1 files changed, 50 insertions, 0 deletions
diff --git a/spec/requests/admin/version_check_controller_spec.rb b/spec/requests/admin/version_check_controller_spec.rb
new file mode 100644
index 00000000000..7e2f33d5bc5
--- /dev/null
+++ b/spec/requests/admin/version_check_controller_spec.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Admin::VersionCheckController, :enable_admin_mode do
+  let(:admin) { create(:admin) }
+
+  before do
+    sign_in(admin)
+  end
+
+  describe 'GET #version_check' do
+    context 'when VersionCheck.response is nil' do
+      before do
+        allow_next_instance_of(VersionCheck) do |instance|
+          allow(instance).to receive(:response).and_return(nil)
+        end
+        get admin_version_check_path
+      end
+
+      it 'returns nil' do
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(json_response).to be_nil
+      end
+
+      it 'sets no-cache headers' do
+        expect(response.headers['Cache-Control']).to eq('max-age=0, private, must-revalidate')
+      end
+    end
+
+    context 'when VersionCheck.response is valid' do
+      before do
+        allow_next_instance_of(VersionCheck) do |instance|
+          allow(instance).to receive(:response).and_return({ "severity" => "success" })
+        end
+
+        get admin_version_check_path
+      end
+
+      it 'returns the valid data' do
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(json_response).to eq({ "severity" => "success" })
+      end
+
+      it 'sets proper cache headers' do
+        expect(response.headers['Cache-Control']).to eq('max-age=60, private')
+      end
+    end
+  end
+end