Ah, simple solution to unittests inside templates

[Andrei Alexandrescu via Digitalmars-d]

On 9/18/16 6:23 AM, Nick Treleaven wrote:
> Besides the other comments, we still have to instantiate Awesome!int
> somewhere for the tests to run, which could be forgotten or improperly
> done, failing silently. (Also int is arbitrary, unhelpful for the
> uninitiated).

I don't see that as much of a hurdle seeing as any template written has 
a few "obvious" types it'll work with. To encapsulate that if needed:

struct Awesome(A, B, C)
{
     private enum ut = is(A == int) && is(B == int) && is(C == int);
     unittest { alias Awe = Awesome!(int, int, int); }

     static if (ut) unittest
     {
         ...
     }
}

Andrei