Send some messages

gleam.toml

@@ -14,10 +14,6 @@ version = "1.0.0"
 
 [dependencies]
 gleam_stdlib = ">= 0.44.0 and < 2.0.0"
-gleam_otp = ">= 1.2.0 and < 2.0.0"
-gleam_erlang = ">= 1.3.0 and < 2.0.0"
-simplifile = ">= 2.3.1 and < 3.0.0"
-gleam_json = ">= 3.1.0 and < 4.0.0"
 
 [dev-dependencies]
 gleeunit = ">= 1.0.0 and < 2.0.0"

manifest.toml

@@ -2,19 +2,10 @@
 # You typically do not need to edit this file
 
 packages = [
-  { name = "filepath", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "B06A9AF0BF10E51401D64B98E4B627F1D2E48C154967DA7AF4D0914780A6D40A" },
-  { name = "gleam_erlang", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "1124AD3AA21143E5AF0FC5CF3D9529F6DB8CA03E43A55711B60B6B7B3874375C" },
-  { name = "gleam_json", version = "3.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_json", source = "hex", outer_checksum = "44FDAA8847BE8FC48CA7A1C089706BD54BADCC4C45B237A992EDDF9F2CDB2836" },
-  { name = "gleam_otp", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "BA6A294E295E428EC1562DC1C11EA7530DCB981E8359134BEABC8493B7B2258E" },
   { name = "gleam_stdlib", version = "0.65.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "7C69C71D8C493AE11A5184828A77110EB05A7786EBF8B25B36A72F879C3EE107" },
   { name = "gleeunit", version = "1.9.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "DA9553CE58B67924B3C631F96FE3370C49EB6D6DC6B384EC4862CC4AAA718F3C" },
-  { name = "simplifile", version = "2.3.1", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "957E0E5B75927659F1D2A1B7B75D7B9BA96FAA8D0C53EA71C4AD9CD0C6B848F6" },
 ]
 
 [requirements]
-gleam_erlang = { version = ">= 1.3.0 and < 2.0.0" }
-gleam_json = { version = ">= 3.1.0 and < 4.0.0" }
-gleam_otp = { version = ">= 1.2.0 and < 2.0.0" }
 gleam_stdlib = { version = ">= 0.44.0 and < 2.0.0" }
 gleeunit = { version = ">= 1.0.0 and < 2.0.0" }
-simplifile = { version = ">= 2.3.1 and < 3.0.0" }

src/input/internal.gleam

@@ -1,15 +0,0 @@
-import gleam/erlang/atom
-
-pub fn read_input() -> String {
-  io_get_chars("", 1)
-}
-
-pub type NotUsed
-
-// https://www.erlang.org/doc/apps/stdlib/shell.html#start_interactive/1
-@external(erlang, "shell", "start_interactive")
-pub fn shell_start_interactive(options: #(atom.Atom, atom.Atom)) -> NotUsed
-
-// https://www.erlang.org/doc/apps/stdlib/io.html#get_chars/2
-@external(erlang, "io", "get_chars")
-fn io_get_chars(prompt: String, count: Int) -> String

