Include CI_HAS_OPEN_REQUIREMENTS variable

This can be used to dynamically add a CI job for setting requirements
test reports.

doc/ci/variables/predefined_variables.md

@@ -58,6 +58,7 @@ You can add a command to your `.gitlab-ci.yml` file to
 | `CI_EXTERNAL_PULL_REQUEST_SOURCE_BRANCH_SHA`  | 12.3   | all    | The HEAD SHA of the source branch of the pull request if [the pipelines are for external pull requests](../ci_cd_for_external_repos/index.md#pipelines-for-external-pull-requests). Available only if `only: [external_pull_requests]` or [`rules`](../yaml/README.md#rules) syntax is used and the pull request is open.                                                                               |
 | `CI_EXTERNAL_PULL_REQUEST_TARGET_BRANCH_NAME` | 12.3   | all    | The target branch name of the pull request if [the pipelines are for external pull requests](../ci_cd_for_external_repos/index.md#pipelines-for-external-pull-requests). Available only if `only: [external_pull_requests]` or [`rules`](../yaml/README.md#rules) syntax is used and the pull request is open.                                                                                          |
 | `CI_EXTERNAL_PULL_REQUEST_TARGET_BRANCH_SHA`  | 12.3   | all    | The HEAD SHA of the target branch of the pull request if [the pipelines are for external pull requests](../ci_cd_for_external_repos/index.md#pipelines-for-external-pull-requests). Available only if `only: [external_pull_requests]` or [`rules`](../yaml/README.md#rules) syntax is used and the pull request is open.                                                                               |
+| `CI_HAS_OPEN_REQUIREMENTS`                    | 13.1   | all    | Included with the value `true` only if the pipeline's project has any open [requirements](../../user/project/requirements/index.md). Not included if there are no open requirements for the pipeline's project.                                                                                                                                                                                        |
 | `CI_JOB_ID`                                   | 9.0    | all    | The unique ID of the current job that GitLab CI/CD uses internally                                                                                                                                                                                                                                                                                            |
 | `CI_JOB_IMAGE`                                | 12.9   | 12.9   | The name of the image running the CI job                                                                                                                                                                                                                                                                                                                   |
 | `CI_JOB_MANUAL`                               | 8.12   | all    | The flag to indicate that job was manually started                                                                                                                                                                                                                                                                                                         |

ee/app/models/ee/project.rb

@@ -714,6 +714,11 @@ module EE
       feature_available?(:jira_dev_panel_integration) && JiraConnectSubscription.for_project(self).exists?
     end
 
+    override :predefined_variables
+    def predefined_variables
+      super.concat(requirements_ci_variables)
+    end
+
     private
 
     def group_hooks
@@ -767,6 +772,14 @@ module EE
         approval_rules.regular_or_any_approver.order(rule_type: :desc, id: :asc)
       end
     end
+
+    def requirements_ci_variables
+      ::Gitlab::Ci::Variables::Collection.new.tap do |variables|
+        if requirements.opened.any?
+          variables.append(key: 'CI_HAS_OPEN_REQUIREMENTS', value: 'true')
+        end
+      end
+    end
   end
 end
 

ee/changelogs/unreleased/requirements_ci_var.yml

+---
+title: Added CI_HAS_OPEN_REQUIREMENTS environment variable.
+merge_request: 34419
+author:
+type: changed

ee/spec/models/ci/build_spec.rb

@@ -137,6 +137,23 @@ RSpec.describe Ci::Build do
         end
       end
     end
+
+    describe 'variable CI_HAS_OPEN_REQUIREMENTS' do
+      it "is included with value 'true' if there are open requirements" do
+        create(:requirement, project: project)
+
+        expect(subject).to include({ key: 'CI_HAS_OPEN_REQUIREMENTS',
+                                     value: 'true', public: true, masked: false })
+      end
+
+      it 'is not included if there are no open requirements' do
+        create(:requirement, project: project, state: :archived)
+
+        requirement_variable = subject.find { |var| var[:key] == 'CI_HAS_OPEN_REQUIREMENTS' }
+
+        expect(requirement_variable).to be_nil
+      end
+    end
   end
 
   describe '#collect_security_reports!' do

spec/models/ci/build_spec.rb

@@ -2407,13 +2407,13 @@ describe Ci::Build do
             allow(build).to receive(:job_jwt_variables) { [job_jwt_var] }
             allow(build).to receive(:dependency_variables) { [job_dependency_var] }
 
-            allow_any_instance_of(Project)
+            allow(build.project)
               .to receive(:predefined_variables) { [project_pre_var] }
 
             project.variables.create!(key: 'secret', value: 'value')
 
-            allow_any_instance_of(Ci::Pipeline)
-              .to receive(:predefined_variables) { [pipeline_pre_var] }
+            allow(build.pipeline)
+              .to receive(:predefined_variables).and_return([pipeline_pre_var])
           end
 
           it 'returns variables in order depending on resource hierarchy' do