Question

我正在使用Docker容器中的Phoenix框架开发一个Web应用程序。以下是dockerfile中有关如何安装phoenix的相关行：

RUN git clone https://github.com/phoenixframework/phoenix
RUN cd /home/user/phoenix/installer/ && MIX_ENV=prod mix do archive.build, archive.install --force

一切正常。我可以使用以下命令生成一个新的凤凰项目：

mix phx.new hello_phoenix

然而，当我使用以下内容生成新频道时

混合phx.gen.channel hello_channel

并将此行添加到用户套接字文件

channel "hello_channel:lobby", HelloPhoenixWeb.HelloChannelChannel

然后运行

mix test

我收到以下错误：

warning: Phoenix.ChannelTest.socket/2 is deprecated, please call socket/3 instead
  (phoenix) lib/phoenix/test/channel_test.ex:234: Phoenix.ChannelTest."MACRO-socket"/3
  (elixir) src/elixir_dispatch.erl:186: :elixir_dispatch.expand_macro_fun/6
  (elixir) src/elixir_dispatch.erl:149: :elixir_dispatch.do_expand_import/6
  (elixir) src/elixir_dispatch.erl:81: :elixir_dispatch.dispatch_import/5
  (elixir) src/elixir_expand.erl:539: :elixir_expand.expand_arg/2
  (stdlib) lists.erl:1354: :lists.mapfoldl/3
  (elixir) src/elixir_expand.erl:548: :elixir_expand.expand_args/2
  (elixir) src/elixir_expand.erl:646: :elixir_expand.expand_remote/7
  (elixir) src/elixir_dispatch.erl:207: :elixir_dispatch.expand_quoted/6
  (elixir) src/elixir_expand.erl:10: :elixir_expand.expand/2
  (elixir) src/elixir_expand.erl:489: :elixir_expand.expand_block/4
  (elixir) src/elixir_expand.erl:39: :elixir_expand.expand/2
  (elixir) src/elixir_clauses.erl:19: :elixir_clauses.def/2
  (elixir) src/elixir_def.erl:146: :elixir_def."-store_definition/10-lc$^0/1-0-"/2
  (elixir) src/elixir_def.erl:146: :elixir_def.store_definition/10
  test/hello_phoenix_web/channels/hello_channel_channel_test.exs:6: (module)
  (elixir) src/elixir_compiler.erl:85: :elixir_compiler.dispatch/6

..
== Compilation error in file test/hello_phoenix_web/channels/hello_channel_channel_test.exs ==
** (CaseClauseError) no case clause matching: [{"/socket", HelloPhoenixWeb.UserSocket, [], [{["socket", "websocket"], {:websocket, HelloPhoenixWeb.UserSocket, [serializer: [{Phoenix.Socket.V1.JSONSerializer, "~> 1.0.0"}, {Phoenix.Socket.V2.JSONSerializer, "~> 2.0.0"}], timeout: 60000, transport_log: false, compress: false]}}]}]
    (phoenix) lib/phoenix/test/channel_test.ex:240: Phoenix.ChannelTest.first_socket!/1
    (phoenix) lib/phoenix/test/channel_test.ex:213: Phoenix.ChannelTest.build_socket/4
    (phoenix) expanding macro: Phoenix.ChannelTest.socket/2
    test/hello_phoenix_web/channels/hello_channel_channel_test.exs:8: HelloPhoenixWeb.HelloChannelChannelTest.__ex_unit_setup_1/1
    (elixir) expanding macro: Kernel.|>/2
    test/hello_phoenix_web/channels/hello_channel_channel_test.exs:9: HelloPhoenixWeb.HelloChannelChannelTest.__ex_unit_setup_1/1
    (elixir) lib/code.ex:677: Code.require_file/2
    (elixir) lib/kernel/parallel_compiler.ex:201: anonymous fn/4 in Kernel.ParallelCompiler.spawn_workers/6

这里是mix phx.gen.channel任务生成的频道文件的代码：

defmodule HelloPhoenixWeb.HelloChannelChannel do
  use HelloPhoenixWeb, :channel

  def join("hello_channel:lobby", payload, socket) do
    if authorized?(payload) do
      {:ok, socket}
    else
      {:error, %{reason: "unauthorized"}}
    end
  end

  # Channels can be used in a request/response fashion
  # by sending replies to requests from the client
  def handle_in("ping", payload, socket) do
    {:reply, {:ok, payload}, socket}
  end

  # It is also common to receive messages from the client and
  # broadcast to everyone in the current topic (hello_channel:lobby).
  def handle_in("shout", payload, socket) do
    broadcast socket, "shout", payload
    {:noreply, socket}
  end

  # Add authorization logic here as required.
  defp authorized?(_payload) do
    true
  end
end

此处还生成了测试代码：

defmodule HelloPhoenixWeb.HelloChannelChannelTest do
  use HelloPhoenixWeb.ChannelCase

  alias HelloPhoenixWeb.HelloChannelChannel

  setup do
    {:ok, _, socket} =
      socket("user_id", %{some: :assign})
      |> subscribe_and_join(HelloChannelChannel, "hello_channel:lobby")

    {:ok, socket: socket}
  end

  test "ping replies with status ok", %{socket: socket} do
    ref = push socket, "ping", %{"hello" => "there"}
    assert_reply ref, :ok, %{"hello" => "there"}
  end

  test "shout broadcasts to hello_channel:lobby", %{socket: socket} do
    push socket, "shout", %{"hello" => "all"}
    assert_broadcast "shout", %{"hello" => "all"}
  end

  test "broadcasts are pushed to the client", %{socket: socket} do
    broadcast_from! socket, "broadcast", %{"some" => "data"}
    assert_push "broadcast", %{"some" => "data"}
  end
end

我遇到了一个我正在处理的实际项目的问题，以及我为了隔离问题而调整的测试项目。

生成器所做的测试导致编译错误的原因是什么？

Answer 1

Phoenix框架1.4仍处于开发状态，因此错误几乎不足为奇。 Phoenix框架1.3.x是当前稳定的版本，您应该使用它。而且，如果您知道1.4-dev构建的工作方式，那么应该在Phoenix Framework github存储库上提出一个问题。

Phoenix 1.4.0-dev生成的通道测试失败，编译错误

1 个答案: