require 'rails_helper' describe Clusters::Applications::Prometheus do it { is_expected.to belong_to(:cluster) } it { is_expected.to validate_presence_of(:cluster) } include_examples 'cluster application specs', described_class describe 'transition to installed' do let(:project) { create(:project) } let(:cluster) { create(:cluster, projects: [project]) } let(:prometheus_service) { double('prometheus_service') } subject { create(:clusters_applications_prometheus, :installing, cluster: cluster) } before do allow(project).to receive(:find_or_initialize_service).with('prometheus').and_return prometheus_service end it 'ensures Prometheus service is activated' do expect(prometheus_service).to receive(:update).with(active: true) subject.make_installed end end describe "#chart_values_file" do subject { create(:clusters_applications_prometheus).chart_values_file } it 'should return chart values file path' do expect(subject).to eq("#{Rails.root}/vendor/prometheus/values.yaml") end end describe '#proxy_client' do context 'cluster is nil' do it 'returns nil' do expect(subject.cluster).to be_nil expect(subject.proxy_client).to be_nil end end context "cluster doesn't have kubeclient" do let(:cluster) { create(:cluster) } subject { create(:clusters_applications_prometheus, cluster: cluster) } it 'returns nil' do expect(subject.proxy_client).to be_nil end end context 'cluster has kubeclient' do let(:kubernetes_url) { 'http://example.com' } let(:k8s_discover_response) do { resources: [ { name: 'service', kind: 'Service' } ] } end let(:kube_client) { Kubeclient::Client.new(kubernetes_url) } let(:cluster) { create(:cluster) } subject { create(:clusters_applications_prometheus, cluster: cluster) } before do allow(kube_client.rest_client).to receive(:get).and_return(k8s_discover_response.to_json) allow(subject.cluster).to receive(:kubeclient).and_return(kube_client) end it 'creates proxy prometheus rest client' do expect(subject.proxy_client).to be_instance_of(RestClient::Resource) end it 'creates proper url' do expect(subject.proxy_client.url).to eq('http://example.com/api/v1/proxy/namespaces/gitlab-managed-apps/service/prometheus-prometheus-server:80') end it 'copies options and headers from kube client to proxy client' do expect(subject.proxy_client.options).to eq(kube_client.rest_client.options.merge(headers: kube_client.headers)) end end end end