Move Approval model to FOSS

app/models/merge_request.rb

@@ -90,6 +90,9 @@ class MergeRequest < ApplicationRecord
   has_many :draft_notes
   has_many :reviews, inverse_of: :merge_request
 
+  has_many :approvals, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
+  has_many :approved_by_users, through: :approvals, source: :user
+
   KNOWN_MERGE_PARAMS = [
     :auto_merge_strategy,
     :should_remove_source_branch,

ee/app/models/ee/merge_request.rb

@@ -15,8 +15,6 @@ module EE
       include DeprecatedApprovalsBeforeMerge
       include UsageStatistics
 
-      has_many :approvals, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
-      has_many :approved_by_users, through: :approvals, source: :user
       has_many :approvers, as: :target, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
       has_many :approver_users, through: :approvers, source: :user
       has_many :approver_groups, as: :target, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent

ee/spec/models/approval_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Approval do
-  subject { create(:approval) }
-
-  it { is_expected.to be_valid }
-end

spec/models/approval_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Approval do
+  context 'presence validation' do
+    it { is_expected.to validate_presence_of(:merge_request_id) }
+    it { is_expected.to validate_presence_of(:user_id) }
+  end
+
+  context 'uniqueness validation' do
+    let!(:existing_record) { create(:approval) }
+
+    it { is_expected.to validate_uniqueness_of(:user_id).scoped_to([:merge_request_id]) }
+  end
+end