Add `dismissal_reason` argument to the `VulnerabilityDismiss` mutation

This argument will provide better structured dismissal reason tracking.

doc/api/graphql/reference/gitlab_schema.graphql

@@ -7742,10 +7742,15 @@ input DismissVulnerabilityInput {
   clientMutationId: String
 
   """
-  Reason why vulnerability should be dismissed
+  Comment why vulnerability should be dismissed
   """
   comment: String
 
+  """
+  Reason why vulnerability should be dismissed
+  """
+  dismissalReason: VulnerabilityDismissalReason
+
   """
   ID of the vulnerability to be dismissed
   """
@@ -25997,10 +26002,15 @@ input VulnerabilityDismissInput {
   clientMutationId: String
 
   """
-  Reason why vulnerability should be dismissed
+  Comment why vulnerability should be dismissed
   """
   comment: String
 
+  """
+  Reason why vulnerability should be dismissed
+  """
+  dismissalReason: VulnerabilityDismissalReason
+
   """
   ID of the vulnerability to be dismissed
   """
@@ -26027,6 +26037,17 @@ type VulnerabilityDismissPayload {
   vulnerability: Vulnerability
 }
 
+"""
+The dismissal reason of the Vulnerability
+"""
+enum VulnerabilityDismissalReason {
+  ACCEPTABLE_RISK
+  FALSE_POSITIVE
+  MITIGATING_CONTROL
+  NOT_APPLICABLE
+  USED_IN_TESTS
+}
+
 """
 An edge in a connection.
 """

doc/api/graphql/reference/gitlab_schema.json

@@ -21435,7 +21435,7 @@
             },
             {
               "name": "comment",
-              "description": "Reason why vulnerability should be dismissed",
+              "description": "Comment why vulnerability should be dismissed",
               "type": {
                 "kind": "SCALAR",
                 "name": "String",
@@ -21443,6 +21443,16 @@
               },
               "defaultValue": null
             },
+            {
+              "name": "dismissalReason",
+              "description": "Reason why vulnerability should be dismissed",
+              "type": {
+                "kind": "ENUM",
+                "name": "VulnerabilityDismissalReason",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
             {
               "name": "clientMutationId",
               "description": "A unique identifier for the client performing the mutation.",
@@ -75380,7 +75390,7 @@
             },
             {
               "name": "comment",
-              "description": "Reason why vulnerability should be dismissed",
+              "description": "Comment why vulnerability should be dismissed",
               "type": {
                 "kind": "SCALAR",
                 "name": "String",
@@ -75388,6 +75398,16 @@
               },
               "defaultValue": null
             },
+            {
+              "name": "dismissalReason",
+              "description": "Reason why vulnerability should be dismissed",
+              "type": {
+                "kind": "ENUM",
+                "name": "VulnerabilityDismissalReason",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
             {
               "name": "clientMutationId",
               "description": "A unique identifier for the client performing the mutation.",
@@ -75470,6 +75490,47 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "ENUM",
+          "name": "VulnerabilityDismissalReason",
+          "description": "The dismissal reason of the Vulnerability",
+          "fields": null,
+          "inputFields": null,
+          "interfaces": null,
+          "enumValues": [
+            {
+              "name": "ACCEPTABLE_RISK",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "FALSE_POSITIVE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "MITIGATING_CONTROL",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "USED_IN_TESTS",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "NOT_APPLICABLE",
+              "description": null,
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "possibleTypes": null
+        },
         {
           "kind": "OBJECT",
           "name": "VulnerabilityEdge",

doc/api/graphql/reference/index.md

@@ -4935,6 +4935,18 @@ Possible states of a user.
 | `private` |  |
 | `public` |  |
 
+### VulnerabilityDismissalReason
+
+The dismissal reason of the Vulnerability.
+
+| Value | Description |
+| ----- | ----------- |
+| `ACCEPTABLE_RISK` |  |
+| `FALSE_POSITIVE` |  |
+| `MITIGATING_CONTROL` |  |
+| `NOT_APPLICABLE` |  |
+| `USED_IN_TESTS` |  |
+
 ### VulnerabilityExternalIssueLinkExternalTracker
 
 The external tracker of the external issue link related to a vulnerability.

ee/app/graphql/mutations/vulnerabilities/dismiss.rb

@@ -19,11 +19,16 @@ module Mutations
       argument :comment,
                GraphQL::STRING_TYPE,
                required: false,
+               description: 'Comment why vulnerability should be dismissed'
+
+      argument :dismissal_reason,
+               Types::Vulnerabilities::DismissalReasonEnum,
+               required: false,
                description: 'Reason why vulnerability should be dismissed'
 
