126 lines
3.4 KiB
Ruby
126 lines
3.4 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Metrics::MethodCall do
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let(:transaction) { Gitlab::Metrics::WebTransaction.new({}) }
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let(:method_call) { described_class.new('Foo#bar', :Foo, '#bar', transaction) }
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describe '#measure' do
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after do
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::Gitlab::Metrics::Transaction.reload_metric!(:gitlab_method_call_duration_seconds)
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end
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it 'measures the performance of the supplied block' do
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method_call.measure { 'foo' }
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expect(method_call.real_time).to be_a_kind_of(Numeric)
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expect(method_call.cpu_time).to be_a_kind_of(Numeric)
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expect(method_call.call_count).to eq(1)
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end
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context 'when measurement is above threshold' do
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before do
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allow(method_call).to receive(:above_threshold?).and_return(true)
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end
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around do |example|
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freeze_time do
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example.run
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end
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end
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it 'metric is not a NullMetric' do
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method_call.measure { 'foo' }
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expect(::Gitlab::Metrics::WebTransaction.prometheus_metric(:gitlab_method_call_duration_seconds, :histogram)).not_to be_instance_of(Gitlab::Metrics::NullMetric)
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end
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it 'observes the performance of the supplied block' do
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expect(transaction)
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.to receive(:observe).with(:gitlab_method_call_duration_seconds, be_a_kind_of(Numeric), { method: "#bar", module: :Foo })
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method_call.measure { 'foo' }
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end
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end
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context 'when measurement is below threshold' do
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before do
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allow(method_call).to receive(:above_threshold?).and_return(false)
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end
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it 'does not observe the performance' do
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expect(transaction)
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.not_to receive(:observe)
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.with(:gitlab_method_call_duration_seconds, be_a_kind_of(Numeric))
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method_call.measure { 'foo' }
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end
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end
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end
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describe '#above_threshold?' do
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before do
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allow(Gitlab::Metrics).to receive(:method_call_threshold).and_return(100)
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end
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it 'returns false when the total call time is not above the threshold' do
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expect(method_call).to receive(:real_time).and_return(0.009)
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expect(method_call.above_threshold?).to eq(false)
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end
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it 'returns true when the total call time is above the threshold' do
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expect(method_call).to receive(:real_time).and_return(9)
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expect(method_call.above_threshold?).to eq(true)
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end
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end
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describe '#call_count' do
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context 'without any method calls' do
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it 'returns 0' do
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expect(method_call.call_count).to eq(0)
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end
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end
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context 'with method calls' do
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it 'returns the number of method calls' do
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method_call.measure { 'foo' }
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expect(method_call.call_count).to eq(1)
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end
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end
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end
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describe '#cpu_time' do
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context 'without timings' do
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it 'returns 0.0' do
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expect(method_call.cpu_time).to eq(0.0)
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end
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end
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context 'with timings' do
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it 'returns the total CPU time' do
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method_call.measure { 'foo' }
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expect(method_call.cpu_time >= 0.0).to be(true)
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end
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end
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end
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describe '#real_time' do
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context 'without timings' do
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it 'returns 0.0' do
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expect(method_call.real_time).to eq(0.0)
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end
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end
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context 'with timings' do
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it 'returns the total real time' do
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method_call.measure { 'foo' }
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expect(method_call.real_time >= 0.0).to be(true)
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end
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end
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end
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end
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