Add tests for Poll helper methods

lib/nostrum/struct/message/poll.ex

@@ -1,6 +1,8 @@
 defmodule Nostrum.Struct.Message.Poll do
   @moduledoc """
   Struct representing a poll object in a Discord chat.
+
+  There are various helper methods on this structure to create new poll, see `create_poll/2` and `put_answer/2` & `put_answer/3` for code samples.
   """
 
   alias Nostrum.Util

test/nostrum/struct/message/poll_test.exs

@@ -0,0 +1,40 @@
+defmodule Nostrum.Struct.Message.PollTest do
+  use ExUnit.Case, async: true
+
+  alias Nostrum.Struct.Message.Poll
+
+  doctest Poll
+
+  test "Poll.create_poll/2" do
+    assert Poll.create_poll("Craigs Cats!", duration: 1, allow_multiselect: true) ==
+             %Nostrum.Struct.Message.Poll{
+               question: %Nostrum.Struct.Message.Poll.MediaObject{
+                 text: "Craigs Cats!",
+                 emoji: nil
+               },
+               answers: [],
+               expiry: nil,
+               duration: 1,
+               allow_multiselect: true,
+               layout_type: 1,
+               results: nil
+             }
+  end
+
+  test "Poll.put_answer/2" do
+    poll =
+      Poll.create_poll("Craigs Cats!", duration: 1, allow_multiselect: true)
+      |> Poll.put_answer("Yes!")
+
+    assert Enum.at(poll.answers, 0).poll_media.text == "Yes!"
+  end
+
+  test "Poll.put_answer/3" do
+    poll =
+      Poll.create_poll("Craigs Cats!", duration: 1, allow_multiselect: true)
+      |> Poll.put_answer("Yes!", custom_emoji: 112_233_445_566_778_899)
+
+    assert Enum.at(poll.answers, 0).poll_media.text == "Yes!"
+    assert Enum.at(poll.answers, 0).poll_media.emoji.id == 112_233_445_566_778_899
+  end
+end