fix: podcast fixtures

lib/radiator/podcast.ex

@@ -22,6 +22,22 @@ defmodule Radiator.Podcast do
     Repo.all(Network)
   end
 
+  @doc """
+  Returns the list of networks with preloaded associations.
+
+  ## Examples
+
+      iex> list_networks(preload: :shows)
+      [%Network{}, ...]
+
+  """
+
+  def list_networks(preload: preload) do
+    Network
+    |> Repo.all()
+    |> Repo.preload(preload)
+  end
+
   @doc """
   Gets a single network.
 
@@ -132,6 +148,27 @@ defmodule Radiator.Podcast do
   """
   def get_show!(id), do: Repo.get!(Show, id)
 
+  @doc """
+  Gets a single show with preloaded associations.
+
+  Raises `Ecto.NoResultsError` if the Show does not exist.
+
+  ## Examples
+
+      iex> get_show!(123, preload: :episodes)
+      %Show{}
+
+      iex> get_show!(456, preload: :episodes)
+      ** (Ecto.NoResultsError)
+
+  """
+
+  def get_show!(id, preload: preload) do
+    Show
+    |> Repo.get!(id)
+    |> Repo.preload(preload)
+  end
+
   @doc """
   Creates a show.
 

lib/radiator/podcast/episode.ex

@@ -11,7 +11,9 @@ defmodule Radiator.Podcast.Episode do
   schema "episodes" do
     field :title, :string
     field :number, :integer
+
     belongs_to :show, Show
+
     timestamps(type: :utc_datetime)
   end
 

lib/radiator/podcast/network.ex

@@ -12,6 +12,7 @@ defmodule Radiator.Podcast.Network do
     field :title, :string
 
     has_many(:shows, Show)
+
     timestamps(type: :utc_datetime)
   end
 

lib/radiator/podcast/show.ex

@@ -9,8 +9,11 @@ defmodule Radiator.Podcast.Show do
 
   schema "shows" do
     field :title, :string
+
     belongs_to :network, Network
+
     has_many(:episodes, Episode)
+
     timestamps(type: :utc_datetime)
   end
 

test/radiator/podcast_test.exs

@@ -14,6 +14,13 @@ defmodule Radiator.PodcastTest do
       assert Podcast.list_networks() == [network]
     end
 
+    test "list_networks/1 returns all networks with preloaded shows" do
+      show = show_fixture()
+
+      assert [%Network{shows: shows}] = Podcast.list_networks(preload: :shows)
+      assert shows == [show]
+    end
+
     test "get_network!/1 returns the network with given id" do
       network = network_fixture()
       assert Podcast.get_network!(network.id) == network
@@ -57,7 +64,7 @@ defmodule Radiator.PodcastTest do
   end
 
   describe "shows" do
-    @invalid_attrs %{title: nil, hostname: nil}
+    @invalid_attrs %{title: nil}
 
     test "list_shows/0 returns all shows" do
       show = show_fixture()
@@ -69,6 +76,14 @@ defmodule Radiator.PodcastTest do
       assert Podcast.get_show!(show.id) == show
     end
 
+    test "get_show!/2 returns the show with preloaded episodes" do
+      show = show_fixture()
+      episode = episode_fixture(%{show_id: show.id})
+
+      assert %Show{episodes: episodes} = Podcast.get_show!(show.id, preload: :episodes)
+      assert episodes == [episode]
+    end
+
     test "create_show/1 with valid data creates a show" do
       network = network_fixture()
       valid_attrs = %{title: "some title", network_id: network.id}

test/support/fixtures/podcast_fixtures.ex

@@ -23,14 +23,13 @@ defmodule Radiator.PodcastFixtures do
   Generate a show.
   """
   def show_fixture(attrs \\ %{}) do
-    network = network_fixture()
+    network = get_network(attrs)
 
     {:ok, show} =
       attrs
       |> Enum.into(%{
-        hostname: "some hostname",
         title: "some title",
-        network: network
+        network_id: network.id
       })
       |> Podcast.create_show()
 
@@ -41,7 +40,7 @@ defmodule Radiator.PodcastFixtures do
   Generate a episode.
   """
   def episode_fixture(attrs \\ %{}) do
-    show = show_fixture()
+    show = get_show(attrs)
 
     {:ok, episode} =
       attrs
@@ -53,4 +52,10 @@ defmodule Radiator.PodcastFixtures do
 
     episode
   end
+
+  defp get_network(%{network_id: id}), do: Podcast.get_network!(id)
+  defp get_network(_), do: network_fixture()
+
+  defp get_show(%{show_id: id}), do: Podcast.get_show!(id)
+  defp get_show(_), do: show_fixture()
 end