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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Prometheus::Adapter do
let_it_be(:project) { create(:project) }
let_it_be(:cluster, reload: true) { create(:cluster, :provided_by_user, environment_scope: '*', projects: [project]) }
subject { described_class.new(project, cluster) }
describe '#prometheus_adapter' do
context 'prometheus service can execute queries' do
let(:prometheus_service) { double(:prometheus_service, can_query?: true) }
before do
allow(project).to receive(:find_or_initialize_service).with('prometheus').and_return prometheus_service
end
it 'return prometheus service as prometheus adapter' do
expect(subject.prometheus_adapter).to eq(prometheus_service)
end
context 'with cluster with prometheus available' do
let!(:prometheus) { create(:clusters_applications_prometheus, :installed, cluster: cluster) }
it 'returns prometheus service' do
expect(subject.prometheus_adapter).to eq(prometheus_service)
end
end
end
context "prometheus service can't execute queries" do
let(:prometheus_service) { double(:prometheus_service, can_query?: false) }
context 'with cluster with prometheus integration' do
let!(:prometheus_integration) { create(:clusters_integrations_prometheus, cluster: cluster) }
it 'returns the integration' do
expect(subject.prometheus_adapter).to eq(prometheus_integration)
end
end
context 'with cluster with prometheus not available' do
let!(:prometheus) { create(:clusters_applications_prometheus, :installable, cluster: cluster) }
it 'returns nil' do
expect(subject.prometheus_adapter).to be_nil
end
end
context 'with cluster with prometheus available' do
let!(:prometheus) { create(:clusters_applications_prometheus, :installed, cluster: cluster) }
it 'returns application handling all environments' do
expect(subject.prometheus_adapter).to eq(prometheus)
end
context 'with cluster with prometheus integration' do
let!(:prometheus_integration) { create(:clusters_integrations_prometheus, cluster: cluster) }
it 'returns the integration instead' do
expect(subject.prometheus_adapter).to eq(prometheus_integration)
end
end
end
context 'with cluster without prometheus installed' do
it 'returns nil' do
expect(subject.prometheus_adapter).to be_nil
end
end
end
end
end
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