Show artists for latest record

test/music_library_web/controllers/stats_controller_test.exs

@@ -0,0 +1,44 @@
+defmodule MusicLibraryWeb.StatsControllerTest do
+  use MusicLibraryWeb.ConnCase
+
+  import MusicLibrary.RecordsFixtures
+
+  defp create_records(_) do
+    records = Enum.map(1..30, fn _ -> record_fixture() end)
+    %{records: records}
+  end
+
+  defp escape(string) do
+    string
+    |> Phoenix.HTML.html_escape()
+    |> Phoenix.HTML.safe_to_string()
+  end
+
+  describe "GET /" do
+    setup [:create_records]
+
+    test "it shows the record count (total and by format)", %{conn: conn, records: records} do
+      conn = get(conn, "/")
+
+      assert html_response(conn, 200) =~ records |> length() |> Integer.to_string()
+
+      records
+      |> Enum.frequencies_by(& &1.format)
+      |> Enum.each(fn {format, count} ->
+        assert html_response(conn, 200) =~ "#{count} #{format}"
+      end)
+    end
+
+    test "it shows the latest record", %{conn: conn, records: records} do
+      latest_record = Enum.max_by(records, & &1.inserted_at)
+
+      conn = get(conn, "/")
+
+      assert html_response(conn, 200) =~ escape(latest_record.title)
+
+      for artist <- latest_record.artists do
+        assert html_response(conn, 200) =~ escape(artist["name"])
+      end
+    end
+  end
+end