Prepare to join servers

test/birdy_chat_web/api/messages_test.exs

@@ -1,10 +1,12 @@
 defmodule BirdyChatWeb.Api.MessagesTest do
-  use BirdyChatWeb.ConnCase
+  use BirdyChatWeb.ConnCase, async: true
+
+  import Phoenix.ChannelTest
 
   setup %{conn: conn} do
     url = ~p"/api/messages"
 
-    path = Application.app_dir(:birdy_chat, ["priv", "messages", "test-user.txt"])
+    path = Application.app_dir(:birdy_chat, ["priv", "messages", "test1-user.txt"])
     on_exit(fn -> File.rm(path) end)
 
     conn =
@@ -14,6 +16,45 @@ defmodule BirdyChatWeb.Api.MessagesTest do
     %{conn: conn, url: url}
   end
 
+  describe "POST /api/messages to other server" do
+    setup do
+      server_id = "test2"
+      token = Phoenix.Token.sign(BirdyChatWeb.Endpoint, "serverAuth", server_id)
+
+      {:ok, _, socket} =
+        BirdyChatWeb.ServerSocket
+        |> socket("server_socket", %{server_id: server_id})
+        |> subscribe_and_join(BirdyChatWeb.ServerChannel, "server:#{server_id}", %{token: token})
+
+      %{socket: socket}
+    end
+
+    test "returns error when a peer is unknown", %{conn: conn, url: url} do
+      message = %{from: "test1-user", to: "fake-user", message: "123"}
+
+      payload = Jason.encode!(message)
+      conn = post(conn, url, payload)
+      assert result = json_response(conn, :unprocessable_entity)
+
+      expected_result = %{"errors" => %{"to" => ["Unknown 'to' server"]}}
+
+      assert result == expected_result
+    end
+
+    test "broadcasts message to websocket", %{conn: conn, url: url} do
+      message = %{from: "test1-user", to: "test2-user", message: "123"}
+      string_message = %{"from" => "test1-user", "message" => "123", "to" => "test2-user"}
+
+      payload = Jason.encode!(message)
+      conn = post(conn, url, payload)
+      assert result = json_response(conn, :created)
+      assert result == string_message
+
+      assert_broadcast "new_message", {:binary, encoded_message}
+      assert :erlang.binary_to_term(encoded_message, [:safe]) == message
+    end
+  end
+
   describe "POST /api/messages" do
     test "returns errors for invalid message", %{conn: conn, url: url} do
       payload = Jason.encode!(%{})
@@ -32,7 +73,7 @@ defmodule BirdyChatWeb.Api.MessagesTest do
     end
 
     test "returns message and 201 when successful", %{conn: conn, url: url} do
-      message = %{"from" => "2-user", "to" => "1-user", "message" => "123"}
+      message = %{"from" => "test2-user", "to" => "test1-user", "message" => "123"}
       payload = Jason.encode!(message)
       conn = post(conn, url, payload)
       assert result = json_response(conn, :created)
@@ -40,30 +81,30 @@ defmodule BirdyChatWeb.Api.MessagesTest do
     end
 
     test "writes message to file", %{conn: conn, url: url} do
-      message = %{"from" => "2-user", "to" => "test-user", "message" => "123"}
+      message = %{"from" => "test2-user", "to" => "test1-user", "message" => "123"}
       payload = Jason.encode!(message)
       conn = post(conn, url, payload)
       assert result = json_response(conn, :created)
       assert result == message
 
-      path = Application.app_dir(:birdy_chat, ["priv", "messages", "test-user.txt"])
+      path = Application.app_dir(:birdy_chat, ["priv", "messages", "test1-user.txt"])
       contents = File.read!(path)
-      assert contents == "2-user: 123\n"
+      assert contents == "test2-user: 123\n"
     end
 
     test "appends message to file", %{conn: conn, url: url} do
-      message = %{"from" => "2-user", "to" => "test-user", "message" => "123"}
+      message = %{"from" => "test2-user", "to" => "test1-user", "message" => "123"}
       payload = Jason.encode!(message)
       post(conn, url, payload)
 
-      message = %{"from" => "2-user", "to" => "test-user", "message" => "456"}
+      message = %{"from" => "test2-user", "to" => "test1-user", "message" => "456"}
       payload = Jason.encode!(message)
       conn = post(conn, url, payload)
       assert json_response(conn, :created)
 
-      path = Application.app_dir(:birdy_chat, ["priv", "messages", "test-user.txt"])
+      path = Application.app_dir(:birdy_chat, ["priv", "messages", "test1-user.txt"])
       contents = File.read!(path)
-      assert contents == "2-user: 123\n2-user: 456\n"
+      assert contents == "test2-user: 123\ntest2-user: 456\n"
     end
   end
 end