219 lines
6.3 KiB
Ruby
219 lines
6.3 KiB
Ruby
require 'spec_helper'
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describe KubernetesService, models: true, caching: true do
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include KubernetesHelpers
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include ReactiveCachingHelpers
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let(:project) { create(:kubernetes_project) }
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let(:service) { project.kubernetes_service }
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# We use Kubeclient to interactive with the Kubernetes API. It will
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# GET /api/v1 for a list of resources the API supports. This must be stubbed
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# in addition to any other HTTP requests we expect it to perform.
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let(:discovery_url) { service.api_url + '/api/v1' }
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let(:discovery_response) { { body: kube_discovery_body.to_json } }
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let(:pods_url) { service.api_url + "/api/v1/namespaces/#{service.namespace}/pods" }
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let(:pods_response) { { body: kube_pods_body(kube_pod).to_json } }
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def stub_kubeclient_discover
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WebMock.stub_request(:get, discovery_url).to_return(discovery_response)
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end
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def stub_kubeclient_pods
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stub_kubeclient_discover
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WebMock.stub_request(:get, pods_url).to_return(pods_response)
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end
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describe "Associations" do
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it { is_expected.to belong_to :project }
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end
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describe 'Validations' do
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context 'when service is active' do
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before { subject.active = true }
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it { is_expected.to validate_presence_of(:namespace) }
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it { is_expected.to validate_presence_of(:api_url) }
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it { is_expected.to validate_presence_of(:token) }
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context 'namespace format' do
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before do
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subject.project = project
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subject.api_url = "http://example.com"
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subject.token = "test"
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end
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{
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'foo' => true,
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'1foo' => true,
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'foo1' => true,
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'foo-bar' => true,
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'-foo' => false,
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'foo-' => false,
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'a' * 63 => true,
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'a' * 64 => false,
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'a.b' => false,
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'a*b' => false,
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}.each do |namespace, validity|
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it "should validate #{namespace} as #{validity ? 'valid' : 'invalid'}" do
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subject.namespace = namespace
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expect(subject.valid?).to eq(validity)
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end
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end
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end
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end
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context 'when service is inactive' do
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before { subject.active = false }
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it { is_expected.not_to validate_presence_of(:namespace) }
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it { is_expected.not_to validate_presence_of(:api_url) }
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it { is_expected.not_to validate_presence_of(:token) }
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end
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end
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describe '#initialize_properties' do
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context 'with a project' do
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it 'defaults to the project name' do
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expect(described_class.new(project: project).namespace).to eq(project.name)
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end
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end
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context 'without a project' do
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it 'leaves the namespace unset' do
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expect(described_class.new.namespace).to be_nil
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end
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end
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end
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describe '#test' do
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before do
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stub_kubeclient_discover
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end
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context 'with path prefix in api_url' do
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let(:discovery_url) { 'https://kubernetes.example.com/prefix/api/v1' }
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it 'tests with the prefix' do
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service.api_url = 'https://kubernetes.example.com/prefix/'
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expect(service.test[:success]).to be_truthy
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expect(WebMock).to have_requested(:get, discovery_url).once
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end
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end
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context 'with custom CA certificate' do
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it 'is added to the certificate store' do
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service.ca_pem = "CA PEM DATA"
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cert = double("certificate")
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expect(OpenSSL::X509::Certificate).to receive(:new).with(service.ca_pem).and_return(cert)
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expect_any_instance_of(OpenSSL::X509::Store).to receive(:add_cert).with(cert)
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expect(service.test[:success]).to be_truthy
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expect(WebMock).to have_requested(:get, discovery_url).once
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end
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end
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context 'success' do
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it 'reads the discovery endpoint' do
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expect(service.test[:success]).to be_truthy
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expect(WebMock).to have_requested(:get, discovery_url).once
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end
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end
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context 'failure' do
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let(:discovery_response) { { status: 404 } }
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it 'fails to read the discovery endpoint' do
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expect(service.test[:success]).to be_falsy
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expect(WebMock).to have_requested(:get, discovery_url).once
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end
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end
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end
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describe '#predefined_variables' do
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before do
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subject.api_url = 'https://kube.domain.com'
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subject.token = 'token'
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subject.namespace = 'my-project'
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subject.ca_pem = 'CA PEM DATA'
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end
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it 'sets KUBE_URL' do
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expect(subject.predefined_variables).to include(
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{ key: 'KUBE_URL', value: 'https://kube.domain.com', public: true }
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)
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end
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it 'sets KUBE_TOKEN' do
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expect(subject.predefined_variables).to include(
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{ key: 'KUBE_TOKEN', value: 'token', public: false }
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)
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end
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it 'sets KUBE_NAMESPACE' do
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expect(subject.predefined_variables).to include(
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{ key: 'KUBE_NAMESPACE', value: 'my-project', public: true }
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)
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end
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it 'sets KUBE_CA_PEM' do
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expect(subject.predefined_variables).to include(
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{ key: 'KUBE_CA_PEM', value: 'CA PEM DATA', public: true }
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)
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end
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end
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describe '#terminals' do
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let(:environment) { build(:environment, project: project, name: "env", slug: "env-000000") }
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subject { service.terminals(environment) }
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context 'with invalid pods' do
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it 'returns no terminals' do
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stub_reactive_cache(service, pods: [ { "bad" => "pod" } ])
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is_expected.to be_empty
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end
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end
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context 'with valid pods' do
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let(:pod) { kube_pod(app: environment.slug) }
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let(:terminals) { kube_terminals(service, pod) }
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it 'returns terminals' do
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stub_reactive_cache(service, pods: [ pod, pod, kube_pod(app: "should-be-filtered-out") ])
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is_expected.to eq(terminals + terminals)
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end
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end
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end
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describe '#calculate_reactive_cache' do
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before { stub_kubeclient_pods }
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subject { service.calculate_reactive_cache }
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context 'when service is inactive' do
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before { service.active = false }
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it { is_expected.to be_nil }
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end
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context 'when kubernetes responds with valid pods' do
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it { is_expected.to eq(pods: [kube_pod]) }
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end
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context 'when kubernetes responds with 500' do
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let(:pods_response) { { status: 500 } }
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it { expect { subject }.to raise_error(KubeException) }
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end
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context 'when kubernetes responds with 404' do
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let(:pods_response) { { status: 404 } }
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it { is_expected.to eq(pods: []) }
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end
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end
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end
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