debian-mirror-gitlab/spec/models/clusters/applications/prometheus_spec.rb
2019-01-03 12:48:30 +05:30

199 lines
6.2 KiB
Ruby

require 'rails_helper'
describe Clusters::Applications::Prometheus do
include KubernetesHelpers
include_examples 'cluster application core specs', :clusters_applications_prometheus
include_examples 'cluster application status specs', :clusters_applications_prometheus
include_examples 'cluster application helm specs', :clusters_applications_knative
describe '.installed' do
subject { described_class.installed }
let!(:cluster) { create(:clusters_applications_prometheus, :installed) }
before do
create(:clusters_applications_prometheus, :errored)
end
it { is_expected.to contain_exactly(cluster) }
end
describe '#make_installing!' do
before do
application.make_installing!
end
context 'application install previously errored with older version' do
let(:application) { create(:clusters_applications_prometheus, :scheduled, version: '6.7.2') }
it 'updates the application version' do
expect(application.reload.version).to eq('6.7.3')
end
end
end
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 '#ready' do
let(:project) { create(:project) }
let(:cluster) { create(:cluster, projects: [project]) }
it 'returns true when installed' do
application = build(:clusters_applications_prometheus, :installed, cluster: cluster)
expect(application).to be_ready
end
it 'returns false when not_installable' do
application = build(:clusters_applications_prometheus, :not_installable, cluster: cluster)
expect(application).not_to be_ready
end
it 'returns false when installable' do
application = build(:clusters_applications_prometheus, :installable, cluster: cluster)
expect(application).not_to be_ready
end
it 'returns false when scheduled' do
application = build(:clusters_applications_prometheus, :scheduled, cluster: cluster)
expect(application).not_to be_ready
end
it 'returns false when installing' do
application = build(:clusters_applications_prometheus, :installing, cluster: cluster)
expect(application).not_to be_ready
end
it 'returns false when errored' do
application = build(:clusters_applications_prometheus, :errored, cluster: cluster)
expect(application).not_to be_ready
end
end
describe '#prometheus_client' do
context 'cluster is nil' do
it 'returns nil' do
expect(subject.cluster).to be_nil
expect(subject.prometheus_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.prometheus_client).to be_nil
end
end
context 'cluster has kubeclient' do
let(:cluster) { create(:cluster, :project, :provided_by_gcp) }
let(:kubernetes_url) { subject.cluster.platform_kubernetes.api_url }
let(:kube_client) { subject.cluster.kubeclient.core_client }
subject { create(:clusters_applications_prometheus, cluster: cluster) }
before do
subject.cluster.platform_kubernetes.namespace = 'a-namespace'
stub_kubeclient_discover(cluster.platform_kubernetes.api_url)
create(:cluster_kubernetes_namespace,
cluster: cluster,
cluster_project: cluster.cluster_project,
project: cluster.cluster_project.project)
end
it 'creates proxy prometheus rest client' do
expect(subject.prometheus_client).to be_instance_of(RestClient::Resource)
end
it 'creates proper url' do
expect(subject.prometheus_client.url).to eq("#{kubernetes_url}/api/v1/namespaces/gitlab-managed-apps/services/prometheus-prometheus-server:80/proxy")
end
it 'copies options and headers from kube client to proxy client' do
expect(subject.prometheus_client.options).to eq(kube_client.rest_client.options.merge(headers: kube_client.headers))
end
context 'when cluster is not reachable' do
before do
allow(kube_client).to receive(:proxy_url).and_raise(Kubeclient::HttpError.new(401, 'Unauthorized', nil))
end
it 'returns nil' do
expect(subject.prometheus_client).to be_nil
end
end
end
end
describe '#install_command' do
let(:prometheus) { create(:clusters_applications_prometheus) }
subject { prometheus.install_command }
it { is_expected.to be_an_instance_of(Gitlab::Kubernetes::Helm::InstallCommand) }
it 'should be initialized with 3 arguments' do
expect(subject.name).to eq('prometheus')
expect(subject.chart).to eq('stable/prometheus')
expect(subject.version).to eq('6.7.3')
expect(subject).not_to be_rbac
expect(subject.files).to eq(prometheus.files)
end
context 'on a rbac enabled cluster' do
before do
prometheus.cluster.platform_kubernetes.rbac!
end
it { is_expected.to be_rbac }
end
context 'application failed to install previously' do
let(:prometheus) { create(:clusters_applications_prometheus, :errored, version: '2.0.0') }
it 'should be initialized with the locked version' do
expect(subject.version).to eq('6.7.3')
end
end
end
describe '#files' do
let(:application) { create(:clusters_applications_prometheus) }
let(:values) { subject[:'values.yaml'] }
subject { application.files }
it 'should include prometheus valid values' do
expect(values).to include('alertmanager')
expect(values).to include('kubeStateMetrics')
expect(values).to include('nodeExporter')
expect(values).to include('pushgateway')
expect(values).to include('serverFiles')
end
end
end