using Flux:onecold
using Test

@testset "onecold" begin
  a = [1, 2, 5, 3.]
  A = [1 20 5; 2 7 6; 3 9 10; 2 1 14]
  labels = ['A', 'B', 'C', 'D']

  @test onecold(a) == 3
  @test onecold(A) == [3, 1, 4]
  @test onecold(a, labels) == 'C'
  @test onecold(A, labels) == ['C', 'A', 'D']
end

@testset "onehotbatch indexing" begin
  y = Flux.onehotbatch(ones(3), 1:10)
  @test y[:,1] isa Flux.OneHotVector
  @test y[:,:] isa Flux.OneHotMatrix
end