Improve spec coverage and clean up api/v1/follow_requests controller (#3465)

app/controllers/api/v1/follow_requests_controller.rb

@@ -3,32 +3,72 @@
 class Api::V1::FollowRequestsController < ApiController
   before_action -> { doorkeeper_authorize! :follow }
   before_action :require_user!
+  after_action :insert_pagination_headers, only: :index
 
   def index
-    @accounts = Account.includes(:follow_requests)
-                       .references(:follow_requests)
-                       .merge(FollowRequest.where(target_account: current_account)
-                                           .paginate_by_max_id(DEFAULT_ACCOUNTS_LIMIT, params[:max_id], params[:since_id]))
-                       .to_a
-
-    next_path = api_v1_follow_requests_url(pagination_params(max_id: @accounts.last.follow_requests.last.id))     if @accounts.size == DEFAULT_ACCOUNTS_LIMIT
-    prev_path = api_v1_follow_requests_url(pagination_params(since_id: @accounts.first.follow_requests.first.id)) unless @accounts.empty?
-
-    set_pagination_headers(next_path, prev_path)
+    @accounts = load_accounts
   end
 
   def authorize
-    AuthorizeFollowService.new.call(Account.find(params[:id]), current_account)
+    AuthorizeFollowService.new.call(account, current_account)
     render_empty
   end
 
   def reject
-    RejectFollowService.new.call(Account.find(params[:id]), current_account)
+    RejectFollowService.new.call(account, current_account)
     render_empty
   end
 
   private
 
+  def account
+    Account.find(params[:id])
+  end
+
+  def load_accounts
+    default_accounts.merge(paginated_follow_requests).to_a
+  end
+
+  def default_accounts
+    Account.includes(:follow_requests).references(:follow_requests)
+  end
+
+  def paginated_follow_requests
+    FollowRequest.where(target_account: current_account).paginate_by_max_id(
+      limit_param(DEFAULT_ACCOUNTS_LIMIT),
+      params[:max_id],
+      params[:since_id]
+    )
+  end
+
+  def insert_pagination_headers
+    set_pagination_headers(next_path, prev_path)
+  end
+
+  def next_path
+    if records_continue?
+      api_v1_follow_requests_url pagination_params(max_id: pagination_max_id)
+    end
+  end
+
+  def prev_path
+    unless @accounts.empty?
+      api_v1_follow_requests_url pagination_params(since_id: pagination_since_id)
+    end
+  end
+
+  def pagination_max_id
+    @accounts.last.follow_requests.last.id
+  end
+
+  def pagination_since_id
+    @accounts.first.follow_requests.first.id
+  end
+
+  def records_continue?
+    @accounts.size == limit_param(DEFAULT_ACCOUNTS_LIMIT)
+  end
+
   def pagination_params(core_params)
     params.permit(:limit).merge(core_params)
   end

spec/controllers/api/v1/follow_requests_controller_spec.rb

@@ -14,7 +14,7 @@ RSpec.describe Api::V1::FollowRequestsController, type: :controller do
 
   describe 'GET #index' do
     before do
-      get :index
+      get :index, params: { limit: 1 }
     end
 
     it 'returns http success' do