Filter by most recent in DastSiteValidationsFinder

Returns only the most recent validation by url_base.

ee/app/finders/dast_site_validations_finder.rb

@@ -10,6 +10,7 @@ class DastSiteValidationsFinder
 
   def execute
     relation = DastSiteValidation.all
+    relation = by_most_recent(relation)
     relation = by_project(relation)
     relation = by_url_base(relation)
     relation = by_state(relation)
@@ -21,6 +22,12 @@ class DastSiteValidationsFinder
 
   attr_reader :params
 
+  def by_most_recent(relation)
+    return relation unless params[:most_recent]
+
+    relation.by_most_recent
+  end
+
   def by_project(relation)
     return relation if params[:project_id].nil?
 

ee/app/graphql/resolvers/dast_site_validation_resolver.rb

@@ -12,7 +12,7 @@ module Resolvers
     def resolve(**args)
       return DastSiteValidation.none unless allowed?
 
-      DastSiteValidationsFinder.new(project_id: project.id, url_base: args[:normalized_target_urls]).execute
+      DastSiteValidationsFinder.new(project_id: project.id, url_base: args[:normalized_target_urls], most_recent: true).execute
     end
 
     private

ee/app/models/dast_site_validation.rb

@@ -17,6 +17,10 @@ class DastSiteValidation < ApplicationRecord
     where(url_base: url_base)
   end
 
+  scope :by_most_recent, -> do
+    where(id: select('MAX(id) AS id').group(:url_base))
+  end
+
   before_create :set_normalized_url_base
 
   enum validation_strategy: { text_file: 0, header: 1 }

ee/spec/finders/dast_site_validations_finder_spec.rb

@@ -18,11 +18,17 @@ RSpec.describe DastSiteValidationsFinder do
       expect(subject).to eq([dast_site_validation_3, dast_site_validation_2, dast_site_validation_1])
     end
 
-    context 'filtering by url_base' do
-      let(:params) { { url_base: dast_site_validation_1.url_base } }
+    context 'filtering by most_recent' do
+      let(:params) { { most_recent: true } }
 
       it 'returns the matching dast_site_validations' do
-        expect(subject).to eq([dast_site_validation_3, dast_site_validation_1])
+        expect(subject).to eq([dast_site_validation_3, dast_site_validation_2])
+      end
+
+      it 'allows the results to be easily re-ordered' do
+        relation = subject.reorder(id: :asc)
+
+        expect(relation).to eq([dast_site_validation_2, dast_site_validation_3])
       end
     end
 
@@ -32,13 +38,29 @@ RSpec.describe DastSiteValidationsFinder do
       it 'returns the matching dast_site_validations' do
         expect(subject).to eq([dast_site_validation_2])
       end
+
+      context 'when url_base is for a different project' do
+        let(:params) { { project_id: dast_site_validation_2.project.id, url_base: dast_site_validation_1.url_base } }
+
+        it 'returns an empty relation' do
+          expect(subject).to be_empty
+        end
+      end
     end
 
-    context 'when url_base is for a different project' do
-      let(:params) { { url_base: dast_site_validation_1.url_base, project_id: dast_site_validation_2.project.id } }
+    context 'filtering by url_base' do
+      let(:params) { { url_base: dast_site_validation_1.url_base } }
 
-      it 'returns an empty relation' do
-        expect(subject).to be_empty
+      it 'returns the matching dast_site_validations' do
+        expect(subject).to eq([dast_site_validation_3, dast_site_validation_1])
+      end
+    end
+
+    context 'filtering by *' do
+      let(:params) { { project_id: dast_site_validation_1.project.id, url_base: dast_site_validation_1.url_base, most_recent: true } }
+
+      it 'returns the matching dast_site_validations' do
+        expect(subject).to eq([dast_site_validation_3])
       end
     end
   end

ee/spec/graphql/resolvers/dast_site_validation_resolver_spec.rb

@@ -37,7 +37,7 @@ RSpec.describe Resolvers::DastSiteValidationResolver do
       it { is_expected.to contain_exactly(dast_site_validation3, dast_site_validation1) }
     end
 
-    context 'when one normalized_target_urls is specified' do
+    context 'when one normalized_target_url is specified' do
       let(:args) { { normalized_target_urls: [dast_site_validation2.url_base] } }
 
       it { is_expected.to contain_exactly(dast_site_validation2) }

ee/spec/models/dast_site_validation_spec.rb

@@ -50,7 +50,7 @@ RSpec.describe DastSiteValidation, type: :model do
 
     describe 'by_url_base' do
       let(:more_dast_site_validations) do
-        create_list(:dast_site_validation, 5, dast_site_token: subject.dast_site_token).prepend(subject)
+        create_list(:dast_site_validation, 5, dast_site_token: subject.dast_site_token)
       end
 
       it 'includes the correct records' do
@@ -59,6 +59,18 @@ RSpec.describe DastSiteValidation, type: :model do
         expect(result).not_to include(another_dast_site_validation)
       end
     end
+
+    describe 'by_most_recent' do
+      let(:more_dast_site_validations) do
+        create_list(:dast_site_validation, 5, dast_site_token: subject.dast_site_token)
+      end
+
+      it 'includes the correct records' do
+        result = described_class.by_most_recent
+
+        expect(result).to contain_exactly(another_dast_site_validation, more_dast_site_validations.last)
+      end
+    end
   end
 
   describe 'enums' do

ee/spec/requests/api/graphql/project/dast_site_validations_spec.rb

@@ -6,11 +6,14 @@ RSpec.describe 'Query.project(fullPath).dastSiteValidations' do
   include GraphqlHelpers
 
   let_it_be(:project) { create(:project) }
-  let_it_be(:dast_site_token) { create(:dast_site_token, project: project, url: generate(:url)) }
-  let_it_be(:dast_site_validation1) { create(:dast_site_validation, dast_site_token: dast_site_token) }
-  let_it_be(:dast_site_validation2) { create(:dast_site_validation, dast_site_token: dast_site_token) }
-  let_it_be(:dast_site_validation3) { create(:dast_site_validation, dast_site_token: dast_site_token) }
-  let_it_be(:dast_site_validation4) { create(:dast_site_validation, dast_site_token: dast_site_token) }
+  let_it_be(:dast_site_token1) { create(:dast_site_token, project: project, url: generate(:url)) }
+  let_it_be(:dast_site_token2) { create(:dast_site_token, project: project, url: generate(:url)) }
+  let_it_be(:dast_site_token3) { create(:dast_site_token, project: project, url: generate(:url)) }
+  let_it_be(:dast_site_token4) { create(:dast_site_token, project: project, url: generate(:url)) }
+  let_it_be(:dast_site_validation1) { create(:dast_site_validation, dast_site_token: dast_site_token1) }
+  let_it_be(:dast_site_validation2) { create(:dast_site_validation, dast_site_token: dast_site_token2) }
+  let_it_be(:dast_site_validation3) { create(:dast_site_validation, dast_site_token: dast_site_token3) }
+  let_it_be(:dast_site_validation4) { create(:dast_site_validation, dast_site_token: dast_site_token4) }
   let_it_be(:current_user) { create(:user) }
 
   subject do