Add announcements (#12662)

* Add announcements

Fix #11006

* Add reactions to announcements

* Add admin UI for announcements

* Add unit tests

* Fix issues

- Add `with_dismissed` param to announcements API
- Fix end date not being formatted when time range is given
- Fix announcement delete causing reactions to send streaming updates
- Fix announcements container growing too wide and mascot too small
- Fix `all_day` being settable when no time range is given
- Change text "Update" to "Announcement"

* Fix scheduler unpublishing announcements before they are due

* Fix filter params not being passed to announcements filter

1 files changed, 18 insertions, 0 deletions

diff --git a/spec/controllers/api/v1/trends_controller_spec.rb b/spec/controllers/api/v1/trends_controller_spec.rb
new file mode 100644
index 000000000..91e0d18fe
--- /dev/null
+++ b/spec/controllers/api/v1/trends_controller_spec.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Api::V1::TrendsController, type: :controller do
+  render_views
+
+  describe 'GET #index' do
+    before do
+      allow(TrendingTags).to receive(:get).and_return(Fabricate.times(10, :tag))
+      get :index
+    end
+
+    it 'returns http success' do
+      expect(response).to have_http_status(200)
+    end
+  end
+end