From 2ac047b8c196149b09aa160df0a71cd0556725be Mon Sep 17 00:00:00 2001
From: mtfishman <mfishman@flatironinstitute.org>
Date: Thu, 27 Feb 2025 12:18:40 -0500
Subject: [PATCH] Update to NamedDimsArrays.jl v0.5

---
 Project.toml           |  4 ++--
 src/abstractitensor.jl |  5 +++--
 test/test_basics.jl    | 23 +++++++++++++++++++++++
 3 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/Project.toml b/Project.toml
index bb8971b..c035dfc 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ITensorBase"
 uuid = "4795dd04-0d67-49bb-8f44-b89c448a1dc7"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
-version = "0.1.18"
+version = "0.1.19"
 
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
@@ -32,7 +32,7 @@ FillArrays = "1.13.0"
 GradedUnitRanges = "0.1.4"
 LinearAlgebra = "1.10"
 MapBroadcast = "0.1.5"
-NamedDimsArrays = "0.4.5"
+NamedDimsArrays = "0.5.0"
 SparseArraysBase = "0.2.11"
 UnallocatedArrays = "0.1.1"
 UnspecifiedTypes = "0.1.1"
diff --git a/src/abstractitensor.jl b/src/abstractitensor.jl
index 8a7060f..e24e346 100644
--- a/src/abstractitensor.jl
+++ b/src/abstractitensor.jl
@@ -86,8 +86,9 @@ mutable struct ITensor <: AbstractITensor
     return new(parent, nameddimsindices)
   end
 end
-Base.parent(a::ITensor) = a.parent
-NamedDimsArrays.nameddimsindices(a::ITensor) = a.nameddimsindices
+Base.parent(a::ITensor) = getfield(a, :parent)
+NamedDimsArrays.nameddimsindices(a::ITensor) = getfield(a, :nameddimsindices)
+NamedDimsArrays.dename(a::ITensor) = parent(a)
 
 function ITensor(parent::AbstractArray, i1::Index, i_rest::Index...)
   return ITensor(parent, (i1, i_rest...))
diff --git a/test/test_basics.jl b/test/test_basics.jl
index 9b5dd11..b2a18fd 100644
--- a/test/test_basics.jl
+++ b/test/test_basics.jl
@@ -39,6 +39,29 @@ using Test: @test, @test_broken, @test_throws, @testset
     @test_throws ErrorException ITensor(randn(elt, 2, 2), Index.((2, 3)))
     @test_throws ErrorException ITensor(randn(elt, 4), Index.((2, 2)))
 
+    i, j = Index.((3, 4))
+    a = randn(elt, i, j)
+    a′ = Array(a)
+    @test eltype(a′) === elt
+    @test a′ isa Matrix{elt}
+    @test a′ == dename(a)
+
+    i, j = Index.((3, 4))
+    a = randn(elt, i, j)
+    for a′ in (Array{Float32}(a), Matrix{Float32}(a))
+      @test eltype(a′) === Float32
+      @test a′ isa Matrix{Float32}
+      @test a′ == Float32.(dename(a))
+    end
+
+    i, j, k = Index.((2, 2, 2))
+    a = randn(elt, i, j, k)
+    b = randn(elt, k, i, j)
+    copyto!(a, b)
+    @test a == b
+    @test dename(a) == dename(b, (i, j, k))
+    @test dename(a) == permutedims(dename(b), (2, 3, 1))
+
     i = Index(2)
     @test plev(i) == 0
     i = setprime(i, 2)