Extract Artists context

test/music_library/artists_test.exs

@@ -0,0 +1,17 @@
+defmodule MusicLibrary.ArtistsTest do
+  use MusicLibrary.DataCase
+
+  alias MusicLibrary.Artists
+  import MusicLibrary.RecordsFixtures
+
+  describe "get_artist/1" do
+    test "it returns records with essential data" do
+      record = record_fixture()
+      [expected] = record.artists
+
+      artist = Artists.get_artist!(expected.musicbrainz_id)
+
+      assert expected == artist
+    end
+  end
+end