diff --git a/lib/pinchflat/downloading/media_downloader.ex b/lib/pinchflat/downloading/media_downloader.ex
index 249752c..22c1370 100644
--- a/lib/pinchflat/downloading/media_downloader.ex
+++ b/lib/pinchflat/downloading/media_downloader.ex
@@ -152,7 +152,7 @@ defmodule Pinchflat.Downloading.MediaDownloader do
 
   defp download_with_options(url, item_with_preloads, output_filepath, override_opts) do
     {:ok, options} = DownloadOptionBuilder.build(item_with_preloads, override_opts)
-    # TODO: test
+
     use_cookies = Sources.use_cookies?(item_with_preloads.source, :downloading)
     runner_opts = [output_filepath: output_filepath, use_cookies: use_cookies]
 
diff --git a/lib/pinchflat/fast_indexing/fast_indexing_helpers.ex b/lib/pinchflat/fast_indexing/fast_indexing_helpers.ex
index bda355e..15a4342 100644
--- a/lib/pinchflat/fast_indexing/fast_indexing_helpers.ex
+++ b/lib/pinchflat/fast_indexing/fast_indexing_helpers.ex
@@ -89,13 +89,15 @@ defmodule Pinchflat.FastIndexing.FastIndexingHelpers do
 
   defp create_media_item_from_media_id(source, media_id) do
     url = "https://www.youtube.com/watch?v=#{media_id}"
+    # This is set to :metadata instead of :indexing since this happens _after_ the
+    # actual indexing process. In reality, slow indexing is the only thing that
+    # should be using :indexing.
     should_use_cookies = Sources.use_cookies?(source, :metadata)
 
     command_opts =
       [output: DownloadOptionBuilder.build_output_path_for(source)] ++
         DownloadOptionBuilder.build_quality_options_for(source)
 
-    # TODO: test
     case YtDlpMedia.get_media_attributes(url, command_opts, use_cookies: should_use_cookies) do
       {:ok, media_attrs} ->
         Media.create_media_item_from_backend_attrs(source, media_attrs)
diff --git a/lib/pinchflat/metadata/metadata_file_helpers.ex b/lib/pinchflat/metadata/metadata_file_helpers.ex
index bb8e4ea..842f6ef 100644
--- a/lib/pinchflat/metadata/metadata_file_helpers.ex
+++ b/lib/pinchflat/metadata/metadata_file_helpers.ex
@@ -67,7 +67,6 @@ defmodule Pinchflat.Metadata.MetadataFileHelpers do
     yt_dlp_filepath = generate_filepath_for(media_item_with_preloads, "thumbnail.%(ext)s")
     real_filepath = generate_filepath_for(media_item_with_preloads, "thumbnail.jpg")
     command_opts = [output: yt_dlp_filepath]
-    # TODO: test
     addl_opts = [use_cookies: Sources.use_cookies?(media_item_with_preloads.source, :metadata)]
 
     case YtDlpMedia.download_thumbnail(media_item_with_preloads.original_url, command_opts, addl_opts) do
diff --git a/lib/pinchflat/metadata/source_metadata_storage_worker.ex b/lib/pinchflat/metadata/source_metadata_storage_worker.ex
index adaae95..feb793b 100644
--- a/lib/pinchflat/metadata/source_metadata_storage_worker.ex
+++ b/lib/pinchflat/metadata/source_metadata_storage_worker.ex
@@ -113,7 +113,6 @@ defmodule Pinchflat.Metadata.SourceMetadataStorageWorker do
   defp fetch_metadata_for_source(source) do
     tmp_output_path = "#{tmp_directory()}/#{StringUtils.random_string(16)}/source_image.%(ext)S"
     base_opts = [convert_thumbnails: "jpg", output: tmp_output_path]
-    # TODO: test
     should_use_cookies = Sources.use_cookies?(source, :metadata)
 
     opts =
@@ -123,7 +122,6 @@ defmodule Pinchflat.Metadata.SourceMetadataStorageWorker do
         base_opts ++ [:write_thumbnail, playlist_items: 1]
       end
 