src/input/key.gleam

@@ -1,83 +0,0 @@
-import gleam/erlang/atom
-import gleam/erlang/process.{type Subject}
-import gleam/list
-import gleam/string
-
-import input/internal as internal_input
-
-pub type Key {
-  Char(String)
-
-  Input(String)
-  Left
-  Right
-  Up
-  Down
-
-  Continue(buffer: List(String))
-  Unknown
-}
-
-pub const esc = "\u{001B}"
-
-// control sequence introducer
-pub const csi = "["
-
-// input introducer
-pub const input_introducer = "::"
-
-pub fn from_list(l: List(String)) -> Key {
-  case l {
-    [e, c, "D"] if e == esc && c == csi -> Left
-    [e, c, "C"] if e == esc && c == csi -> Right
-    [e, c, "A"] if e == esc && c == csi -> Up
-    [e, c, "B"] if e == esc && c == csi -> Down
-
-    [e, c] if e == esc && c == csi -> Continue(l)
-
-    [ci] | [ci, _] if ci == input_introducer -> Continue(l)
-    [ii, cmd, tail] if ii == input_introducer -> {
-      case tail {
-        // Return
-        "\r" -> Input(cmd)
-        // Backspace
-        "\u{007F}" -> Continue([ii, string.drop_end(cmd, 1)])
-        _ -> Continue([ii, cmd <> tail])
-      }
-    }
-
-    [e] if e == esc -> Continue(l)
-    [char] -> Char(char)
-
-    [] -> Continue([])
-    _ -> Unknown
-  }
-}
-
-pub fn start_raw_shell() {
-  let no_shell = atom.create("noshell")
-  let raw = atom.create("raw")
-  internal_input.shell_start_interactive(#(no_shell, raw))
-}
-
-pub fn read_input_until_key(
-  l: List(String),
-  input_sink: Subject(List(String)),
-) -> Key {
-  case
-    internal_input.read_input()
-    |> list.wrap
-    |> list.append(l, _)
-    |> from_list
-  {
-    Continue(l) -> {
-      echo "key:read_input_until_key continue: " <> string.inspect(l)
-      process.send(input_sink, l)
-      read_input_until_key(l, input_sink)
-    }
-    k -> {
-      echo "key:read_input_until_key k: " <> string.inspect(k)
-      k
-    }
-  }
-}

src/mpv/control.gleam

@@ -1,77 +0,0 @@
-import gleam/json
-import gleam/result
-import gleam/string
-
-import input/key.{type Key}
-import mpv/internal/control as internal_control
-import tcp/reason.{type Reason}
-import tcp/tcp.{type Socket}
-
-pub type Control {
-  TogglePlayPause
-
-  Search
-
-  Exit
-}
-
-pub type ControlError {
-  ControlError(details: String)
-}
-
-pub fn from_key(key: Key) -> Result(Control, Nil) {
-  case key {
-    key.Char(char) -> char_control(char)
-    _ -> Error(Nil)
-  }
-}
-
-fn char_control(char: String) -> Result(Control, Nil) {
-  case char {
-    " " -> Ok(TogglePlayPause)
-    "/" -> Ok(Search)
-    "q" -> Ok(Exit)
-    _ -> Error(Nil)
-  }
-}
-
-pub fn toggle_play_pause(socket: Socket) -> Result(Nil, ControlError) {
-  let command =
-    json.object([#("command", json.array(["cycle", "pause"], of: json.string))])
-
-  case send_command(socket, command) {
-    Error(r) -> Error(ControlError(reason.to_string(r)))
-    Ok(_) -> Ok(Nil)
-  }
-}
-
-// https://mpv.io/manual/master/#command-interface-playback-time
-pub type PlaybackTime {
-  PlaybackTime(data: Float)
-}
-
-pub fn get_playback_time(socket: Socket) -> Result(PlaybackTime, ControlError) {
-  let command =
-    json.object([
-      #(
-        "command",
-        json.array(["get_property_string", "playback-time"], of: json.string),
-      ),
-    ])
-
-  case send_command(socket, command) {
-    Error(r) -> Error(ControlError(reason.to_string(r)))
-    Ok(json_string) ->
-      case internal_control.parse_playback_time(json_string) {
-        Error(e) -> Error(ControlError(string.inspect(e)))
-        Ok(data) -> Ok(PlaybackTime(data))
-      }
-  }
-}
-
-fn send_command(socket: Socket, command: json.Json) -> Result(String, Reason) {
-  result.try(tcp.send(socket, json.to_string(command) <> "\n"), fn(_) {
-    let timeout_ms = 10_000
-    tcp.receive(socket, timeout_ms)
-  })
-}

