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Adding a test for convert to PETScMatrix #79

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Feb 16, 2022
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Adding a test for convert to PETScMatrix #79

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23 changes: 22 additions & 1 deletion test/PoissonTests.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@ using GridapPETSc
using GridapPETSc: PETSC
using PartitionedArrays
using Test
using SparseMatricesCSR


# Setup solver via low level PETSC API calls
function mykspsetup(ksp)
Expand Down Expand Up @@ -67,14 +69,33 @@ function main(parts,solver)

a(u,v) = ∫( ∇(v)⋅∇(u) )dΩ
l(v) = ∫( v*f )dΩ + ∫( v*g )dΓn
assem=SparseMatrixAssembler(SparseMatrixCSR{0,PetscScalar,PetscInt},Vector{Float64},U,V)

Tm=SparseMatrixCSR{0,PetscScalar,PetscInt}
Tv=Vector{PetscScalar}
assem=SparseMatrixAssembler(Tm,Tv,U,V)
op = AffineFEOperator(a,l,U,V,assem)

v_julia = get_vector(op)
v_petsc = convert(PETScVector,v_julia)
copy!(v_julia,v_petsc)
copy!(v_petsc,v_julia)

# Checking that convert performs deep copies and does not modify A
A=get_matrix(op)
vals_copy=map_parts(A.values) do A
@test typeof(A)==SparseMatrixCSR{0,PetscScalar,PetscInt}
i=copy(A.rowptr)
j=copy(A.colval)
a=copy(A.nzval)
i,j,a
end
Apetsc=convert(PETScMatrix,A)
map_parts(A.values,vals_copy) do A, (i,j,a)
@test all(i .== A.rowptr)
@test all(j .== A.colval)
@test all(a .== A.nzval)
end

if solver == :mumps
ls = PETScLinearSolver(mykspsetup)
else
Expand Down