diff --git a/src/BufferStream.jl b/src/BufferStream.jl
index 28f1458..ca655be 100644
--- a/src/BufferStream.jl
+++ b/src/BufferStream.jl
@@ -1,5 +1,5 @@
 export BufferStream, mem_usage, append_chunk
-import Base: write, read, readbytes!, readavailable, unsafe_write, wait, close, eof, isopen, skip, length
+import Base: write, read, readbytes!, readavailable, unsafe_write, wait, close, eof, isopen, isreadable, iswritable, skip, length
 
 """
     BufferStream
@@ -28,6 +28,8 @@ function close(bs::BufferStream)
 end
 
 isopen(bs::BufferStream) = bs.is_open
+isreadable(bs::BufferStream) = true
+iswritable(bs::BufferStream) = true
 eof(bs::BufferStream) = !isopen(bs) && isempty(bs.chunks)
 function length(bs::BufferStream)
     lock(bs.write_cond) do
diff --git a/test/runtests.jl b/test/runtests.jl
index 22efccc..d1c8237 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -77,6 +77,16 @@ using SimpleBufferStream, Test
     @test write(bs, UInt8(1)) == 1
     close(bs)
     @test read(bs) == UInt8[1]
+
+    # isreadable, iswritable, isopen
+    bs = BufferStream()
+    @test isopen(bs)
+    @test isreadable(bs)
+    @test iswritable(bs)
+    close(bs)
+    @test !isopen(bs)
+    @test isreadable(bs)
+    @test iswritable(bs)
 end
 
 @testset "max_len" begin