Ah, simple solution to unittests inside templates

[H. S. Teoh via Digitalmars-d]

On Sat, Sep 17, 2016 at 01:22:52PM -0400, Andrei Alexandrescu via Digitalmars-d wrote:
> Recall the discussion a few days ago about unittests inside templates
> being instantiated with the template. Often that's desirable, but
> sometimes not - for example when you want to generate nice ddoc
> unittests and avoid bloating. For those cases, here's a simple
> solution that I don't think has been mentioned:

I've already mentioned this exact idea recently in the d-learn forum.
Nobody responded then.


> /** Awesome struct */
> struct Awesome(T)
> {
>     /** Awesome function. */
>     void awesome() {}
> 
>     ///
>     static if (is(T == int)) unittest
>     {
>         Awesome awesome;
>         awesome.awesome;
>     }
> }
> 
> The unittest documentation is nicely generated. The unittest code
> itself is only generated for one instantiation.
[...]

And you also have to make sure Awesome!int is actually instantiated,
otherwise the unittest won't actually run!


T

-- 
In theory, there is no difference between theory and practice.