start Y + I tests

Author: dlfivefifty

src/InfiniteLinearAlgebra.jl

@@ -118,7 +118,7 @@ pad(c::Transpose, ax, bx) = transpose(pad(parent(c), bx, ax))
 pad(c::Adjoint, ax, bx) = adjoint(pad(parent(c), bx, ax))
 pad(c::BlockVec, ax::BlockedOneTo{Int,<:InfStepRange}) = BlockVec(pad(c.args[1], size(c.args[1],1), ∞))
 
-export ∞, ContinuousSpectrumError, BlockTridiagonal
+export ∞, ContinuousSpectrumError, BlockTridiagonal, TridiagonalConjugation, BidiagonalConjugation
 
 include("banded/hessenbergq.jl")
 

src/infcholesky.jl

@@ -29,6 +29,8 @@ adaptivecholeskyfactorslayout(::BlockBandedLayouts) = AdaptiveCholeskyFactorsBlo
 
 
 MemoryLayout(::Type{AdaptiveCholeskyFactors{T,DM}}) where {T,DM} = adaptivecholeskyfactorslayout(MemoryLayout(DM))
+triangularlayout(::Type{Tri}, ::ML) where {Tri, ML<:AdaptiveCholeskyFactorsLayouts} = Tri{ML}()
+transposelayout(A::AdaptiveCholeskyFactorsLayouts) = A
 
 copy(A::AdaptiveCholeskyFactors) = AdaptiveCholeskyFactors(copy(A.data), copy(A.ncols))
 copy(A::Adjoint{T,<:AdaptiveCholeskyFactors}) where T = copy(parent(A))'

test/test_bidiagonalconjugation.jl

@@ -192,5 +192,12 @@ end
         Y = SymTridiagonalConjugation(R, X)
         n = 100_000
         @test Y[n,n+1] ≈ 1/2
+
+        @testset "Y+I" begin
+            Y+I
+            Y-I
+            I+Y
+            I-Y
+        end
     end
 end