Shared static this() not executed for unittest

[Steven Schveighoffer]

On 12/15/18 5:14 PM, Jonathan M Davis wrote:
> On Saturday, December 15, 2018 10:27:36 AM MST Neia Neutuladh via
> Digitalmars-d-learn wrote:
>> On Sat, 15 Dec 2018 17:19:05 +0000, Timoses wrote:
>>> Running `dub test` will output:
>>> Running ./unit-test-library writeln: unittest All unit tests have been
>>> run successfully.
>>>
>>> Why is the `shared static this()` not executed?
>>
>> Run `dub clean; dub test -v` and you'll see that main.d isn't compiled
>> into the test library.
>>
>> dub test substitutes its own main() function over yours. In order to do
>> this, it needs to not compile in your main() and to compile in its own.
>> dmd doesn't have an option to replace main(), so dub drops that entire
>> source file.
> 
> Yeah. I hate how dub does this. I've been bitten by it on multiple
> occasions, and it's really easy to miss that this is happening. It probably
> would have been better if it required you to deal with main when the target
> type is an executable, resulting in a linker error when you didn't provide
> one. Instead, a number of us do stuff like

This should be fixed, as DMD now supports just running the program with 
--DRT-testmode=test-only and it will only run unit tests.

-Steve