1 files changed, 19 insertions, 0 deletions
diff --git a/spec/workers/clusters/applications/check_prometheus_health_worker_spec.rb b/spec/workers/clusters/applications/check_prometheus_health_worker_spec.rb
new file mode 100644
index 00000000000..a09b9ec4165
--- /dev/null
+++ b/spec/workers/clusters/applications/check_prometheus_health_worker_spec.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Clusters::Applications::CheckPrometheusHealthWorker, '#perform' do
+  subject { described_class.new.perform }
+
+  it 'triggers health service' do
+    cluster = create(:cluster)
+    allow(Gitlab::Monitor::DemoProjects).to receive(:primary_keys)
+    allow(Clusters::Cluster).to receive_message_chain(:with_application_prometheus, :with_project_alert_service_data).and_return([cluster])
+
+    service_instance = instance_double(Clusters::Applications::PrometheusHealthCheckService)
+    expect(Clusters::Applications::PrometheusHealthCheckService).to receive(:new).with(cluster).and_return(service_instance)
+    expect(service_instance).to receive(:execute)
+
+    subject
+  end
+end