-    # TODO: test
     MediaCollection.get_source_metadata(source.original_url, opts, use_cookies: should_use_cookies)
   end
 
diff --git a/lib/pinchflat/slow_indexing/slow_indexing_helpers.ex b/lib/pinchflat/slow_indexing/slow_indexing_helpers.ex
index 3b24b3e..8721b21 100644
--- a/lib/pinchflat/slow_indexing/slow_indexing_helpers.ex
+++ b/lib/pinchflat/slow_indexing/slow_indexing_helpers.ex
@@ -132,7 +132,6 @@ defmodule Pinchflat.SlowIndexing.SlowIndexingHelpers do
     {:ok, pid} = FileFollowerServer.start_link()
 
     handler = fn filepath -> setup_file_follower_watcher(pid, filepath, source) end
-    # TODO: test
     should_use_cookies = Sources.use_cookies?(source, :indexing)
 
     command_opts =
diff --git a/lib/pinchflat/sources/source.ex b/lib/pinchflat/sources/source.ex
index d595ef0..aa4966a 100644
--- a/lib/pinchflat/sources/source.ex
+++ b/lib/pinchflat/sources/source.ex
@@ -78,6 +78,7 @@ defmodule Pinchflat.Sources.Source do
     field :collection_type, Ecto.Enum, values: [:channel, :playlist]
     field :index_frequency_minutes, :integer, default: 60 * 24
     field :fast_index, :boolean, default: false
+    # TODO: consider renaming `indexing_only` to something like `when_needed` (but better)
     field :cookie_behaviour, Ecto.Enum, values: [:disabled, :indexing_only, :all_operations], default: :disabled
     field :download_media, :boolean, default: true
     field :last_indexed_at, :utc_datetime
diff --git a/lib/pinchflat/sources/sources.ex b/lib/pinchflat/sources/sources.ex
index a0f1313..40c0ad0 100644
--- a/lib/pinchflat/sources/sources.ex
+++ b/lib/pinchflat/sources/sources.ex
@@ -32,7 +32,11 @@ defmodule Pinchflat.Sources do
     source.output_path_template_override || media_profile.output_path_template
   end
 
-  # TODO: test
+  @doc """
+  Returns a boolean indicating whether or not cookies should be used for a given operation.
+
+  Returns boolean()
+  """
   def use_cookies?(source, operation) when operation in [:indexing, :downloading, :metadata] do
     case source.cookie_behaviour do
       :disabled -> false
@@ -190,7 +194,6 @@ defmodule Pinchflat.Sources do
 
   defp add_source_details_to_changeset(source, changeset) do
     original_url = changeset.changes.original_url
-    # TODO: test
     should_use_cookies = Ecto.Changeset.get_field(changeset, :cookie_behaviour) == :all_operations
     # Skipping sleep interval since this is UI blocking and we want to keep this as fast as possible
     addl_opts = [use_cookies: should_use_cookies, skip_sleep_interval: true]
diff --git a/test/pinchflat/downloading/media_downloader_test.exs b/test/pinchflat/downloading/media_downloader_test.exs
index 5bda8cc..a2b9a9d 100644
--- a/test/pinchflat/downloading/media_downloader_test.exs
+++ b/test/pinchflat/downloading/media_downloader_test.exs
@@ -157,15 +157,16 @@ defmodule Pinchflat.Downloading.MediaDownloaderTest do
           {:ok, ""}
       end)
 
-      source = source_fixture(%{use_cookies: true})
+      source = source_fixture(%{cookie_behaviour: :all_operations})
       media_item = media_item_fixture(%{source_id: source.id})
 
       assert {:ok, _} = MediaDownloader.download_for_media_item(media_item)
     end
 
-    test "does not set use_cookies if the source does not use cookies" do
+    test "does not set use_cookies if the source only uses cookies when indexing" do
       expect(YtDlpRunnerMock, :run, 3, fn
-        _url, :get_downloadable_status, _opts, _ot, _addl ->
+        _url, :get_downloadable_status, _opts, _ot, addl ->
+          assert {:use_cookies, false} in addl
           {:ok, "{}"}
 