src/mpv/internal/control.gleam

@@ -1,25 +0,0 @@
-import gleam/dynamic/decode
-import gleam/float
-import gleam/json
-import gleam/string
-
-pub fn parse_playback_time(
-  json_string: String,
-) -> Result(Float, json.DecodeError) {
-  let decoder = {
-    let float_dececoder = fn(data_string) {
-      case float.parse(data_string) {
-        Error(_) -> decode.failure(0.0, "data")
-        Ok(float_value) -> decode.success(float_value)
-      }
-    }
-    use data <- decode.field(
-      "data",
-      decode.then(decode.string, float_dececoder),
-    )
-
-    decode.success(data)
-  }
-
-  json.parse(from: string.trim(json_string), using: decoder)
-}

src/mpv/mpv.gleam

@@ -1,118 +0,0 @@
-import gleam/erlang/process.{type Subject}
-import gleam/float
-import gleam/otp/actor
-import gleam/result
-import gleam/string
-
-import input/key.{type Key}
-import mpv/control.{type Control}
-import tcp/reason
-import tcp/tcp.{type Socket}
-import ui/ui.{type Event}
-
-type State(socket, inject_input, ui, exit) {
-  State(
-    socket: Socket,
-    inject_input: Subject(Key),
-    ui: Subject(Event),
-    exit: Subject(Nil),
-  )
-}
-
-pub fn new(
-  ui: Subject(Event),
-  input_sink: Subject(List(String)),
-  exit: Subject(Nil),
-) -> Result(Nil, String) {
-  // TODO start up mvp here, currently hi-jacking `naviterm`s socket
-  let socket_path = "/tmp/naviterm_mpv"
-
-  case tcp.connect(socket_path) {
-    Error(r) -> Error("Could not connect to mpv: " <> reason.to_string(r))
-    Ok(socket) -> {
-      // `inject_input` is created by name to allow the process that
-      // owns `read_input` to be able to register it, while the agent
-      // also have a reference to it to be able to inject input
-      let inject_input_name = process.new_name("inject_input")
-      let inject_input = process.named_subject(inject_input_name)
-
-      case
-        actor.new(State(socket, inject_input, ui, exit))
-        |> actor.on_message(handle_message)
-        |> actor.start
-      {
-        Error(start_error) ->
-          Error("Could not start actor: " <> string.inspect(start_error))
-        Ok(actor.Started(data:, ..)) -> {
-          echo "waiting for input"
-          key.start_raw_shell()
-
-          process.spawn(fn() {
-            let assert Ok(_) =
-              process.register(process.self(), inject_input_name)
-
-            read_input(data, inject_input, input_sink)
-          })
-
-          Ok(Nil)
-        }
-      }
-    }
-  }
-}
-
-fn handle_message(
-  state: State(socket, inject, ui, exit),
-  control: Control,
-) -> actor.Next(State(socket, inject, ui, exit), Control) {
-  case control {
-    control.Search -> {
-      echo "mpv search"
-      process.send(state.inject_input, key.Continue([key.input_introducer]))
-      process.send(state.ui, ui.Search)
-      actor.continue(state)
-    }
-    control.TogglePlayPause -> {
-      echo "toggling play/pause"
-
-      let _ =
-        result.map_error(control.toggle_play_pause(state.socket), fn(err) {
-          echo "Could not toggle play/pause: " <> err.details
-        })
-
-      let _ =
-        result.map(control.get_playback_time(state.socket), fn(playback) {
-          echo "playback: " <> float.to_string(playback.data)
-        })
-
-      actor.continue(state)
-    }
-    control.Exit -> {
-      process.send(state.exit, Nil)
-      actor.stop()
-    }
-  }
-}
-
-/// `read_input` operates by reading from input until a `Key` can be created.
-/// It is possible to create a `Key` without the users input by sending
-/// messages to `inject_input` which will initialize the "input to key" sequence.
-/// This is useful to ultimately create a `Control` without the user having to
-/// input all of the character(s) needed.
-fn read_input(
-  subject: Subject(Control),
-  inject_input: Subject(Key),
-  input_sink: Subject(List(String)),
-) -> Nil {
-  let buffer = case process.receive(inject_input, 1) {
-    Ok(key.Continue(buffer)) -> buffer
-    Ok(_) | Error(_) -> []
-  }
-
-  let _ =
-    key.read_input_until_key(buffer, input_sink)
-    |> control.from_key
-    |> result.map(process.send(subject, _))
-
-  read_input(subject, inject_input, input_sink)
-}

