add Memory(data::Vector{UInt8}) constructor

Author: bicycle1885

src/memory.jl

@@ -11,6 +11,10 @@ struct Memory
     size::UInt
 end
 
+function Memory(data::Vector{UInt8})
+    return Memory(pointer(data), sizeof(data))
+end
+
 function Base.length(mem::Memory)
     return mem.size
 end

test/runtests.jl

@@ -23,6 +23,12 @@ using Base.Test
     @test mem[3] === UInt8('!')
     @test_throws BoundsError mem[7] = 0x00
     @test_throws BoundsError mem[0] = 0x00
+
+    data = b"foobar"
+    mem = TranscodingStreams.Memory(data)
+    @test mem isa TranscodingStreams.Memory
+    @test mem.ptr == pointer(data)
+    @test mem.size == sizeof(data)
 end
 
 @testset "Identity Codec" begin