message: fic DivDiv unit test
diff: @@ -5907,7 +5907,7 @@ TEST_CASE("3D Bilinear Div Div Integrators",
  }
  SECTION("Mapping RT to enriched RT")
  {
  - Vector tmp_rt(fespace_rt.GetNDofs());
  + Vector tmp_rt(enriched_fespace_rt.GetNDofs());
  SECTION("Without Coefficient")
  {
  @@ -5927,7 +5927,7 @@ TEST_CASE("3D Bilinear Div Div Integrators",
  }
  SECTION("With Scalar Coefficient")
  {
  - BilinearForm blf(&fespace_rt);
  + MixedBilinearForm blf(&fespace_rt, &enriched_fespace_rt);
  blf.AddDomainIntegrator(new DivDivIntegrator(q3_coef));
  blf.Assemble();
  blf.Finalize();
  