Fix ambiguity with MappedOPs and Expansions

Author: dlfivefifty

Project.toml

@@ -1,7 +1,7 @@
 name = "ClassicalOrthogonalPolynomials"
 uuid = "b30e2e7b-c4ee-47da-9d5f-2c5c27239acd"
 authors = ["Sheehan Olver <[email protected]>"]
-version = "0.11.5"
+version = "0.11.6"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

src/ClassicalOrthogonalPolynomials.jl

@@ -117,6 +117,7 @@ equals_layout(::WeightedBasisLayout{<:AbstractOPLayout}, ::WeightedBasisLayout{<
 
 
 copy(L::Ldiv{MappedOPLayout,Lay}) where Lay = copy(Ldiv{MappedBasisLayout,Lay}(L.A,L.B))
+copy(L::Ldiv{MappedOPLayout,Lay}) where Lay<:ExpansionLayout = copy(Ldiv{MappedBasisLayout,Lay}(L.A,L.B))
 copy(L::Ldiv{MappedOPLayout,Lay}) where Lay<:AbstractLazyLayout = copy(Ldiv{MappedBasisLayout,Lay}(L.A,L.B))
 copy(L::Ldiv{MappedOPLayout,Lay}) where Lay<:AbstractBasisLayout = copy(Ldiv{MappedBasisLayout,Lay}(L.A,L.B))
 copy(L::Ldiv{MappedOPLayout,BroadcastLayout{typeof(-)}}) = copy(Ldiv{MappedBasisLayout,BroadcastLayout{typeof(-)}}(L.A,L.B))

test/test_chebyshev.jl

@@ -186,6 +186,13 @@ import ContinuumArrays: MappedWeightedBasisLayout, Map, WeightedBasisLayout
             @test T \ (exp.(x) .+ cos.(x)) ≈ transform(T, x -> exp(x)+cos(x))
             @test T \ (exp.(x) .- cos.(x)) ≈ transform(T, x -> exp(x)-cos(x))
         end
+
+        @testset "expansion" begin
+            x = Inclusion(0..1)
+            T = Chebyshev()[2x .- 1,:]
+            f = T * [1:3; zeros(∞)]
+            @test T \ f ≈ [1:3; zeros(∞)]
+        end
     end
 
     @testset "weighted" begin