Assembler is not optional in FEOperators

Author: fverdugo

src/FESpaces/FEOperators.jl

@@ -262,7 +262,7 @@ struct NonLinearFEOperator <:FEOperator
   testfesp::FESpaceLike
   trialfesp::FESpaceLike
   assem::AssemblerLike
-  terms::Tuple{<:FETerm}
+  terms::NTuple{N,<:FETerm} where N
 end
 
 function NonLinearFEOperator(
@@ -278,7 +278,7 @@ function NonLinearFEOperator(
   trialfesp::FESpaceLike,
   terms::Vararg{<:FETerm})
   assem = SparseMatrixAssembler(testfesp,trialfesp)
-  NonLinearFEOperator(testfesp,trialfesp,assem,terms...)
+  NonLinearFEOperator(testfesp,trialfesp,assem,terms)
 end
 
 function NonLinearFEOperator(

test/FESpacesTests/VectorValuedNonLinearFEOperatorsTests.jl

@@ -82,4 +82,9 @@ eh1 = sqrt(sum( integrate(h1(e),trian,quad) ))
 @test el2 < 1.e-8
 @test eh1 < 1.e-8
 
+
+# Further tests
+op = NonLinearFEOperator(V,U,t_Ω)
+op = NonLinearFEOperator(V,U,t_Ω,t_Ω)
+
 end # module

test/MultiFieldTests/MultiFEOperatorsTests.jl

@@ -101,5 +101,6 @@ e2h1 = sqrt(sum( integrate(h1(e2),trian,quad) ))
 
 op = LinearFEOperator(a,b,V,U,assem,trian,quad)
 op = LinearFEOperator(V,U,t_Ω,t_Γ)
+op = LinearFEOperator(V,U,t_Ω)
 
 end