d0cba8c138
Add a compile time check to ensure that the parameters to TEST_P and INSTANTIATE_TEST_SUITE_P are not empty. Some compilers already fail in that case and, even where it works, it's likely to result in technically invalid code by virtue of creating reserved identifiers: https://en.cppreference.com/w/cpp/language/identifiers PiperOrigin-RevId: 273832263