require 'spec_helper' describe Gitlab::Metrics::MethodCall do let(:method_call) { described_class.new('Foo#bar', 'foo') } describe '#measure' do it 'measures the performance of the supplied block' do method_call.measure { 'foo' } expect(method_call.real_time).to be_a_kind_of(Numeric) expect(method_call.cpu_time).to be_a_kind_of(Numeric) expect(method_call.call_count).to eq(1) end end describe '#to_metric' do it 'returns a Metric instance' do method_call.measure { 'foo' } metric = method_call.to_metric expect(metric).to be_an_instance_of(Gitlab::Metrics::Metric) expect(metric.series).to eq('foo') expect(metric.values[:duration]).to be_a_kind_of(Numeric) expect(metric.values[:cpu_duration]).to be_a_kind_of(Numeric) expect(metric.values[:call_count]).to be_an(Integer) expect(metric.tags).to eq({ method: 'Foo#bar' }) end end describe '#above_threshold?' do it 'returns false when the total call time is not above the threshold' do expect(method_call.above_threshold?).to eq(false) end it 'returns true when the total call time is above the threshold' do expect(method_call).to receive(:real_time).and_return(9000) expect(method_call.above_threshold?).to eq(true) end end describe '#call_count' do context 'without any method calls' do it 'returns 0' do expect(method_call.call_count).to eq(0) end end context 'with method calls' do it 'returns the number of method calls' do method_call.measure { 'foo' } expect(method_call.call_count).to eq(1) end end end describe '#cpu_time' do context 'without timings' do it 'returns 0.0' do expect(method_call.cpu_time).to eq(0.0) end end context 'with timings' do it 'returns the total CPU time' do method_call.measure { 'foo' } expect(method_call.cpu_time >= 0.0).to be(true) end end end describe '#real_time' do context 'without timings' do it 'returns 0.0' do expect(method_call.real_time).to eq(0.0) end end context 'with timings' do it 'returns the total real time' do method_call.measure { 'foo' } expect(method_call.real_time >= 0.0).to be(true) end end end end