copy for AbstractConcatBasis (#116)

* copy for AbstractConcatBasis

* Update test_basisconcat.jl

Author: dlfivefifty

Project.toml

@@ -1,6 +1,6 @@
 name = "ContinuumArrays"
 uuid = "7ae1f121-cc2c-504b-ac30-9b923412ae5c"
-version = "0.9.0"
+version = "0.9.1"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

src/basisconcat.jl

@@ -6,6 +6,8 @@ with modified axes.
 """
 abstract type AbstractConcatBasis{T} <: Basis{T} end
 
+copy(S::AbstractConcatBasis) = S
+
 @simplify function *(D::Derivative, S::AbstractConcatBasis)
     axes(D,2) == axes(S,1) || throw(DimensionMismatch())
     args = arguments.(Ref(ApplyLayout{typeof(*)}()), Derivative.(axes.(S.args,1)) .* S.args)

test/test_basisconcat.jl

@@ -7,7 +7,7 @@ import ContinuumArrays: PiecewiseBasis, VcatBasis, HvcatBasis, arguments, ApplyL
         S2 = LinearSpline(2:3)
         S = PiecewiseBasis(S1, S2)
 
-        @test S == S
+        @test S == S == copy(S)
         @test checkpoints(S) == union(checkpoints(S1), checkpoints(S2))
 
         @test S[0.5,1:4] == [S1[0.5,1:2]; zeros(2)]