[BlockSparseArrys] Fix nested slicing in Julia 1.11 (#1575)

* [BlockSparseArrys] Fix nested slicing in Julia 1.11

* [NDTensors] Bump to v0.3.60

Author: mtfishman

NDTensors/Project.toml

@@ -1,7 +1,7 @@
 name = "NDTensors"
 uuid = "23ae76d9-e61a-49c4-8f12-3f1a16adf9cf"
 authors = ["Matthew Fishman <[email protected]>"]
-version = "0.3.59"
+version = "0.3.60"
 
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"

NDTensors/src/lib/BlockSparseArrays/src/BlockArraysExtensions/BlockArraysExtensions.jl

@@ -42,6 +42,10 @@ struct NonBlockedArray{T,N,Array<:AbstractArray{T,N}} <: AbstractArray{T,N}
 end
 Base.size(a::NonBlockedArray) = size(a.array)
 Base.getindex(a::NonBlockedArray{<:Any,N}, I::Vararg{Integer,N}) where {N} = a.array[I...]
+# Views of `NonBlockedArray`/`NonBlockedVector` are eager.
+# This fixes an issue in Julia 1.11 where reindexing defaults to using views.
+# TODO: Maybe reconsider this design, and allows views to work in slicing.
+Base.view(a::NonBlockedArray, I...) = a[I...]
 BlockArrays.blocks(a::NonBlockedArray) = SingleBlockView(a.array)
 const NonBlockedVector{T,Array} = NonBlockedArray{T,1,Array}
 NonBlockedVector(array::AbstractVector) = NonBlockedArray(array)
@@ -81,6 +85,9 @@ function Base.getindex(
 )
   return i
 end
+# Views of `BlockIndices` are eager.
+# This fixes an issue in Julia 1.11 where reindexing defaults to using views.
+Base.view(S::BlockIndices, i) = S[i]
 
 # Used in indexing such as:
 # ```julia

NDTensors/src/lib/BlockSparseArrays/test/test_basics.jl

@@ -691,31 +691,21 @@ using .NDTensorsTestUtils: devices_list, is_supported_eltype
     c = @view b[4:8, 4:8]
     @test c isa SubArray{<:Any,<:Any,<:BlockSparseArray}
     @test size(c) == (5, 5)
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test block_nstored(c) == 2 broken = VERSION > v"1.11-"
+    @test block_nstored(c) == 2
     @test blocksize(c) == (2, 2)
     @test blocklengths.(axes(c)) == ([2, 3], [2, 3])
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test size(c[Block(1, 1)]) == (2, 2) broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test c[Block(1, 1)] == a[Block(2, 2)[2:3, 2:3]] broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test size(c[Block(2, 2)]) == (3, 3) broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test c[Block(2, 2)] == a[Block(1, 1)[1:3, 1:3]] broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test size(c[Block(2, 1)]) == (3, 2) broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test iszero(c[Block(2, 1)]) broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test size(c[Block(1, 2)]) == (2, 3) broken = VERSION ≥ v"1.11-"
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test iszero(c[Block(1, 2)]) broken = VERSION ≥ v"1.11-"
+    @test size(c[Block(1, 1)]) == (2, 2)
+    @test c[Block(1, 1)] == a[Block(2, 2)[2:3, 2:3]]
+    @test size(c[Block(2, 2)]) == (3, 3)
+    @test c[Block(2, 2)] == a[Block(1, 1)[1:3, 1:3]]
+    @test size(c[Block(2, 1)]) == (3, 2)
+    @test iszero(c[Block(2, 1)])
+    @test size(c[Block(1, 2)]) == (2, 3)
+    @test iszero(c[Block(1, 2)])
 
     x = randn(elt, 3, 3)
     c[Block(2, 2)] = x
-    # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-    @test c[Block(2, 2)] == x broken = VERSION ≥ v"1.11-"
+    @test c[Block(2, 2)] == x
     @test a[Block(1, 1)[1:3, 1:3]] == x
 
     a = BlockSparseArray{elt}([2, 3], [3, 4])
@@ -776,17 +766,13 @@ using .NDTensorsTestUtils: devices_list, is_supported_eltype
       @test copy(b) == a[J, J]
       @test blocksize(b) == (2, 2)
       @test blocklengths.(axes(b)) == ([4, 4], [4, 4])
-      # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-      @test b[Block(1, 1)] == Array(a)[[7, 8, 5, 6], [7, 8, 5, 6]] broken =
-        VERSION ≥ v"1.11-"
+      @test b[Block(1, 1)] == Array(a)[[7, 8, 5, 6], [7, 8, 5, 6]]
       c = @views b[Block(1, 1)][2:3, 2:3]
       @test c == Array(a)[[8, 5], [8, 5]]
-      # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-      @test copy(c) == Array(a)[[8, 5], [8, 5]] broken = VERSION ≥ v"1.11-"
+      @test copy(c) == Array(a)[[8, 5], [8, 5]]
       c = @view b[Block(1, 1)[2:3, 2:3]]
       @test c == Array(a)[[8, 5], [8, 5]]
-      # TODO: Fix in Julia 1.11 (https://github.com/ITensor/ITensors.jl/pull/1539).
-      @test copy(c) == Array(a)[[8, 5], [8, 5]] broken = VERSION ≥ v"1.11-"
+      @test copy(c) == Array(a)[[8, 5], [8, 5]]
     end
 
     # TODO: Add more tests of this, it may