Fix array constructor (#416)

* eltype -> T

* add tests

* undo auto-format

* add compat for Images

* only use `RGB` from images

* try colors

* back to images

* fix Fill ambiguity

* original formatting

* Replace testset

* oops, begin

* bump patch version

---------

Co-authored-by: Kevin Bonham <[email protected]>

Author: kescobo

Project.toml

@@ -1,6 +1,6 @@
 name = "BlockArrays"
 uuid = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
-version = "1.1.0"
+version = "1.1.1"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
@@ -20,6 +20,7 @@ ArrayLayouts = "1.0.8"
 BandedMatrices = "1.0"
 Documenter = "1.0"
 FillArrays = "1.11"
+Images = "0.26"
 LinearAlgebra = "1.6"
 OffsetArrays = "1.0"
 Random = "1.6"
@@ -32,11 +33,22 @@ julia = "1.6"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 BandedMatrices = "aae01518-5342-5314-be14-df237901396f"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+Images = "916415d5-f1e6-5110-898d-aaa5f9f070e0"
 OffsetArrays = "6fe1bfb0-de20-5000-8ca7-80f57d26f881"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua", "BandedMatrices", "Documenter", "OffsetArrays", "SparseArrays", "StaticArrays", "Test", "Random"]
+test = [
+    "Aqua",
+    "BandedMatrices",
+    "Documenter",
+    "Images",
+    "OffsetArrays",
+    "SparseArrays",
+    "StaticArrays",
+    "Test",
+    "Random",
+]

src/blockarray.jl

@@ -549,7 +549,7 @@ function Base.Array(zerodim::BlockArray{T, 0}) where {T}
 end
 
 function Base.Array(block_array::BlockArray{T, N, R}) where {T,N,R}
-    arr = Array{eltype(T)}(undef, size(block_array))
+    arr = Array{T}(undef, size(block_array))
     for block_index in Iterators.product(blockaxes(block_array)...)
         indices = getindex.(axes(block_array), block_index)
         arr[indices...] = @view block_array[block_index...]

test/test_blockarrays.jl

@@ -1,8 +1,10 @@
 module TestBlockArrays
 
-using SparseArrays, BlockArrays, FillArrays, LinearAlgebra, Test, OffsetArrays
+using SparseArrays, BlockArrays, FillArrays, LinearAlgebra, Test, OffsetArrays, Images
 import BlockArrays: _BlockArray
 
+const Fill = FillArrays.Fill
+
 function test_error_message(f, needle, expected = Exception)
     err = nothing
     try