message: Pretteir INFO(...) output in DDI unit test
diff: @@ -140,12 +140,15 @@ TEST_CASE( "Dipole-Dipole Interaction", "[physics]" )
  for(int i=0; i<state->nos; i++)
  {
  + INFO("Failed DDI-Gradient comparison at i = " << i);
  + INFO("Graddient (FFT):")
  INFO(grad_fft[i])
  + INFO("Gradient (Direct):")
  INFO(grad_direct[i])
  REQUIRE(grad_fft[i].isApprox(grad_direct[i]));
  }
  -
  - INFO("##### energy_direct = " << energy_direct << "\n" );
  - INFO("##### energy_fft = " << energy_fft << "\n");
  + INFO("Failed energy comparison test!")
  + INFO("Energy (Direct) = " << energy_direct << "\n" );
  + INFO("Energy (FFT) = " << energy_fft << "\n");
  REQUIRE(Approx(energy_fft) == energy_direct);
  }
  