         _url, :download, _opts, _ot, addl ->
@@ -176,7 +177,27 @@ defmodule Pinchflat.Downloading.MediaDownloaderTest do
           {:ok, ""}
       end)
 
-      source = source_fixture(%{use_cookies: false})
+      source = source_fixture(%{cookie_behaviour: :indexing_only})
+      media_item = media_item_fixture(%{source_id: source.id})
+
+      assert {:ok, _} = MediaDownloader.download_for_media_item(media_item)
+    end
+
+    test "does not set use_cookies if the source does not use cookies" do
+      expect(YtDlpRunnerMock, :run, 3, fn
+        _url, :get_downloadable_status, _opts, _ot, addl ->
+          assert {:use_cookies, false} in addl
+          {:ok, "{}"}
+
+        _url, :download, _opts, _ot, addl ->
+          assert {:use_cookies, false} in addl
+          {:ok, render_metadata(:media_metadata)}
+
+        _url, :download_thumbnail, _opts, _ot, _addl ->
+          {:ok, ""}
+      end)
+
+      source = source_fixture(%{cookie_behaviour: :disabled})
       media_item = media_item_fixture(%{source_id: source.id})
 
       assert {:ok, _} = MediaDownloader.download_for_media_item(media_item)
diff --git a/test/pinchflat/fast_indexing/fast_indexing_helpers_test.exs b/test/pinchflat/fast_indexing/fast_indexing_helpers_test.exs
index a798275..0cfcb77 100644
--- a/test/pinchflat/fast_indexing/fast_indexing_helpers_test.exs
+++ b/test/pinchflat/fast_indexing/fast_indexing_helpers_test.exs
@@ -104,34 +104,6 @@ defmodule Pinchflat.FastIndexing.FastIndexingHelpersTest do
       FastIndexingHelpers.index_and_kickoff_downloads(source)
     end
 
-    test "sets use_cookies if the source uses cookies" do
-      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
-
-      stub(YtDlpRunnerMock, :run, fn _url, :get_media_attributes, _opts, _ot, addl ->
-        assert {:use_cookies, true} in addl
-
-        {:ok, media_attributes_return_fixture()}
-      end)
-
-      source = source_fixture(%{use_cookies: true})
-
-      assert [%MediaItem{}] = FastIndexingHelpers.index_and_kickoff_downloads(source)
-    end
-
-    test "does not set use_cookies if the source does not use cookies" do
-      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
-
-      stub(YtDlpRunnerMock, :run, fn _url, :get_media_attributes, _opts, _ot, addl ->
-        assert {:use_cookies, false} in addl
-
-        {:ok, media_attributes_return_fixture()}
-      end)
-
-      source = source_fixture(%{use_cookies: false})
-
-      assert [%MediaItem{}] = FastIndexingHelpers.index_and_kickoff_downloads(source)
-    end
-
     test "does not enqueue a download job if the media item does not match the format rules" do
       expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
 
@@ -180,6 +152,50 @@ defmodule Pinchflat.FastIndexing.FastIndexingHelpersTest do
     end
   end
 
