diff options
Diffstat (limited to 'spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb')
-rw-r--r-- | spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb b/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb deleted file mode 100644 index 939c057c342..00000000000 --- a/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb +++ /dev/null @@ -1,105 +0,0 @@ -# frozen_string_literal: true - -require 'spec_helper' - -describe Gitlab::Metrics::Samplers::InfluxSampler do - let(:sampler) { described_class.new(5) } - - describe '#start' do - it 'runs once and gathers a sample at a given interval' do - expect(sampler).to receive(:sleep).with(a_kind_of(Numeric)).twice - expect(sampler).to receive(:sample).once - expect(sampler).to receive(:running).and_return(true, false) - - sampler.start.join - end - end - - describe '#sample' do - it 'samples various statistics' do - expect(sampler).to receive(:sample_memory_usage) - expect(sampler).to receive(:sample_file_descriptors) - expect(sampler).to receive(:flush) - - sampler.sample - end - end - - describe '#flush' do - it 'schedules the metrics using Sidekiq' do - expect(Gitlab::Metrics).to receive(:submit_metrics) - .with([an_instance_of(Hash)]) - - sampler.sample_memory_usage - sampler.flush - end - end - - describe '#sample_memory_usage' do - it 'adds a metric containing the memory usage' do - expect(Gitlab::Metrics::System).to receive(:memory_usage) - .and_return(9000) - - expect(sampler).to receive(:add_metric) - .with(/memory_usage/, value: 9000) - .and_call_original - - sampler.sample_memory_usage - end - end - - describe '#sample_file_descriptors' do - it 'adds a metric containing the amount of open file descriptors' do - expect(Gitlab::Metrics::System).to receive(:file_descriptor_count) - .and_return(4) - - expect(sampler).to receive(:add_metric) - .with(/file_descriptors/, value: 4) - .and_call_original - - sampler.sample_file_descriptors - end - end - - describe '#add_metric' do - it 'prefixes the series name for a Rails process' do - expect(Gitlab::Runtime).to receive(:sidekiq?).and_return(false) - - expect(Gitlab::Metrics::Metric).to receive(:new) - .with('rails_cats', { value: 10 }, {}) - .and_call_original - - sampler.add_metric('cats', value: 10) - end - - it 'prefixes the series name for a Sidekiq process' do - expect(Gitlab::Runtime).to receive(:sidekiq?).and_return(true) - - expect(Gitlab::Metrics::Metric).to receive(:new) - .with('sidekiq_cats', { value: 10 }, {}) - .and_call_original - - sampler.add_metric('cats', value: 10) - end - end - - describe '#sleep_interval' do - it 'returns a Numeric' do - expect(sampler.sleep_interval).to be_a_kind_of(Numeric) - end - - # Testing random behaviour is very hard, so treat this test as a basic smoke - # test instead of a very accurate behaviour/unit test. - it 'does not return the same interval twice in a row' do - last = nil - - 100.times do - interval = sampler.sleep_interval - - expect(interval).not_to eq(last) - - last = interval - end - end - end -end |