added test getindex AffineAdd

Author: nantonel

src/syntax.jl

@@ -86,6 +86,9 @@ function getindex{M,N,L,P,C,A<:VCAT{M,N,L,P,C}}(H::A, idx::Union{AbstractArray,I
 	end
 end
 
+getindex(H::A, idx::Union{AbstractArray,Int}) where {L <: HCAT, D, S, A<: AffineAdd{L,D,S}} = 
+AffineAdd(getindex(H.A, idx), H.d, S) 
+
 # get index of scale
 getindex{T, L, S <:Scale{T,L}}(A::S,idx...) = Scale(A.coeff,A.coeff_conj,getindex(A.A,idx...))
 

test/test_syntax.jl

@@ -207,6 +207,12 @@ opHperm = opH[[3,1,2]]
 opHperm = opH[[3,1]]
 @test norm(opC*x3+opA*x1 - opHperm*(x3,x1)) <1e-12
 
+# slicing Affine add of HCAT
+d = randn(n)
+opHA = AffineAdd(opH,d)
+@test norm(opHA[1]*x1-(A*x1+d)) < 1e-9
+@test norm(opHA[2]*x2-(B*x2+d)) < 1e-9
+@test norm(opHA[3]*x3-(C*x3+d)) < 1e-9
 
 m4 = 9
 x4 = randn(m4)