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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::BackgroundMigration::BatchMetrics do
let(:batch_metrics) { described_class.new }
describe '#time_operation' do
it 'tracks the duration of the operation using monotonic time' do
expect(batch_metrics.timings).to be_empty
expect(Gitlab::Metrics::System).to receive(:monotonic_time)
.and_return(0.0, 111.0, 200.0, 290.0, 300.0, 410.0)
batch_metrics.time_operation(:my_label) do
# some operation
end
batch_metrics.time_operation(:my_other_label) do
# some operation
end
batch_metrics.time_operation(:my_label) do
# some operation
end
expect(batch_metrics.timings).to eq(my_label: [111.0, 110.0], my_other_label: [90.0])
end
end
describe '#instrument_operation' do
it 'tracks duration and affected rows' do
expect(batch_metrics.timings).to be_empty
expect(batch_metrics.affected_rows).to be_empty
expect(Gitlab::Metrics::System).to receive(:monotonic_time)
.and_return(0.0, 111.0, 200.0, 290.0, 300.0, 410.0, 420.0, 450.0)
batch_metrics.instrument_operation(:my_label) do
3
end
batch_metrics.instrument_operation(:my_other_label) do
42
end
batch_metrics.instrument_operation(:my_label) do
2
end
batch_metrics.instrument_operation(:my_other_label) do
:not_an_integer
end
expect(batch_metrics.timings).to eq(my_label: [111.0, 110.0], my_other_label: [90.0, 30.0])
expect(batch_metrics.affected_rows).to eq(my_label: [3, 2], my_other_label: [42])
end
end
end
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