139 lines
4 KiB
Ruby
139 lines
4 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Consul::Internal do
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let(:api_url) { 'http://127.0.0.1:8500' }
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let(:consul_settings) do
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{
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api_url: api_url
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}
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end
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before do
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stub_config(consul: consul_settings)
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end
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describe '.api_url' do
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it 'returns correct value' do
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expect(described_class.api_url).to eq(api_url)
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end
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context 'when consul setting is not present in gitlab.yml' do
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before do
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allow(Gitlab.config).to receive(:consul).and_raise(Settingslogic::MissingSetting)
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end
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it 'does not fail' do
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expect(described_class.api_url).to be_nil
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end
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end
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end
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shared_examples 'handles failure response' do
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it 'raises Gitlab::Consul::Internal::SocketError when SocketError is rescued' do
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stub_consul_discover_prometheus.to_raise(::SocketError)
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expect { subject }
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.to raise_error(described_class::SocketError)
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end
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it 'raises Gitlab::Consul::Internal::SSLError when OpenSSL::SSL::SSLError is rescued' do
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stub_consul_discover_prometheus.to_raise(OpenSSL::SSL::SSLError)
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expect { subject }
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.to raise_error(described_class::SSLError)
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end
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it 'raises Gitlab::Consul::Internal::ECONNREFUSED when Errno::ECONNREFUSED is rescued' do
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stub_consul_discover_prometheus.to_raise(Errno::ECONNREFUSED)
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expect { subject }
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.to raise_error(described_class::ECONNREFUSED)
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end
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it 'raises Consul::Internal::UnexpectedResponseError when StandardError is rescued' do
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stub_consul_discover_prometheus.to_raise(StandardError)
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expect { subject }
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.to raise_error(described_class::UnexpectedResponseError)
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end
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it 'raises Consul::Internal::UnexpectedResponseError when request returns 500' do
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stub_consul_discover_prometheus.to_return(status: 500, body: '{ message: "FAIL!" }')
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expect { subject }
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.to raise_error(described_class::UnexpectedResponseError)
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end
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it 'raises Consul::Internal::UnexpectedResponseError when request returns non json data' do
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stub_consul_discover_prometheus.to_return(status: 200, body: 'not json')
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expect { subject }
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.to raise_error(described_class::UnexpectedResponseError)
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end
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end
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shared_examples 'returns nil given blank value of' do |input_symbol|
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[nil, ''].each do |value|
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let(input_symbol) { value }
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it { is_expected.to be_nil }
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end
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end
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describe '.discover_service' do
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subject { described_class.discover_service(service_name: service_name) }
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let(:service_name) { 'prometheus' }
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it_behaves_like 'returns nil given blank value of', :api_url
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it_behaves_like 'returns nil given blank value of', :service_name
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context 'one service discovered' do
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before do
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stub_consul_discover_prometheus.to_return(status: 200, body: '[{"ServiceAddress":"prom.net","ServicePort":9090}]')
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end
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it 'returns the service address and port' do
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is_expected.to eq(["prom.net", 9090])
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end
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end
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context 'multiple services discovered' do
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before do
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stub_consul_discover_prometheus
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.to_return(status: 200, body: '[{"ServiceAddress":"prom_1.net","ServicePort":9090},{"ServiceAddress":"prom.net","ServicePort":9090}]')
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end
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it 'uses the first service' do
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is_expected.to eq(["prom_1.net", 9090])
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end
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end
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it_behaves_like 'handles failure response'
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end
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describe '.discover_prometheus_server_address' do
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subject { described_class.discover_prometheus_server_address }
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before do
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stub_consul_discover_prometheus
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.to_return(status: 200, body: '[{"ServiceAddress":"prom.net","ServicePort":9090}]')
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end
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it 'returns the server address' do
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is_expected.to eq('prom.net:9090')
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end
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it_behaves_like 'returns nil given blank value of', :api_url
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it_behaves_like 'handles failure response'
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end
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def stub_consul_discover_prometheus
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stub_request(:get, %r{v1/catalog/service/prometheus})
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end
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end
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