Refactor modules into contexts (#78)

* [WIP] break out a few contexts, start refactoring fast index modules

* [WIP] more contexts, this time around slow indexing and downloads

* [WIP] got all tests passing

* [WIP] Added moduledocs

* Built a genserver to rename old jobs on boot

* Added a module naming check; moved things around

* Fixed specs

test/pinchflat/fast_indexing/fast_indexing_worker_test.exs

@@ -0,0 +1,46 @@
+defmodule Pinchflat.FastIndexing.FastIndexingWorkerTest do
+  use Pinchflat.DataCase
+
+  import Mox
+  import Pinchflat.SourcesFixtures
+
+  alias Pinchflat.Sources.Source
+  alias Pinchflat.FastIndexing.FastIndexingWorker
+
+  setup :verify_on_exit!
+
+  describe "perform/1" do
+    test "calls out to Youtube RSS if enabled" do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, ""} end)
+      source = source_fixture(fast_index: true)
+
+      perform_job(FastIndexingWorker, %{"id" => source.id})
+    end
+
+    test "reschedules itself if fast indexing is enabled" do
+      expect(HTTPClientMock, :get, fn _url -> {:ok, ""} end)
+      source = source_fixture(fast_index: true)
+      perform_job(FastIndexingWorker, %{"id" => source.id})
+
+      assert_enqueued(
+        worker: FastIndexingWorker,
+        args: %{"id" => source.id},
+        scheduled_at: now_plus(Source.fast_index_frequency(), :minutes)
+      )
+    end
+
+    test "does not call out to Youtube RSS if disabled" do
+      expect(HTTPClientMock, :get, 0, fn _url -> {:ok, ""} end)
+      source = source_fixture(fast_index: false)
+
+      perform_job(FastIndexingWorker, %{"id" => source.id})
+    end
+
+    test "does not reschedule itself if fast indexing is disabled" do
+      source = source_fixture(fast_index: false)
+      perform_job(FastIndexingWorker, %{"id" => source.id})
+
+      refute_enqueued(worker: FastIndexingWorker, args: %{"id" => source.id})
+    end
+  end
+end