Add some validations to persisted stage model

app/models/ci/stage.rb

 module Ci
   class Stage < ActiveRecord::Base
     extend Ci::Model
+    include Importable
     include HasStatus
 
     enumerated_status!
@@ -10,5 +11,9 @@ module Ci
 
     has_many :statuses, class_name: 'CommitStatus', foreign_key: :commit_id
     has_many :builds, foreign_key: :commit_id
+
+    validates :project, presence: true, unless: :importing?
+    validates :pipeline, presence: true, unless: :importing?
+    validates :name, presence: true, unless: :importing?
   end
 end

app/models/concerns/has_status.rb

@@ -12,6 +12,10 @@ module HasStatus
                     failed: 4, canceled: 5, skipped: 6, manual: 7 }
 
   class_methods do
+    def enumerated_status!
+      enum status: HasStatus::STATUSES_ENUM
+    end
+
     def status_sql
       scope_relevant = respond_to?(:exclude_ignored) ? exclude_ignored : all
       scope_warnings = respond_to?(:failed_but_allowed) ? failed_but_allowed : none
@@ -56,14 +60,6 @@ module HasStatus
     def all_state_names
       state_machines.values.flat_map(&:states).flat_map { |s| s.map(&:name) }
     end
-
-    private
-
-    def enumerated_status!
-      @status_strategy = :enumerator
-
-      enum status: HasStatus::STATUSES_ENUM
-    end
   end
 
   included do

spec/factories/ci/stages.rb

@@ -19,6 +19,8 @@ FactoryGirl.define do
   factory :ci_stage_entity, class: Ci::Stage do
     project factory: :empty_project
     pipeline factory: :ci_empty_pipeline
+
+    name 'test'
     status 'pending'
   end
 end