runtest for MesonNinja

[sassy-crick]

In issue #3771 we fixed the test-step so runtest automatically calls ninja as the DEFAULT_TEST_CMD in test_cmd. I am wondering if we want to do a similar thing for MesonNinja to avoid something like that:

runtest = 'ninja test'

Or is there something I am missing out on?

[Thyre]

Absolutely makes sense to do that. I think test is the most common command used for something like this.
For make, people sometimes like to choose different names, e.g. check (Score-P), check-[...] (LLVM).