message: Adding ifdef to skip operator tests if MFEM_USE_EXCEPTIONS is not defined.
diff: #include "mfem.hpp"
  #include "catch.hpp"
  +#ifdef MFEM_USE_EXCEPTIONS
  +
  using namespace mfem;
  TEST_CASE("Operator", "[Operator]")
  @@ -46,3 +48,5 @@ TEST_CASE("Operator", "[Operator]")
  REQUIRE_NOTHROW(rap = new RAPOperator(A, cg, cg));
  }
  }
  +
  +#endif // MFEM_USE_EXCEPTIONS
  