add more block slice converts (#146)

* add more block slice converts

* Update test_blockindices.jl

Author: dlfivefifty

src/blockindices.jl

@@ -368,5 +368,9 @@ intersect(a::BlockRange{1}, b::BlockRange{1}) = BlockRange(intersect(a.indices[1
 
 # needed for scalar-like broadcasting
 
+BlockSlice{Block{1,BT},RT}(a::Base.OneTo) where {BT,RT<:AbstractUnitRange} = 
+    BlockSlice(Block(convert(BT, 1)), convert(RT, a))::BlockSlice{Block{1,BT},RT}
 BlockSlice{BlockRange{1,Tuple{BT}},RT}(a::Base.OneTo) where {BT<:AbstractUnitRange,RT<:AbstractUnitRange} = 
-    BlockSlice(BlockRange(convert(BT, Base.OneTo(1))), convert(RT, a))::BlockSlice{BlockRange{1,Tuple{BT}},RT}
+    BlockSlice(BlockRange(convert(BT, Base.OneTo(1))), convert(RT, a))::BlockSlice{BlockRange{1,Tuple{BT}},RT}
+BlockSlice{BlockIndexRange{1,Tuple{BT}},RT}(a::Base.OneTo) where {BT<:AbstractUnitRange,RT<:AbstractUnitRange} = 
+    BlockSlice(BlockIndexRange(Block(1), convert(BT, Base.OneTo(1))), convert(RT, a))::BlockSlice{BlockIndexRange{1,Tuple{BT}},RT}

test/test_blockindices.jl

@@ -300,6 +300,12 @@ end
     @test b[Base.Slice(1:3)] ≡ b
     @test b[1:2] ≡ b[1:2][1:2] ≡ BlockSlice(Block(5)[1:2],1:2)
     @test Block(b) ≡ Block(5)
+
+    @testset "OneTo converts" begin
+        for b in (BlockSlice(Block(1), 1:1), BlockSlice(Block.(1:1), 1:1), BlockSlice(Block(1)[1:1], 1:1))
+            @test convert(typeof(b), Base.OneTo(1)) ≡ b
+        end
+    end
 end
 
 #=