+  describe "index_and_kickoff_downloads/1 when testing cookies" do
+    test "sets use_cookies if the source uses cookies" do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
+
+      stub(YtDlpRunnerMock, :run, fn _url, :get_media_attributes, _opts, _ot, addl ->
+        assert {:use_cookies, true} in addl
+
+        {:ok, media_attributes_return_fixture()}
+      end)
+
+      source = source_fixture(%{cookie_behaviour: :all_operations})
+
+      assert [%MediaItem{}] = FastIndexingHelpers.index_and_kickoff_downloads(source)
+    end
+
+    test "does not set use_cookies if the source only uses cookies when indexing" do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
+
+      stub(YtDlpRunnerMock, :run, fn _url, :get_media_attributes, _opts, _ot, addl ->
+        assert {:use_cookies, false} in addl
+
+        {:ok, media_attributes_return_fixture()}
+      end)
+
+      source = source_fixture(%{cookie_behaviour: :indexing_only})
+
+      assert [%MediaItem{}] = FastIndexingHelpers.index_and_kickoff_downloads(source)
+    end
+
+    test "does not set use_cookies if the source does not use cookies" do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, "<yt:videoId>test_1</yt:videoId>"} end)
+
+      stub(YtDlpRunnerMock, :run, fn _url, :get_media_attributes, _opts, _ot, addl ->
+        assert {:use_cookies, false} in addl
+
+        {:ok, media_attributes_return_fixture()}
+      end)
+
+      source = source_fixture(%{cookie_behaviour: :disabled})
+
+      assert [%MediaItem{}] = FastIndexingHelpers.index_and_kickoff_downloads(source)
+    end
+  end
+
   describe "index_and_kickoff_downloads/1 when testing backends" do
     test "uses the YouTube API if it is enabled", %{source: source} do
       expect(HTTPClientMock, :get, fn url, _headers ->
diff --git a/test/pinchflat/metadata/metadata_file_helpers_test.exs b/test/pinchflat/metadata/metadata_file_helpers_test.exs
index b193d9a..1b4961b 100644
--- a/test/pinchflat/metadata/metadata_file_helpers_test.exs
+++ b/test/pinchflat/metadata/metadata_file_helpers_test.exs
@@ -88,13 +88,35 @@ defmodule Pinchflat.Metadata.MetadataFileHelpersTest do
       Helpers.download_and_store_thumbnail_for(media_item)
     end
 
+    test "returns nil if yt-dlp fails", %{media_item: media_item} do
+      stub(YtDlpRunnerMock, :run, fn _url, :download_thumbnail, _opts, _ot, _addl -> {:error, "error"} end)
+
+      filepath = Helpers.download_and_store_thumbnail_for(media_item)
+
+      assert filepath == nil
+    end
+  end
+
+  describe "download_and_store_thumbnail_for/2 when testing cookie usage" do
     test "sets use_cookies if the source uses cookies" do
       expect(YtDlpRunnerMock, :run, fn _url, :download_thumbnail, _opts, _ot, addl ->
         assert {:use_cookies, true} in addl
         {:ok, ""}
       end)
 
-      source = source_fixture(%{use_cookies: true})
+      source = source_fixture(%{cookie_behaviour: :all_operations})
+      media_item = Repo.preload(media_item_fixture(%{source_id: source.id}), :source)
+
+      Helpers.download_and_store_thumbnail_for(media_item)
+    end
+
+    test "does not set use_cookies if the source only uses cookies when indexing" do
+      expect(YtDlpRunnerMock, :run, fn _url, :download_thumbnail, _opts, _ot, addl ->
+        assert {:use_cookies, false} in addl
+        {:ok, ""}
+      end)
+
+      source = source_fixture(%{cookie_behaviour: :indexing_only})
       media_item = Repo.preload(media_item_fixture(%{source_id: source.id}), :source)
 
       Helpers.download_and_store_thumbnail_for(media_item)
@@ -106,19 +128,11 @@ defmodule Pinchflat.Metadata.MetadataFileHelpersTest do
         {:ok, ""}
       end)
 
-      source = source_fixture(%{use_cookies: false})
+      source = source_fixture(%{cookie_behaviour: :disabled})
       media_item = Repo.preload(media_item_fixture(%{source_id: source.id}), :source)
 
       Helpers.download_and_store_thumbnail_for(media_item)
     end
-
-    test "returns nil if yt-dlp fails", %{media_item: media_item} do
-      stub(YtDlpRunnerMock, :run, fn _url, :download_thumbnail, _opts, _ot, _addl -> {:error, "error"} end)
-
-      filepath = Helpers.download_and_store_thumbnail_for(media_item)
-
-      assert filepath == nil
-    end
   end
 
   describe "parse_upload_date/1" do
diff --git a/test/pinchflat/metadata/source_metadata_storage_worker_test.exs b/test/pinchflat/metadata/source_metadata_storage_worker_test.exs
index 2b08a2f..e363e65 100644
--- a/test/pinchflat/metadata/source_metadata_storage_worker_test.exs
+++ b/test/pinchflat/metadata/source_metadata_storage_worker_test.exs
@@ -254,7 +254,23 @@ defmodule Pinchflat.Metadata.SourceMetadataStorageWorkerTest do
       end)
 
