# Saturday, May 26, 2007

.Net 2.0 has been out for a while and it seems that 'generics' have not made it into unit test frameworks (that I know of). When I write unit tests for generics, I don't want to have to instantiate them!

For example, if I have an generic interface,

interface IFoo<T> {...}

then I'd really like to write this kind of test and let the test framework figure out an interresting instantiation (i.e. choice of T):

public void Test<T>(IFoo<T> foo) { ... }

In the example above, System.Object can be trivially used to instantiate IFoo<T>. Of course, things get more interresting when mixing type argument, method argument and constraints :)

interface IFoo<T>
    R Bar<R>(T t)
     where R : IEnumerable<T>

In Pex, we've started to look at this problem... stay tuned.

posted on Saturday, May 26, 2007 11:09:00 PM (Pacific Daylight Time, UTC-07:00)  #    Comments [3]
# Friday, May 25, 2007

MbUnit 2.4 is out, check it out at


If you are using MbUnit parameterized tests (i.e. RowTest, CombinatorialTest) then migrating to Pex should be a piece of cake :)

posted on Friday, May 25, 2007 8:25:02 AM (Pacific Daylight Time, UTC-07:00)  #    Comments [2]