diff options
Diffstat (limited to 'spec/lib/gitlab/usage/metrics/instrumentations/database_metric_spec.rb')
-rw-r--r-- | spec/lib/gitlab/usage/metrics/instrumentations/database_metric_spec.rb | 68 |
1 files changed, 54 insertions, 14 deletions
diff --git a/spec/lib/gitlab/usage/metrics/instrumentations/database_metric_spec.rb b/spec/lib/gitlab/usage/metrics/instrumentations/database_metric_spec.rb index 5e36820df5e..0a32bdb95d3 100644 --- a/spec/lib/gitlab/usage/metrics/instrumentations/database_metric_spec.rb +++ b/spec/lib/gitlab/usage/metrics/instrumentations/database_metric_spec.rb @@ -4,11 +4,11 @@ require 'spec_helper' RSpec.describe Gitlab::Usage::Metrics::Instrumentations::DatabaseMetric do subject do - described_class.tap do |m| - m.relation { Issue } - m.operation :count - m.start { m.relation.minimum(:id) } - m.finish { m.relation.maximum(:id) } + described_class.tap do |metric_class| + metric_class.relation { Issue } + metric_class.operation :count + metric_class.start { metric_class.relation.minimum(:id) } + metric_class.finish { metric_class.relation.maximum(:id) } end.new(time_frame: 'all') end @@ -38,9 +38,9 @@ RSpec.describe Gitlab::Usage::Metrics::Instrumentations::DatabaseMetric do context 'with start and finish not called' do subject do - described_class.tap do |m| - m.relation { Issue } - m.operation :count + described_class.tap do |metric_class| + metric_class.relation { Issue } + metric_class.operation :count end.new(time_frame: 'all') end @@ -51,12 +51,12 @@ RSpec.describe Gitlab::Usage::Metrics::Instrumentations::DatabaseMetric do context 'with cache_start_and_finish_as called' do subject do - described_class.tap do |m| - m.relation { Issue } - m.operation :count - m.start { m.relation.minimum(:id) } - m.finish { m.relation.maximum(:id) } - m.cache_start_and_finish_as :special_issue_count + described_class.tap do |metric_class| + metric_class.relation { Issue } + metric_class.operation :count + metric_class.start { metric_class.relation.minimum(:id) } + metric_class.finish { metric_class.relation.maximum(:id) } + metric_class.cache_start_and_finish_as :special_issue_count end.new(time_frame: 'all') end @@ -71,5 +71,45 @@ RSpec.describe Gitlab::Usage::Metrics::Instrumentations::DatabaseMetric do expect(Rails.cache.read('metric_instrumentation/special_issue_count_maximum_id')).to eq(issues.max_by(&:id).id) end end + + context 'with estimate_batch_distinct_count' do + subject do + described_class.tap do |metric_class| + metric_class.relation { Issue } + metric_class.operation(:estimate_batch_distinct_count) + metric_class.start { metric_class.relation.minimum(:id) } + metric_class.finish { metric_class.relation.maximum(:id) } + end.new(time_frame: 'all') + end + + it 'calculates a correct result' do + expect(subject.value).to be_within(Gitlab::Database::PostgresHll::BatchDistinctCounter::ERROR_RATE).percent_of(3) + end + + context 'with block passed to operation' do + let(:buckets) { double('Buckets').as_null_object } + + subject do + described_class.tap do |metric_class| + metric_class.relation { Issue } + metric_class.operation(:estimate_batch_distinct_count) do |result| + result.foo + end + metric_class.start { metric_class.relation.minimum(:id) } + metric_class.finish { metric_class.relation.maximum(:id) } + end.new(time_frame: 'all') + end + + before do + allow(Gitlab::Database::PostgresHll::Buckets).to receive(:new).and_return(buckets) + end + + it 'calls the block passing HLL buckets as an argument' do + expect(buckets).to receive(:foo) + + subject.value + end + end + end end end |