1 files changed, 0 insertions, 150 deletions
diff --git a/spec/lib/gitlab/metrics/sampler_spec.rb b/spec/lib/gitlab/metrics/sampler_spec.rb
deleted file mode 100644
index 1ab923b58cf..00000000000
--- a/spec/lib/gitlab/metrics/sampler_spec.rb
+++ /dev/null
@@ -1,150 +0,0 @@
-require 'spec_helper'
-
-describe Gitlab::Metrics::Sampler do
-  let(:sampler) { described_class.new(5) }
-
-  after do
-    Allocations.stop if Gitlab::Metrics.mri?
-  end
-
-  describe '#start' do
-    it 'gathers a sample at a given interval' do
-      expect(sampler).to receive(:sleep).with(a_kind_of(Numeric))
-      expect(sampler).to receive(:sample)
-      expect(sampler).to receive(:loop).and_yield
-
-      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(:sample_objects)
-      expect(sampler).to receive(:sample_gc)
-      expect(sampler).to receive(:flush)
-
-      sampler.sample
-    end
-
-    it 'clears any GC profiles' do
-      expect(sampler).to receive(:flush)
-      expect(GC::Profiler).to receive(:clear)
-
-      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
-
-  if Gitlab::Metrics.mri?
-    describe '#sample_objects' do
-      it 'adds a metric containing the amount of allocated objects' do
-        expect(sampler).to receive(:add_metric).
-          with(/object_counts/, an_instance_of(Hash), an_instance_of(Hash)).
-          at_least(:once).
-          and_call_original
-
-        sampler.sample_objects
-      end
-
-      it 'ignores classes without a name' do
-        expect(Allocations).to receive(:to_hash).and_return({ Class.new => 4 })
-
-        expect(sampler).not_to receive(:add_metric).
-          with('object_counts', an_instance_of(Hash), type: nil)
-
-        sampler.sample_objects
-      end
-    end
-  end
-
-  describe '#sample_gc' do
-    it 'adds a metric containing garbage collection statistics' do
-      expect(GC::Profiler).to receive(:total_time).and_return(0.24)
-
-      expect(sampler).to receive(:add_metric).
-        with(/gc_statistics/, an_instance_of(Hash)).
-        and_call_original
-
-      sampler.sample_gc
-    end
-  end
-
-  describe '#add_metric' do
-    it 'prefixes the series name for a Rails process' do
-      expect(sampler).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(sampler).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