Speed up tests by caching cover data

Suggested and executed by Claude

test/music_library_web/controllers/cover_controller_test.exs

@@ -61,7 +61,7 @@ defmodule MusicLibraryWeb.CoverControllerTest do
     test "accepts a size attribute for resizing", %{conn: conn, record: record} do
       conn = get(conn, ~p"/covers/#{record.id}?size=480")
 
-      thumb = File.read!(marbles_thumb_fixture())
+      thumb = marbles_thumb_data()
       hash = Cover.hash(thumb)
 
       assert conn.status == 200

test/music_library_web/live/collection_live/index_test.exs

@@ -217,7 +217,7 @@ defmodule MusicLibraryWeb.CollectionLive.IndexTest do
     end
 
     test "can change the record cover", %{conn: conn} do
-      record = record(cover_data: File.read!(marbles_cover_fixture()))
+      record = record(cover_data: marbles_cover_data())
       cover_url = ~p"/covers/#{record.id}?vsn=#{record.cover_hash}"
 
       session =
@@ -258,7 +258,7 @@ defmodule MusicLibraryWeb.CollectionLive.IndexTest do
       release_group = release_group(:marbles)
       release_group_releases = release_group_releases(:marbles)
 
-      cover_data = File.read!(marbles_cover_fixture())
+      cover_data = marbles_cover_data()
 
       Req.Test.stub(MusicBrainz.API, fn conn ->
         case conn.path_info do
@@ -367,7 +367,7 @@ defmodule MusicLibraryWeb.CollectionLive.IndexTest do
     release_group_id = release_group["id"]
     release_group_releases = release_group_releases(:marbles)
 
-    cover_data = File.read!(marbles_cover_fixture())
+    cover_data = marbles_cover_data()
 
     Req.Test.stub(MusicBrainz.API, fn conn ->
       case conn.path_info do

test/music_library_web/live/stats_live/index_test.exs

@@ -211,7 +211,7 @@ defmodule MusicLibraryWeb.StatsLive.IndexTest do
       release_group_id = release_group_id(:mystery_of_time)
       release_group_releases = release_group_releases(:mystery_of_time)
 
-      cover_data = File.read!(marbles_cover_fixture())
+      cover_data = marbles_cover_data()
 
       Req.Test.stub(MusicBrainz.API, fn conn ->
         case conn.path_info do