Fix Boost test macro definitions

[chrchr-github]

CI failure is unrelated.

[chrchr-github]

@ChristophStrehle Please review

[ChristophStrehle]

@chrchr-github Thanks a lot for working on this fix — really appreciate it!

The changes look good to me overall. I gave it a try with the 2.20.0 release on our code base, and I noticed a few false positives with BOOST_FIXTURE_TEST_CASE. For example:

// failed to expand 'BOOST_FIXTURE_TEST_CASE', Wrong number of parameters for macro 'BOOST_FIXTURE_TEST_CASE'.
BOOST_FIXTURE_TEST_CASE(TestCase, Fixture, boost::unit_test::depends_on(TestCase1))
{

I just wanted to flag that in case it’s helpful.

[chrchr-github]

Thanks for the review, BOOST_FIXTURE_TEST_CASE is now also variadic.