src/musicplayer.gleam

@@ -1,30 +1,41 @@
-import gleam/erlang/process
+import gleam/io
 
-import mpv/mpv
-import ui/ui
+import tcp/reason
+import tcp/tcp
 
 pub fn main() -> Nil {
-  // 1. user starts search
-  // ui should show "input: "
-  // user presses enter
-  // ui should show "input was: x"
+  let socket_path = "/tmp/musicplayer.sock"
 
-  // 1. listen for control.Search
-  // 2. start listening to tap_input and print io.print "input: "
-  // 3. simultaniously listen for control.Input
-  // 4. print "input was: x"
+  case tcp.connect(socket_path) {
+    Error(r) ->
+      io.println("Failed to connect to socket: " <> reason.to_string(r))
+    Ok(socket) -> {
+      io.println("connected")
 
-  // ui need: tap_input
-  // input need: ui subject to send control events from
+      let messages = ["hello, \n", "world!\n"]
 
-  // new input process should return `Key`
-  // this key should be sent both to ui and mpv, and they will decide if they can act on it.
-  // its probably ok if both act on it, e.g. "TogglePlayPause" could stop mpv music and display |> or || in ui
+      messages |> send_messages(socket, _)
 
-  let exit = process.new_subject()
-
-  let assert Ok(#(ui, input_sink)) = ui.new()
-  let assert Ok(_) = mpv.new(ui, input_sink, exit)
-
-  process.receive_forever(exit)
+      io.println("closing")
+      tcp.close(socket)
+    }
+  }
+}
+
+fn send_messages(socket: tcp.Socket, messages: List(String)) -> Nil {
+  case messages {
+    [] -> Nil
+    [message, ..rest] -> {
+      send_message(socket, message)
+      send_messages(socket, rest)
+    }
+  }
+}
+
+fn send_message(socket: tcp.Socket, message: String) -> Nil {
+  case tcp.send(socket, message) {
+    Error(r) ->
+      io.println("Failed to send message to socket: " <> reason.to_string(r))
+    Ok(_) -> io.println("Sent message to socket")
+  }
 }

src/tcp/tcp.gleam

@@ -1,6 +1,4 @@
-import gleam/bit_array
-import gleam/erlang/atom
-import gleam/result
+import gleam/bytes_tree
 
 import tcp/reason.{type Reason}
 
@@ -19,82 +17,25 @@ type ModeValue {
 type TCPOption {
   Active(Bool)
   Mode(ModeValue)
-  Reuseaddr(Bool)
-  Ifaddr(Local)
-  ExitOnClose(Bool)
-}
-
-pub fn listen(socket_path: String) -> Result(Socket, Reason) {
-  let options = [
-    Mode(Binary),
-    Active(False),
-    Reuseaddr(True),
-    Ifaddr(Local(socket_path)),
-    ExitOnClose(False),
-  ]
-  // port zero with `local` address
-  let port = 0
-
-  gen_tcp_listen(port, options)
-}
-
-pub fn accept(listen_socket: Socket) -> Result(Socket, Reason) {
-  gen_tcp_accept(listen_socket)
-}
-
-pub fn receive(socket: Socket, timeout: Int) -> Result(String, Reason) {
-  // Get all bytes
-  let length = 0
-
-  use bits <- result.try(gen_tcp_recv(socket, length, timeout))
-  case bits |> bit_array.to_string {
-    // TODO what error is best?
-    Error(_) -> Error(reason.Ebadmsg)
-    Ok(s) -> Ok(s)
-  }
 }
 
 pub fn connect(socket_path: String) -> Result(Socket, Reason) {
   let options = [Mode(Binary), Active(False)]
 
