Spec coverage for `api/v1/trends` controllers (#27837)

spec/controllers/api/v1/trends/links_controller_spec.rb

@@ -2,14 +2,44 @@
 
 require 'rails_helper'
 
-describe Api::V1::Trends::LinksController do
+RSpec.describe Api::V1::Trends::LinksController do
   render_views
 
   describe 'GET #index' do
-    it 'returns http success' do
-      get :index
+    around do |example|
+      previous = Setting.trends
+      example.run
+      Setting.trends = previous
+    end
 
-      expect(response).to have_http_status(200)
+    context 'when trends are disabled' do
+      before { Setting.trends = false }
+
+      it 'returns http success' do
+        get :index
+
+        expect(response).to have_http_status(200)
+      end
+    end
+
+    context 'when trends are enabled' do
+      before { Setting.trends = true }
+
+      it 'returns http success' do
+        prepare_trends
+        stub_const('Api::V1::Trends::LinksController::DEFAULT_LINKS_LIMIT', 2)
+        get :index
+
+        expect(response).to have_http_status(200)
+        expect(response.headers).to include('Link')
+      end
+
+      def prepare_trends
+        Fabricate.times(3, :preview_card, trendable: true, language: 'en').each do |link|
+          2.times { |i| Trends.links.add(link, i) }
+        end
+        Trends::Links.new(threshold: 1).refresh
+      end
     end
   end
 end

spec/controllers/api/v1/trends/statuses_controller_spec.rb

@@ -2,14 +2,44 @@
 
 require 'rails_helper'
 
-describe Api::V1::Trends::StatusesController do
+RSpec.describe Api::V1::Trends::StatusesController do
   render_views
 
   describe 'GET #index' do
-    it 'returns http success' do
-      get :index
+    around do |example|
+      previous = Setting.trends
+      example.run
+      Setting.trends = previous
+    end
 
-      expect(response).to have_http_status(200)
+    context 'when trends are disabled' do
+      before { Setting.trends = false }
+
+      it 'returns http success' do
+        get :index
+
+        expect(response).to have_http_status(200)
+      end
+    end
+
+    context 'when trends are enabled' do
+      before { Setting.trends = true }
+
+      it 'returns http success' do
+        prepare_trends
+        stub_const('Api::BaseController::DEFAULT_STATUSES_LIMIT', 2)
+        get :index
+
+        expect(response).to have_http_status(200)
+        expect(response.headers).to include('Link')
+      end
+
+      def prepare_trends
+        Fabricate.times(3, :status, trendable: true, language: 'en').each do |status|
+          2.times { |i| Trends.statuses.add(status, i) }
+        end
+        Trends::Statuses.new(threshold: 1, decay_threshold: -1).refresh
+      end
     end
   end
 end

spec/controllers/api/v1/trends/tags_controller_spec.rb

@@ -6,16 +6,41 @@ RSpec.describe Api::V1::Trends::TagsController do
   render_views
 
   describe 'GET #index' do
-    before do
-      Fabricate.times(10, :tag).each do |tag|
-        10.times { |i| Trends.tags.add(tag, i) }
-      end
-
-      get :index
+    around do |example|
+      previous = Setting.trends
+      example.run
+      Setting.trends = previous
     end
 
-    it 'returns http success' do
-      expect(response).to have_http_status(200)
+    context 'when trends are disabled' do
+      before { Setting.trends = false }
+
+      it 'returns http success' do
+        get :index
+
+        expect(response).to have_http_status(200)
+        expect(response.headers).to_not include('Link')
+      end
+    end
+
+    context 'when trends are enabled' do
+      before { Setting.trends = true }
+
+      it 'returns http success' do
+        prepare_trends
+        stub_const('Api::V1::Trends::TagsController::DEFAULT_TAGS_LIMIT', 2)
+        get :index
+
+        expect(response).to have_http_status(200)
+        expect(response.headers).to include('Link')
+      end
+
+      def prepare_trends
+        Fabricate.times(3, :tag, trendable: true).each do |tag|
+          2.times { |i| Trends.tags.add(tag, i) }
+        end
+        Trends::Tags.new(threshold: 1).refresh
+      end
     end
   end
 end