Assert and the optional Message

[Jacob Carlborg]

On 2012-03-12 15:08, Steven Schveighoffer wrote:
> I contended that unit test asserts should result in a hook that by
> default kills the program, but could be hooked into a unit testing
> handler. But the consensus was just to switch back to the original
> behavior (all asserts kill the program). If you look through the phobos
> or druntime mailing list archives you might find the relevant
> conversations. It may even be so old that the archives don't have it (it
> was on a private mailing list on Andrei's server for a time).
>
> My thoughts on assert/unit test:
>
> 1. AssertError (and any other Error) should not be caught by normal user
> code. Ever. It should only be caught by the runtime. However, the
> handler in the runtime could provide a hook specific to the
> OS/application and whether it is running unit tests. Obviously the hook
> would have to be set up before main runs, so that is an issue, but you
> may just need to alter the runtime in that case.

I had a look through the source code of druntime and found 
"onAssertError". I don't know if it's used or not but sounds exactly 
like the function I need. But unfortunately the function to set the 
assert handler is deprecated.

http://dlang.org/phobos/core_exception.html#onAssertError
http://dlang.org/phobos/core_exception.html#setAssertHandler

-- 
/Jacob Carlborg