-  // port zero with `local` address
-  let port = 0
-
   // timeout in ms
   let timeout = 1000
 
-  gen_tcp_connect(Local(socket_path), port, options, timeout)
+  gen_tcp_connect(Local(socket_path), 0, options, timeout)
 }
 
 pub fn send(socket: Socket, message: String) -> Result(Nil, Reason) {
-  gen_tcp_send(socket, bit_array.from_string(message))
+  gen_tcp_send(socket, bytes_tree.from_string(message))
 }
 
 pub fn close(socket: Socket) -> Nil {
   gen_tcp_close(socket)
 }
 
-pub fn shutdown(socket: Socket) -> Result(Nil, Reason) {
-  let how = atom.create("write")
-  gen_tcp_shutdown(socket, how)
-}
-
-// https://www.erlang.org/doc/apps/kernel/gen_tcp.html#listen/2
-@external(erlang, "gen_tcp", "listen")
-fn gen_tcp_listen(port: Int, option: List(TCPOption)) -> Result(Socket, Reason)
-
-// https://www.erlang.org/doc/apps/kernel/gen_tcp.html#accept/1
-@external(erlang, "gen_tcp", "accept")
-fn gen_tcp_accept(listen_socket: Socket) -> Result(Socket, Reason)
-
-// https://www.erlang.org/doc/apps/kernel/gen_tcp.html#recv/3
-@external(erlang, "gen_tcp", "recv")
-fn gen_tcp_recv(
-  socket: Socket,
-  length: Int,
-  timeout: Int,
-) -> Result(BitArray, Reason)
-
 // https://www.erlang.org/doc/apps/kernel/gen_tcp.html#connect/4
 @external(erlang, "gen_tcp", "connect")
 fn gen_tcp_connect(
@@ -105,13 +46,12 @@ fn gen_tcp_connect(
 ) -> Result(Socket, Reason)
 
 // https://www.erlang.org/doc/apps/kernel/gen_tcp.html#send/2
-@external(erlang, "tcp_ffi", "send")
-fn gen_tcp_send(socket: Socket, packet: BitArray) -> Result(Nil, Reason)
+@external(erlang, "ipc_ffi", "send")
+fn gen_tcp_send(
+  socket: Socket,
+  packet: bytes_tree.BytesTree,
+) -> Result(Nil, Reason)
 
 // https://www.erlang.org/doc/apps/kernel/gen_tcp.html#close/1
 @external(erlang, "gen_tcp", "close")
 fn gen_tcp_close(socket: Socket) -> Nil
-
-// https://www.erlang.org/doc/apps/kernel/gen_tcp.html#shutdown/2
-@external(erlang, "tcp_ffi", "shutdown")
-fn gen_tcp_shutdown(socket: Socket, how: atom.Atom) -> Result(Nil, Reason)

src/tcp/tcp_ffi.erl

@@ -1,14 +1,8 @@
 -module(tcp_ffi).
--export([send/2, shutdown/2]).
+-export([send/2]).
 
 send(Socket, Packet) ->
   case gen_tcp:send(Socket, Packet) of
     ok -> {ok, nil};
     Res -> Res
   end.
-
-shutdown(Socket, How) ->
-  case gen_tcp:shutdown(Socket, How) of
-    ok -> {ok, nil};
-    Res -> Res
-  end.

