It is not possible to universally determine textual order of attributes
based on the metadata alone. Since NUnit tests are driven by the
metadata, and not the source code, there is no way to accomplish what
you want. (Note: it could be done in a framework-dependent, version-
dependent manner, but not across all frameworks and versions)
Further, NUnit expects and allows only _one_ ExpectedExceptionAttribute
on a method. The approach of deriving a new attribute from
ExpectedException does not cause the new attribute to recognized by
NUnit at all.
Charlie
PS: Sorry for the delay, this was inadvertently marked Incomplete some
time ago and I only now re-examined it.
** Changed in: nunitv2
Status: Incomplete => Won't Fix
--
ExpectedException specification
https://bugs.launchpad.net/bugs/532536
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Status in NUnit V2 Test Framework: Won't Fix
Bug description:
I subclassed ExpectedException attribute passing to super constructor
AssertionException type.
Now if I attibute my test method with both my subclass and
ExpectedException(AssertionException) I get runner and attribute order
dependent behaviour:
- R# runner interpretes all attributes in sequence so a test method body that
passes is toggled to failure by the first ExpectedException attribute then the
failure is toggled back to pass by the next ExpectedException attribute.
- Nunit 2.5.3 gui-runner seems to interpret just the first one
for:
<Test()> <ObservedBehaviour("Code generator produces duplicates.")>
<ExpectedException(GetType(AssertionException))> _
Public Sub ObservedBehaviourAfterChangeTest()
yielding:
Observed behaviour has been changed. Please balance the value of the
change with compatibility breach costs.
Originally observed behaviour: Code generator produces duplicates.
NUnit.Framework.AssertionException was expected
while for
<Test()> <ExpectedException(GetType(AssertionException))>
<ObservedBehaviour("Code generator produces duplicates.")> _
Public Sub ObservedBehaviourAfterChangeTest()
returning:
NUnit.Framework.AssertionException was expected
The documentation deserves a clarification.
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