1 files changed, 84 insertions, 0 deletions

diff --git a/spec/graphql/mutations/issues/link_alerts_spec.rb b/spec/graphql/mutations/issues/link_alerts_spec.rb
new file mode 100644
index 00000000000..a6ce5cdd7ab
--- /dev/null
+++ b/spec/graphql/mutations/issues/link_alerts_spec.rb
@@ -0,0 +1,84 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Issues::LinkAlerts, feature_category: :incident_management do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:guest) { create(:user) }
+  let_it_be(:developer) { create(:user) }
+  let_it_be(:issue) { create(:incident, project: project) }
+  let_it_be(:alert1) { create(:alert_management_alert, project: project) }
+  let_it_be(:alert2) { create(:alert_management_alert, project: project) }
+
+  let(:mutation) { described_class.new(object: nil, context: { current_user: user }, field: nil) }
+
+  specify { expect(described_class).to require_graphql_authorizations(:update_issue, :admin_issue) }
+
+  before_all do
+    project.add_guest(guest)
+    project.add_developer(developer)
+  end
+
+  describe '#resolve' do
+    let(:alert_references) { [alert1.to_reference, alert2.details_url, 'invalid-reference'] }
+
+    subject(:resolve) do
+      mutation.resolve(
+        project_path: issue.project.full_path,
+        iid: issue.iid,
+        alert_references: alert_references
+      )
+    end
+
+    context 'when the user is a guest' do
+      let(:user) { guest }
+
+      it 'raises an error' do
+        expect { resolve }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+
+      context 'when a user is also an author' do
+        let!(:issue) { create(:incident, project: project, author: user) }
+
+        it 'raises an error' do
+          expect { resolve }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+        end
+      end
+
+      context 'when a user is also an assignee' do
+        let!(:issue) { create(:incident, project: project, assignee_ids: [user.id]) }
+
+        it 'raises an error' do
+          expect { resolve }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+        end
+      end
+    end
+
+    context 'when the user is a developer' do
+      let(:user) { developer }
+
+      context 'when issue type is an incident' do
+        it 'calls LinkAlerts::CreateService with correct arguments' do
+          expect(::IncidentManagement::LinkAlerts::CreateService)
+            .to receive(:new)
+            .with(issue, user, alert_references)
+            .and_call_original
+
+          resolve
+        end
+
+        it 'returns no errors' do
+          expect(resolve[:errors]).to be_empty
+        end
+      end
+
+      context 'when issue type is not an incident' do
+        let!(:issue) { create(:issue, project: project) }
+
+        it 'does not update alert_management_alerts' do
+          expect { resolve }.not_to change { issue.alert_management_alerts }
+        end
+      end
+    end
+  end
+end