TCP echo server

src/tcp/tcp.gleam

@@ -105,7 +105,7 @@ fn gen_tcp_connect(
 ) -> Result(Socket, Reason)
 
 // https://www.erlang.org/doc/apps/kernel/gen_tcp.html#send/2
-@external(erlang, "ipc_ffi", "send")
+@external(erlang, "tcp_ffi", "send")
 fn gen_tcp_send(socket: Socket, packet: BitArray) -> Result(Nil, Reason)
 
 // https://www.erlang.org/doc/apps/kernel/gen_tcp.html#close/1
@@ -113,5 +113,5 @@ fn gen_tcp_send(socket: Socket, packet: BitArray) -> Result(Nil, Reason)
 fn gen_tcp_close(socket: Socket) -> Nil
 
 // https://www.erlang.org/doc/apps/kernel/gen_tcp.html#shutdown/2
-@external(erlang, "gen_tcp", "shutdown")
+@external(erlang, "tcp_ffi", "shutdown")
 fn gen_tcp_shutdown(socket: Socket, how: atom.Atom) -> Result(Nil, Reason)

test/musicplayer_test.gleam

@@ -9,7 +9,7 @@ pub fn main() -> Nil {
   gleeunit.main()
 }
 
-pub fn foo_test() {
+pub fn tcp_send_shutdown_receive_test() {
   let socket_path = "/tmp/musicplayer-test.sock"
 
   let assert Ok(_) = echo_server.new(socket_path)
@@ -20,15 +20,7 @@ pub fn foo_test() {
     let assert Ok(_) = tcp.send(socket, message)
   })
 
-  // TODO not valid syntax?
-  // let assert Ok(Nil) = tcp.shutdown(socket)
-  //
-  // test: musicplayer_test.foo_test
-  // code: let assert Ok(Nil) = tcp.shutdown(socket)
-  // value: Ok
-  // info: Pattern match failed, no pattern matched the value.
-
-  let _ = tcp.shutdown(socket)
+  let assert Ok(_) = tcp.shutdown(socket)
 
   let timeout_ms = 100
   assert Ok("hello, world!\n") == tcp.receive(socket, timeout_ms)