-      def resolve(id:, comment: nil)
+      def resolve(id:, comment: nil, dismissal_reason: nil)
         vulnerability = authorized_find!(id: id)
-        result = dismiss_vulnerability(vulnerability, comment)
+        result = dismiss_vulnerability(vulnerability, comment, dismissal_reason)
 
         {
           vulnerability: result,
@@ -33,8 +38,8 @@ module Mutations
 
       private
 
-      def dismiss_vulnerability(vulnerability, comment)
-        ::Vulnerabilities::DismissService.new(current_user, vulnerability, comment).execute
+      def dismiss_vulnerability(vulnerability, comment, dismissal_reason)
+        ::Vulnerabilities::DismissService.new(current_user, vulnerability, comment, dismissal_reason).execute
       end
 
       def find_object(id:)

ee/app/graphql/types/vulnerabilities/dismissal_reason_enum.rb

+# frozen_string_literal: true
+
+module Types
+  module Vulnerabilities
+    class DismissalReasonEnum < BaseEnum
+      graphql_name 'VulnerabilityDismissalReason'
+      description 'The dismissal reason of the Vulnerability'
+
+      ::Vulnerabilities::Feedback.dismissal_reasons.keys.each do |dismissal_reason|
+        value dismissal_reason.to_s.upcase, value: dismissal_reason.to_s
+      end
+    end
+  end
+end

ee/app/services/vulnerabilities/dismiss_service.rb

@@ -6,9 +6,10 @@ module Vulnerabilities
   class DismissService < BaseService
     FindingsDismissResult = Struct.new(:ok?, :finding, :message)
 
-    def initialize(current_user, vulnerability, comment = nil, dismiss_findings: true)
+    def initialize(current_user, vulnerability, comment = nil, dismissal_reason = nil, dismiss_findings: true)
       super(current_user, vulnerability)
       @comment = comment
+      @dismissal_reason = dismissal_reason
       @dismiss_findings = dismiss_findings
     end
 
@@ -45,6 +46,7 @@ module Vulnerabilities
         feedback_type: 'dismissal',
         project_fingerprint: finding.project_fingerprint,
         comment: @comment,
+        dismissal_reason: @dismissal_reason,
         pipeline: @project.latest_pipeline_with_security_reports(only_successful: true),
         finding_uuid: finding.uuid_v5,
         dismiss_vulnerability: false

ee/spec/graphql/mutations/vulnerabilities/dismiss_spec.rb

@@ -11,17 +11,17 @@ RSpec.describe Mutations::Vulnerabilities::Dismiss do
     let_it_be(:user) { create(:user) }
     let_it_be(:vulnerability_id) { GitlabSchema.id_from_object(vulnerability).to_s }
 
-    let(:comment) { 'Dismissal Feedbacl' }
+    let(:comment) { 'Dismissal Feedback' }
     let(:mutated_vulnerability) { subject[:vulnerability] }
 
-    subject { mutation.resolve(id: vulnerability_id, comment: comment) }
+    subject { mutation.resolve(id: vulnerability_id, comment: comment, dismissal_reason: 'used_in_tests') }
 
     context 'when the user can dismiss the vulnerability' do
       before do
         stub_licensed_features(security_dashboard: true)
       end
 
-      context 'when user doe not have access to the project' do
+      context 'when user does not have access to the project' do
         it 'raises an error' do
           expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
         end

ee/spec/services/vulnerabilities/dismiss_service_spec.rb

@@ -72,6 +72,19 @@ RSpec.describe Vulnerabilities::DismissService do
       end
     end
 
+    context 'when the dismissal_reason is added' do
+      let(:dismissal_reason) { 'used_in_tests' }
+      let(:service) { described_class.new(user, vulnerability, nil, dismissal_reason) }
+
+      it 'dismisses a vulnerability and its associated findings with comment', :aggregate_failures do
+        dismiss_vulnerability
+
+        expect(vulnerability.reload).to have_attributes(state: 'dismissed', dismissed_by: user)
+        expect(vulnerability.findings).to all have_vulnerability_dismissal_feedback
+        expect(vulnerability.findings.map(&:dismissal_feedback)).to all(have_attributes(dismissal_reason: dismissal_reason))
+      end
+    end
+
     it 'creates note' do
       expect(SystemNoteService).to receive(:change_vulnerability_state).with(vulnerability, user)