fix and test mixed CartesianIndex

[rafaqz]

Fixes #259

@lupemba hopefully this solves your issue

[lupemba]

I just did a small test and discovered that it doesn't work for the views.

using DiskArrays: ReshapedDiskArray, PermutedDiskArray
using DiskArrays.TestTypes

a = AccessCountDiskArray(reshape(1:24, 2, 3, 4), chunksize=(2, 2, 2))
a[CartesianIndex(1, 2), 1:end] # works now
@view a[CartesianIndex(1, 2), 1:end] # fails

I don't think I need the functionality but I just wanted to share it right away before I forget.

[rafaqz]

In the latest push? I tried to fix view too, it works in the tests now. Have to check why this argument combo doesn't work.

[lupemba]

Yes in the latest commit on this branch. The error comes from "DiskArrays.jl/src/subarray.jl:65"

i2 = _replace_colon.(size(a), i) size(a) has length 3 and i only has length 2 so broadcasting fails.

ERROR: DimensionMismatch: arrays could not be broadcast to a common size: a has axes Base.OneTo(3) and b has axes Base.OneTo(2)
Stacktrace:
  [1] _bcs1
    @ ./broadcast.jl:528 [inlined]
  [2] _bcs
    @ ./broadcast.jl:522 [inlined]
  [3] broadcast_shape(::Tuple{Base.OneTo{Int64}}, ::Tuple{Base.OneTo{Int64}})
    @ Base.Broadcast ./broadcast.jl:516
  [4] combine_axes
    @ ./broadcast.jl:497 [inlined]
  [5] _axes
    @ ./broadcast.jl:236 [inlined]
  [6] axes
    @ ./broadcast.jl:234 [inlined]
  [7] copy
    @ ./broadcast.jl:1099 [inlined]
  [8] materialize
    @ ./broadcast.jl:872 [inlined]
  [9] view(::AccessCountDiskArray{…}, ::CartesianIndex{…}, ::UnitRange{…})
    @ DiskArrays ~/Documents/git repos/DiskArrays.jl/src/subarray.jl:65
 [10] top-level scope
    @ ~/Documents/git repos/DiskArrays.jl/small_test.jl:6
Some type information was truncated. Use `show(err)` to see complete types.

[rafaqz]

Ok thanks, I'll fix that tomorrow or monday