static char help[] = "Tests the creation of a PC context.\n\n";

#include <petscpc.h>

int main(int argc, char **args)
{
  PC       pc;
  PetscInt n = 5;
  Mat      mat;

  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &args, NULL, help));
  PetscCall(PCCreate(PETSC_COMM_WORLD, &pc));
  PetscCall(PCSetType(pc, PCNONE));

  /* Vector and matrix must be set before calling PCSetUp */
  PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF, n, n, 3, NULL, &mat));
  PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
  PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
  PetscCall(PCSetOperators(pc, mat, mat));
  PetscCall(PCSetUp(pc));
  PetscCall(MatDestroy(&mat));
  PetscCall(PCDestroy(&pc));
  PetscCall(PetscFinalize());
  return 0;
}

/*TEST

   test:
     output_file: output/empty.out

TEST*/