Add ability to sort vulnerabilities by title

This change adds ability to sort vulnerabilities by title in
GraphQL.

doc/api/graphql/reference/gitlab_schema.graphql

@@ -19478,6 +19478,16 @@ enum VulnerabilitySort {
   Severity in descending order
   """
   severity_desc
+
+  """
+  Title in ascending order
+  """
+  title_asc
+
+  """
+  Title in descending order
+  """
+  title_desc
 }
 
 """

doc/api/graphql/reference/gitlab_schema.json

@@ -56960,6 +56960,18 @@
               "description": "Severity in ascending order",
               "isDeprecated": false,
               "deprecationReason": null
+            },
+            {
+              "name": "title_desc",
+              "description": "Title in descending order",
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "title_asc",
+              "description": "Title in ascending order",
+              "isDeprecated": false,
+              "deprecationReason": null
             }
           ],
           "possibleTypes": null

doc/api/graphql/reference/index.md

@@ -3592,6 +3592,8 @@ Vulnerability sort values.
 | ----- | ----------- |
 | `severity_asc` | Severity in ascending order |
 | `severity_desc` | Severity in descending order |
+| `title_asc` | Title in ascending order |
+| `title_desc` | Title in descending order |
 
 ### VulnerabilityState
 

ee/app/graphql/types/vulnerability_sort_enum.rb

@@ -7,5 +7,7 @@ module Types
 
     value 'severity_desc', 'Severity in descending order'
     value 'severity_asc', 'Severity in ascending order'
+    value 'title_desc', 'Title in descending order'
+    value 'title_asc', 'Title in ascending order'
   end
 end

ee/app/models/ee/vulnerability.rb

@@ -88,6 +88,8 @@ module EE
 
       scope :order_severity_asc, -> { reorder(severity: :asc, id: :desc) }
       scope :order_severity_desc, -> { reorder(severity: :desc, id: :desc) }
+      scope :order_title_asc, -> { reorder(title: :asc, id: :desc) }
+      scope :order_title_desc, -> { reorder(title: :desc, id: :desc) }
 
       delegate :scanner_name, :scanner_external_id, :metadata, :message, :cve, :description,
       to: :finding, prefix: true, allow_nil: true
@@ -190,6 +192,8 @@ module EE
         case method.to_s
         when 'severity_desc' then order_severity_desc
         when 'severity_asc' then order_severity_asc
+        when 'title_desc' then order_title_desc
+        when 'title_asc' then order_title_asc
         else
           order_severity_desc
         end

ee/changelogs/unreleased/249245-add-sorting-vulnerabilities-by-title.yml

+---
+title: Add ability to sort vulnerabilities by title in GraphQL
+merge_request: 42953
+author:
+type: added

ee/spec/graphql/types/vulnerability_sort_enum_spec.rb

@@ -6,6 +6,6 @@ RSpec.describe GitlabSchema.types['VulnerabilitySort'] do
   it { expect(described_class.graphql_name).to eq('VulnerabilitySort') }
 
   it 'exposes all the existing Vulnerability sort orders' do
-    expect(described_class.values.keys).to include(*%w[severity_desc severity_asc])
+    expect(described_class.values.keys).to include(*%w[severity_desc severity_asc title_desc title_asc])
   end
 end

ee/spec/models/ee/vulnerability_spec.rb

@@ -181,6 +181,28 @@ RSpec.describe Vulnerability do
     end
   end
 
+  describe '.order_title_' do
+    let_it_be(:vulnerability_b) { create(:vulnerability, title: 'B Vulnerability') }
+    let_it_be(:vulnerability_a) { create(:vulnerability, title: 'A Vulnerability') }
+    let_it_be(:vulnerability_c) { create(:vulnerability, title: 'C Vulnerability') }
+
+    describe 'asc' do
+      subject { described_class.order_title_asc }
+
+      it 'returns vulnerabilities ordered by title' do
+        is_expected.to eq([vulnerability_a, vulnerability_b, vulnerability_c])
+      end
+    end
+
+    describe 'desc' do
+      subject { described_class.order_title_desc }
+
+      it 'returns vulnerabilities ordered by title' do
+        is_expected.to eq([vulnerability_c, vulnerability_b, vulnerability_a])
+      end
+    end
+  end
+
   describe '.with_resolution' do
     let_it_be(:vulnerability_with_resolution) { create(:vulnerability, resolved_on_default_branch: true) }
     let_it_be(:vulnerability_without_resolution) { create(:vulnerability, resolved_on_default_branch: false) }