Deliver emails for bundled notifications (initial WIP)

test/models/notification/bundle_test.rb

@@ -0,0 +1,35 @@
+require "test_helper"
+
+class Notification::BundleTest < ActiveSupport::TestCase
+  setup do
+    @user = users(:david)
+  end
+
+  test "new notifications are bundled" do
+    notification = assert_difference -> { @user.notification_bundles.pending.count }, 1 do
+      @user.notifications.create!(source: events(:logo_published), creator: @user)
+    end
+
+    bundle = @user.notification_bundles.pending.last
+    assert_includes bundle.notifications, notification
+  end
+
+  test "notifications are bundled withing the aggregation period" do
+    notification_1 = assert_difference -> { @user.notification_bundles.pending.count }, 1 do
+      @user.notifications.create!(source: events(:logo_published), creator: @user)
+    end
+    travel_to 3.hours.from_now
+
+    notification_2 = assert_no_difference -> { @user.notification_bundles.count } do
+      @user.notifications.create!(source: events(:logo_published), creator: @user)
+    end
+    travel_to 3.hours.from_now
+
+    notification_3 = assert_difference -> { @user.notification_bundles.pending.count }, 1 do
+      @user.notifications.create!(source: events(:logo_published), creator: @user)
+    end
+
+    bundle_1, bundle_2 = @user.notification_bundles.last(2)
+
+  end
+end