debian-mirror-gitlab/spec/lib/gitlab/sherlock/line_profiler_spec.rb

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require 'spec_helper'
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describe Gitlab::Sherlock::LineProfiler, lib: true do
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let(:profiler) { described_class.new }
describe '#profile' do
it 'runs the profiler when using MRI' do
allow(profiler).to receive(:mri?).and_return(true)
allow(profiler).to receive(:profile_mri)
profiler.profile { 'cats' }
end
it 'raises NotImplementedError when profiling an unsupported platform' do
allow(profiler).to receive(:mri?).and_return(false)
expect { profiler.profile { 'cats' } }.to raise_error(NotImplementedError)
end
end
describe '#profile_mri' do
it 'returns an Array containing the return value and profiling samples' do
allow(profiler).to receive(:lineprof).
and_yield.
and_return({ __FILE__ => [[0, 0, 0, 0]] })
retval, samples = profiler.profile_mri { 42 }
expect(retval).to eq(42)
expect(samples).to eq([])
end
end
describe '#aggregate_rblineprof' do
let(:raw_samples) do
{ __FILE__ => [[30000, 30000, 5, 0], [15000, 15000, 4, 0]] }
end
it 'returns an Array of FileSample objects' do
samples = profiler.aggregate_rblineprof(raw_samples)
expect(samples).to be_an_instance_of(Array)
expect(samples[0]).to be_an_instance_of(Gitlab::Sherlock::FileSample)
end
describe 'the first FileSample object' do
let(:file_sample) do
profiler.aggregate_rblineprof(raw_samples)[0]
end
it 'uses the correct file path' do
expect(file_sample.file).to eq(__FILE__)
end
it 'contains a list of line samples' do
line_sample = file_sample.line_samples[0]
expect(line_sample).to be_an_instance_of(Gitlab::Sherlock::LineSample)
expect(line_sample.duration).to eq(15.0)
expect(line_sample.events).to eq(4)
end
it 'contains the total file execution time' do
expect(file_sample.duration).to eq(30.0)
end
it 'contains the total amount of file events' do
expect(file_sample.events).to eq(5)
end
end
end
end