API param to exclude notification types from response (#1341)

* Add exclude_types param to /api/v1/notifications

* Exclude notification types in web UI through exclude_types in the API

spec/controllers/api/v1/notifications_controller_spec.rb

@@ -5,15 +5,71 @@ RSpec.describe Api::V1::NotificationsController, type: :controller do
 
   let(:user)  { Fabricate(:user, account: Fabricate(:account, username: 'alice')) }
   let(:token) { double acceptable?: true, resource_owner_id: user.id }
+  let(:other) { Fabricate(:user, account: Fabricate(:account, username: 'bob')) }
 
   before do
     allow(controller).to receive(:doorkeeper_token) { token }
   end
 
   describe 'GET #index' do
-    it 'returns http success' do
-      get :index
-      expect(response).to have_http_status(:success)
+    before do
+      status     = PostStatusService.new.call(user.account, 'Test')
+      @reblog    = ReblogService.new.call(other.account, status)
+      @mention   = PostStatusService.new.call(other.account, 'Hello @alice')
+      @favourite = FavouriteService.new.call(other.account, status)
+      @follow    = FollowService.new.call(other.account, 'alice')
+    end
+
+    describe 'with no options' do
+      before do
+        get :index
+      end
+
+      it 'returns http success' do
+        expect(response).to have_http_status(:success)
+      end
+
+      it 'includes reblog' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@reblog.id)
+      end
+
+      it 'includes mention' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@mention.mentions.first.id)
+      end
+
+      it 'includes favourite' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@favourite.id)
+      end
+
+      it 'includes follow' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@follow.id)
+      end
+    end
+
+    describe 'with excluded mentions' do
+      before do
+        get :index, params: { exclude_types: ['mention'] }
+      end
+
+      it 'returns http success' do
+        expect(response).to have_http_status(:success)
+      end
+
+      it 'includes reblog' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@reblog.id)
+      end
+
+      it 'excludes mention' do
+        expect(assigns(:notifications).map(&:activity_id)).to_not include(@mention.mentions.first.id)
+      end
+
+      it 'includes favourite' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@favourite.id)
+      end
+
+      it 'includes follow' do
+        expect(assigns(:notifications).map(&:activity_id)).to include(@follow.id)
+      end
     end
   end
 end