       profile = media_profile_fixture(%{download_source_images: true})
-      source = source_fixture(media_profile_id: profile.id, use_cookies: true)
+      source = source_fixture(media_profile_id: profile.id, cookie_behaviour: :all_operations)
+
+      perform_job(SourceMetadataStorageWorker, %{id: source.id})
+    end
+
+    test "does not set use_cookies if the source only uses cookies when indexing" do
+      expect(YtDlpRunnerMock, :run, 2, fn
+        _url, :get_source_details, _opts, _ot, _addl ->
+          {:ok, source_details_return_fixture()}
+
+        _url, :get_source_metadata, _opts, _ot, addl ->
+          assert {:use_cookies, false} in addl
+          {:ok, render_metadata(:channel_source_metadata)}
+      end)
+
+      profile = media_profile_fixture(%{download_source_images: true})
+      source = source_fixture(media_profile_id: profile.id, cookie_behaviour: :indexing_only)
 
       perform_job(SourceMetadataStorageWorker, %{id: source.id})
     end
@@ -270,7 +286,7 @@ defmodule Pinchflat.Metadata.SourceMetadataStorageWorkerTest do
       end)
 
       profile = media_profile_fixture(%{download_source_images: true})
-      source = source_fixture(media_profile_id: profile.id, use_cookies: false)
+      source = source_fixture(media_profile_id: profile.id, cookie_behaviour: :disabled)
 
       perform_job(SourceMetadataStorageWorker, %{id: source.id})
     end
@@ -323,7 +339,21 @@ defmodule Pinchflat.Metadata.SourceMetadataStorageWorkerTest do
           {:ok, "{}"}
       end)
 
-      source = source_fixture(%{series_directory: nil, use_cookies: true})
+      source = source_fixture(%{series_directory: nil, cookie_behaviour: :all_operations})
+      perform_job(SourceMetadataStorageWorker, %{id: source.id})
+    end
+
+    test "does not set use_cookies if the source only uses cookies when indexing" do
+      expect(YtDlpRunnerMock, :run, 2, fn
+        _url, :get_source_details, _opts, _ot, addl ->
+          assert {:use_cookies, false} in addl
+          {:ok, source_details_return_fixture()}
+
+        _url, :get_source_metadata, _opts, _ot, _addl ->
+          {:ok, "{}"}
+      end)
+
+      source = source_fixture(%{series_directory: nil, cookie_behaviour: :indexing_only})
       perform_job(SourceMetadataStorageWorker, %{id: source.id})
     end
 
@@ -337,7 +367,7 @@ defmodule Pinchflat.Metadata.SourceMetadataStorageWorkerTest do
           {:ok, "{}"}
       end)
 
-      source = source_fixture(%{series_directory: nil, use_cookies: false})
+      source = source_fixture(%{series_directory: nil, cookie_behaviour: :disabled})
       perform_job(SourceMetadataStorageWorker, %{id: source.id})
     end
   end
diff --git a/test/pinchflat/slow_indexing/slow_indexing_helpers_test.exs b/test/pinchflat/slow_indexing/slow_indexing_helpers_test.exs
index 6e00622..e74613f 100644
--- a/test/pinchflat/slow_indexing/slow_indexing_helpers_test.exs
+++ b/test/pinchflat/slow_indexing/slow_indexing_helpers_test.exs
@@ -302,14 +302,27 @@ defmodule Pinchflat.SlowIndexing.SlowIndexingHelpersTest do
 
       SlowIndexingHelpers.index_and_enqueue_download_for_media_items(source)
     end
+  end
 
+  describe "index_and_enqueue_download_for_media_items/2 when testing cookies" do
     test "sets use_cookies if the source uses cookies" do
       expect(YtDlpRunnerMock, :run, fn _url, :get_media_attributes_for_collection, _opts, _ot, addl_opts ->
         assert {:use_cookies, true} in addl_opts
         {:ok, source_attributes_return_fixture()}
       end)
 