src/ui/ui.gleam

@@ -1,62 +0,0 @@
-import gleam/erlang/process.{type Name, type Subject}
-import gleam/otp/actor
-import gleam/string
-
-pub type Event {
-  Search
-  Input(List(String))
-}
-
-// TODO in input, split input into events and control?
-
-pub fn new() -> Result(#(Subject(Event), Subject(List(String))), String) {
-  let input_sink_name: Name(List(String)) = process.new_name("input_sink")
-  let input_sink = process.named_subject(input_sink_name)
-
-  // let input_sink = process.new_subject()
-
-  case
-    actor.new(Nil)
-    |> actor.on_message(handle_message)
-    |> actor.start
-  {
-    Error(start_error) ->
-      Error("Could not start ui actor: " <> string.inspect(start_error))
-    Ok(actor.Started(data: ui, ..)) -> {
-      echo "ui started"
-
-      // let assert Ok(_) = process.register(process.self(), input_sink_name)
-      process.spawn(fn() {
-        let assert Ok(_) = process.register(process.self(), input_sink_name)
-        drain_input_sink(ui, input_sink)
-      })
-
-      Ok(#(ui, input_sink))
-    }
-  }
-}
-
-fn handle_message(state: Nil, event: Event) -> actor.Next(Nil, Event) {
-  case event {
-    Search -> {
-      echo "ui:search"
-      actor.continue(state)
-    }
-    Input(content) -> {
-      echo "ui:input: " <> string.inspect(content)
-      actor.continue(state)
-    }
-  }
-}
-
-fn drain_input_sink(
-  subject: Subject(Event),
-  input_sink: Subject(List(String)),
-) -> Nil {
-  echo "ui:drain_input_sink"
-  let content = process.receive_forever(input_sink)
-
-  process.send(subject, Input(content))
-
-  drain_input_sink(subject, input_sink)
-}

test/echo_server.gleam

@@ -1,81 +0,0 @@
-import gleam/erlang/process.{type Subject}
-import gleam/io
-import gleam/otp/actor
-import gleam/result
-import gleam/string
-
-import tcp/reason.{type Reason}
-import tcp/tcp
-
-pub type Message {
-  Shutdown
-  ReadyToAccept(subject: Subject(Message), listen_socket: tcp.Socket)
-}
-
-pub fn new(socket_path: String) -> Result(tcp.Socket, String) {
-  let server = actor.new(Nil) |> actor.on_message(handle_message) |> actor.start
-
-  case tcp.listen(socket_path), server {
-    Error(r), _ -> Error(reason.to_string(r))
-    _, Error(start_error) ->
-      case start_error {
-        actor.InitExited(_) -> Error("InitExited")
-        actor.InitFailed(_) -> Error("InitFailed")
-        actor.InitTimeout -> Error("InitTimeout")
-      }
-    Ok(listen_socket), Ok(b) -> {
-      let subject = b.data
-      actor.send(subject, ReadyToAccept(subject, listen_socket))
-      Ok(listen_socket)
-    }
-  }
-}
-
-fn handle_message(_: Nil, message: Message) -> actor.Next(Nil, Message) {
-  case message {
-    Shutdown -> actor.stop()
-
-    ReadyToAccept(subject, listen_socket) -> {
-      case tcp.accept(listen_socket) {
-        Error(r) ->
-          actor.stop_abnormal(
-            "Could not accept connection :" <> reason.to_string(r),
-          )
-        Ok(socket) -> {
-          case receive_from_connection(socket) {
-            Error(r) ->
-              io.println_error(
-                "Failed to receive from connection :" <> reason.to_string(r),
-              )
-            Ok(_) -> Nil
-          }
-
-          actor.send(subject, ReadyToAccept(subject, listen_socket))
-          actor.continue(Nil)
-        }
-      }
-    }
-  }
-}
-
-fn receive_from_connection(socket: tcp.Socket) -> Result(Nil, Reason) {
-  result.try(receive_until_closed(socket, ""), fn(data) {
-    let _ = tcp.send(socket, data)
-    tcp.close(socket)
-    Ok(Nil)
-  })
-}
-
-fn receive_until_closed(
-  socket: tcp.Socket,
-  result: String,
-) -> Result(String, Reason) {
-  case tcp.receive(socket, 10_000) {
-    Error(reason.Closed) -> Ok(result)
-    Error(err) -> Error(err)
-    Ok(data) -> {
-      let result = data |> string.append(result, _)
-      receive_until_closed(socket, result)
-    }
-  }
-}

