Added Messages.add_part test for channel

test/lib/code_corps/messages/messages_test.exs

@@ -2,6 +2,7 @@ defmodule CodeCorps.MessagesTest do
   @moduledoc false
 
   use CodeCorps.DbAccessCase
+  use Phoenix.ChannelTest
 
   import Ecto.Query, only: [where: 2]
 
@@ -327,6 +328,21 @@ defmodule CodeCorps.MessagesTest do
       assert conversation_part.body == "Test body"
       assert conversation_part.conversation_id == conversation.id
     end
+
+    test "broadcasts event on phoenix channel" do
+      conversation = insert(:conversation)
+      user = insert(:user)
+      attrs = %{
+        author_id: user.id,
+        body: "Test body",
+        conversation_id: conversation.id
+      }
+
+      CodeCorpsWeb.Endpoint.subscribe("conversation:#{conversation.id}")
+      {:ok, %ConversationPart{id: id}} = Messages.add_part(attrs)
+      assert_broadcast("new:conversation-part", %{id: ^id})
+      CodeCorpsWeb.Endpoint.unsubscribe("conversation:#{conversation.id}")
+    end
   end
 
   describe "create/1" do