Python in a Nutshell

Name

assertRaises, failUnlessRaises

Synopsis

                           t.assertRaises(exceptionSpec,callable,*args)

Calls callable (* args ). Fails if the call doesn’t raise any exception. If the call raises an exception not meeting exceptionSpec, assertRaises propagates the exception. If the call raises an exception meeting exceptionSpec, assertRaises does nothing. exceptionSpec can be an exception class or a tuple of classes, just like the first argument to the except clause of a try/except statement. failUnlessRaises is a synonym.