meson unittest

[sfp]

On Tuesday, 7 January 2025 at 11:46:46 UTC, axricard wrote:
> [...[
>
> What do you mean by 'not particularly useful' ? Unittests are 
> not being runned ?
>
> [...]

I dug into this a bit more and figured out what the problem was.

File `blah.d`:
```
void f() {
   import std.stdio;
   writeln("hi");
}

unittest {
   writeln("bye");
}
```

File `main.d`:
```
import blah;

void main() {
   f();
}
```

File `meson.build`:
```
project('unittest', 'd')

mainlib = library('mainlib', ['blah.d'])

executable('maintest', ['main.d'], link_with: [mainlib], 
d_unittest: true)
```

Run:
```
$ meson setup builddir
$ cd builddir
$ meson compile
$ ./maintest
```

Outputs "hi" only.

Change `meson.build` to:
```
project('unittest', 'd')

mainlib = library('mainlib', ['blah.d'], d_unittest: true)

executable('maintest', ['main.d'], link_with: [mainlib])
```

Tests run, but `maintest` does not. You can add `d_unittest: 
true` to the `executable` invocation or not---doesn't make a 
difference.

Pretty unclear from the Meson docs what the expected behavior 
should be.