = bus.request(-10);
fail("negative timeout was used.");
}
catch (Exception expect)
{
System.out.println("Detected bad argument "+expect);
}
assertNull(reply);
...

JUnit hangs in the request method with a green bar until the year 2500 or
so.
How can I bring it to fail?

Thank you for any tips!

Herbert

===========================================
Dipl.-Phys. Herbert Helmstreit
Systema GmbH
Schikanederstr. 2b - Posthof
D - 93053 Regensburg
Tel.: ++941/78 39 2-36
Fax.: ++941/78 39 2-72
e-mail: herbert.helmstreit@xxxxxxxxxxxxxx
http://www.systemagmbh.de
===========================================






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