Extract LastFm module

test/last_fm_test.exs

@@ -0,0 +1,23 @@
+defmodule LastFmTest do
+  use ExUnit.Case, async: true
+
+  alias LastFm.APIMock
+  alias LastFm.Fixtures.Artist
+  import Mox
+
+  setup :verify_on_exit!
+
+  describe "get_artist_info/1" do
+    test "it returns the artist info" do
+      name = "Steven Wilson"
+      musicbrainz_id = Ecto.UUID.generate()
+      expected_info = Artist.get_info()
+
+      expect(APIMock, :get_artist_info, fn {:musicbrainz_id, ^musicbrainz_id}, _config ->
+        {:ok, expected_info}
+      end)
+
+      assert {:ok, expected_info} == LastFm.get_artist_info(musicbrainz_id, name)
+    end
+  end
+end