-      source = source_fixture(%{use_cookies: true})
+      source = source_fixture(%{cookie_behaviour: :all_operations})
+
+      SlowIndexingHelpers.index_and_enqueue_download_for_media_items(source)
+    end
+
+    test "sets use_cookies if the source only uses cookies when indexing" do
+      expect(YtDlpRunnerMock, :run, fn _url, :get_media_attributes_for_collection, _opts, _ot, addl_opts ->
+        assert {:use_cookies, true} in addl_opts
+        {:ok, source_attributes_return_fixture()}
+      end)
+
+      source = source_fixture(%{cookie_behaviour: :indexing_only})
 
       SlowIndexingHelpers.index_and_enqueue_download_for_media_items(source)
     end
@@ -320,7 +333,7 @@ defmodule Pinchflat.SlowIndexing.SlowIndexingHelpersTest do
         {:ok, source_attributes_return_fixture()}
       end)
 
-      source = source_fixture(%{use_cookies: false})
+      source = source_fixture(%{cookie_behaviour: :disabled})
 
       SlowIndexingHelpers.index_and_enqueue_download_for_media_items(source)
     end
diff --git a/test/pinchflat/sources_test.exs b/test/pinchflat/sources_test.exs
index e8e02ae..531cae1 100644
--- a/test/pinchflat/sources_test.exs
+++ b/test/pinchflat/sources_test.exs
@@ -60,6 +60,28 @@ defmodule Pinchflat.SourcesTest do
     end
   end
 
+  describe "use_cookies?/2" do
+    test "returns true if the source has been set to use cookies" do
+      source = source_fixture(%{cookie_behaviour: :all_operations})
+      assert Sources.use_cookies?(source, :downloading)
+    end
+
+    test "returns false if the source has not been set to use cookies" do
+      source = source_fixture(%{cookie_behaviour: :disabled})
+      refute Sources.use_cookies?(source, :downloading)
+    end
+
+    test "returns true if the action is indexing and the source is set to :indexing_only" do
+      source = source_fixture(%{cookie_behaviour: :indexing_only})
+      assert Sources.use_cookies?(source, :indexing)
+    end
+
+    test "returns false if the action is downloading and the source is set to :indexing_only" do
+      source = source_fixture(%{cookie_behaviour: :indexing_only})
+      refute Sources.use_cookies?(source, :downloading)
+    end
+  end
+
   describe "list_sources/0" do
     test "it returns all sources" do
       source = source_fixture()
@@ -393,13 +415,13 @@ defmodule Pinchflat.SourcesTest do
       valid_attrs = %{
         media_profile_id: media_profile_fixture().id,
         original_url: "https://www.youtube.com/channel/abc123",
-        use_cookies: true
+        cookie_behaviour: :all_operations
       }
 
       assert {:ok, %Source{}} = Sources.create_source(valid_attrs)
     end
 
-    test "does not set use_cookies to false if the source has not been set to use cookies" do
+    test "does not set use_cookies if the source only uses cookies when indexing" do
       expect(YtDlpRunnerMock, :run, fn _url, :get_source_details, _opts, _ot, addl ->
         refute Keyword.get(addl, :use_cookies)
 
@@ -409,7 +431,23 @@ defmodule Pinchflat.SourcesTest do
       valid_attrs = %{
         media_profile_id: media_profile_fixture().id,
         original_url: "https://www.youtube.com/channel/abc123",
-        use_cookies: false
+        cookie_behaviour: :indexing_only
+      }
+
+      assert {:ok, %Source{}} = Sources.create_source(valid_attrs)
+    end
+
+    test "does not set use_cookies if the source has not been set to use cookies" do
+      expect(YtDlpRunnerMock, :run, fn _url, :get_source_details, _opts, _ot, addl ->
+        refute Keyword.get(addl, :use_cookies)
+
+        {:ok, playlist_return()}
+      end)
+
+      valid_attrs = %{
+        media_profile_id: media_profile_fixture().id,
+        original_url: "https://www.youtube.com/channel/abc123",
+        cookie_behaviour: :disabled
       }
 
       assert {:ok, %Source{}} = Sources.create_source(valid_attrs)