test/input/input_test.gleam

@@ -1,42 +0,0 @@
-import gleam/list
-import gleeunit
-
-import input/key.{type Key, Char, csi, esc, input_introducer as ii}
-
-pub fn main() -> Nil {
-  gleeunit.main()
-}
-
-type TestCase {
-  TestCase(input: List(String), expected: Key)
-}
-
-pub fn key_from_list_test() {
-  let base_tests = [TestCase([], key.Continue([]))]
-
-  let char_tests = [TestCase(["c"], Char("c"))]
-
-  let escape_tests = [
-    TestCase([esc, csi], key.Continue([esc, csi])),
-    TestCase([esc], key.Continue([esc])),
-
-    TestCase([esc, csi, "D"], key.Left),
-    TestCase([esc, csi, "C"], key.Right),
-    TestCase([esc, csi, "A"], key.Up),
-    TestCase([esc, csi, "B"], key.Down),
-  ]
-
-  let input_tests = [
-    TestCase([ii], key.Continue([ii])),
-    TestCase([ii, "a"], key.Continue([ii, "a"])),
-    TestCase([ii, "a", "b"], key.Continue([ii, "ab"])),
-    TestCase([ii, "ab", "\u{007F}"], key.Continue([ii, "a"])),
-    TestCase([ii, "ab", "\r"], key.Input("ab")),
-  ]
-
-  let test_cases = [base_tests, char_tests, escape_tests, input_tests]
-
-  list.each(list.flatten(test_cases), fn(tc) {
-    assert tc.expected == key.from_list(tc.input)
-  })
-}

test/mpv/control_test.gleam

@@ -1,33 +0,0 @@
-import gleam/list
-import gleeunit
-
-import input/key.{type Key, Char}
-import mpv/control.{type Control}
-import mpv/internal/control as control_internal
-
-pub fn main() -> Nil {
-  gleeunit.main()
-}
-
-type TestCase {
-  TestCase(key: Key, expected: Result(Control, Nil))
-}
-
-pub fn control_from_key_test() {
-  let test_cases = [
-    TestCase(Char(" "), Ok(control.TogglePlayPause)),
-    TestCase(Char("q"), Ok(control.Exit)),
-  ]
-
-  list.each(test_cases, fn(tc) {
-    assert tc.expected == control.from_key(tc.key)
-  })
-}
-
-pub fn parse_playback_time_test() {
-  let json_string =
-    "{\"data\":\"123.456789\",\"request_id\":0,\"error\":\"success\"}\n"
-
-  let assert Ok(data) = control_internal.parse_playback_time(json_string)
-  assert data == 123.456789
-}

test/musicplayer_test.gleam

@@ -3,3 +3,11 @@ import gleeunit
 pub fn main() -> Nil {
   gleeunit.main()
 }
+
+// gleeunit test functions end in `_test`
+pub fn hello_world_test() {
+  let name = "Joe"
+  let greeting = "Hello, " <> name <> "!"
+
+  assert greeting == "Hello, Joe!"
+}

test/tcp/tcp_test.gleam

@@ -1,30 +0,0 @@
-import gleam/list
-import gleeunit
-import simplifile
-
-import echo_server
-import tcp/tcp
-
-pub fn main() -> Nil {
-  gleeunit.main()
-}
-
-pub fn tcp_send_shutdown_receive_test() {
-  let socket_path = "/tmp/musicplayer-test.sock"
-
-  let assert Ok(_) = echo_server.new(socket_path)
-  let assert Ok(socket) = tcp.connect(socket_path)
-
-  let messages = ["hello, ", "world!\n"]
-  list.each(messages, fn(message) {
-    let assert Ok(_) = tcp.send(socket, message)
-  })
-
-  let assert Ok(_) = tcp.shutdown(socket)
-
-  let timeout_ms = 100
-  assert Ok("hello, world!\n") == tcp.receive(socket, timeout_ms)
-
-  // TODO find better way to always do cleanup
-  simplifile.delete(socket_path)
-}