Associate successful DAST validations with sites

- Amends service to associate with existing validations
- Updates specs to be easier to understand

Changelog: changed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/70140
EE: true

ee/app/graphql/mutations/dast_site_validations/create.rb

@@ -38,7 +38,7 @@ module Mutations
 
         dast_site_token = dast_site_token_id.find
 
-        response = ::DastSiteValidations::CreateService.new(
+        response = ::DastSiteValidations::FindOrCreateService.new(
           container: project,
           current_user: current_user,
           params: {

ee/app/services/dast_site_validations/create_service.rb → ee/app/services/dast_site_validations/find_or_create_service.rb

 # frozen_string_literal: true
 
 module DastSiteValidations
-  class CreateService < BaseContainerService
+  class FindOrCreateService < BaseContainerService
     def execute
       return ServiceResponse.error(message: 'Insufficient permissions') unless allowed?
-      return ServiceResponse.success(payload: existing_validation) if existing_validation
 
-      dast_site_validation = create_validation!
+      dast_site_validation = existing_successful_validation || create_validation!
 
       return ServiceResponse.error(message: 'Site does not exist for profile') unless dast_site_validation.dast_site
 
       associate_dast_site!(dast_site_validation)
 
+      return ServiceResponse.success(payload: dast_site_validation) if dast_site_validation.passed?
+
       perform_runner_validation(dast_site_validation)
     rescue ActiveRecord::RecordInvalid => err
       ServiceResponse.error(message: err.record.errors.full_messages)
@@ -38,8 +39,8 @@ module DastSiteValidations
       @validation_strategy ||= params.fetch(:validation_strategy)
     end
 
-    def existing_validation
-      @existing_validation ||= find_latest_successful_dast_site_validation
+    def existing_successful_validation
+      @existing_successful_validation ||= find_latest_successful_dast_site_validation
     end
 
     def url_base

ee/spec/services/dast_site_validations/create_service_spec.rb → ee/spec/services/dast_site_validations/find_or_create_service_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe DastSiteValidations::CreateService do
+RSpec.describe DastSiteValidations::FindOrCreateService do
   let_it_be(:project) { create(:project, :repository) }
   let_it_be(:developer) { create(:user, developer_projects: [project]) }
   let_it_be(:dast_site) { create(:dast_site, project: project) }
@@ -12,7 +12,8 @@ RSpec.describe DastSiteValidations::CreateService do
 
   subject { described_class.new(container: project, current_user: developer, params: params).execute }
 
-  shared_examples 'the licensed feature is not available' do
+  describe 'execute', :clean_gitlab_redis_shared_state do
+    context 'when the licensed feature is available' do
       it 'communicates failure' do
         stub_licensed_features(security_on_demand_scans: false)
 
@@ -23,7 +24,7 @@ RSpec.describe DastSiteValidations::CreateService do
       end
     end
 
-  shared_examples 'the licensed feature is available' do
+    context 'when the licensed feature is available' do
       before do
         stub_licensed_features(security_on_demand_scans: true)
       end
@@ -40,6 +41,14 @@ RSpec.describe DastSiteValidations::CreateService do
         expect(subject.payload).to eq(dast_site.reload.dast_site_validation)
       end
 
+      it 'attempts to validate' do
+        expected_args = { project: project, current_user: developer, params: { dast_site_validation: instance_of(DastSiteValidation) } }
+
+        expect(AppSec::Dast::SiteValidations::RunnerService).to receive(:new).with(expected_args).and_call_original
+
+        subject
+      end
+
       context 'when a param is missing' do
         let(:params) { { dast_site_token: dast_site_token, validation_strategy: :text_file } }
 
@@ -72,38 +81,27 @@ RSpec.describe DastSiteValidations::CreateService do
           end
         end
       end
-  end
 
-  shared_examples 'a dast_site_validation already exists' do
-    let!(:dast_site_validation) { create(:dast_site_validation, dast_site_token: dast_site_token, state: :passed) }
+      context 'when the site has already passed validation' do
+        let_it_be(:dast_site_validation) { create(:dast_site_validation, dast_site_token: dast_site_token, state: :passed) }
 
-    it 'returns the existing successful dast_site_validation' do
+        it 'returns the existing dast_site_validation' do
           expect(subject.payload).to eq(dast_site_validation)
         end
 
         it 'does not create a new record in the database' do
           expect { subject }.not_to change { DastSiteValidation.count }
         end
-  end
-
-  describe 'execute', :clean_gitlab_redis_shared_state do
-    it_behaves_like 'the licensed feature is not available'
 
-    it_behaves_like 'the licensed feature is available' do
-      it 'attempts to validate' do
-        expected_args = { project: project, current_user: developer, params: { dast_site_validation: instance_of(DastSiteValidation) } }
-
-        expect(AppSec::Dast::SiteValidations::RunnerService).to receive(:new).with(expected_args).and_call_original
-
-        subject
-      end
-
-      it_behaves_like 'a dast_site_validation already exists' do
         it 'does not attempt to re-validate' do
           expect(AppSec::Dast::SiteValidations::RunnerService).not_to receive(:new)
 
           subject
         end
+
+        it 'associates the dast_site_validation with the dast_site' do
+          expect(subject.payload).to eq(dast_site.reload.dast_site_validation)
+        end
       end
     end
   end