require 'spec_helper' describe Gitlab::Ci::Pipeline::Duration do let(:calculated_duration) { calculate(data) } shared_examples 'calculating duration' do it do expect(calculated_duration).to eq(duration) end end context 'test sample A' do let(:data) do [[0, 1], [1, 2], [3, 4], [5, 6]] end let(:duration) { 4 } it_behaves_like 'calculating duration' end context 'test sample B' do let(:data) do [[0, 1], [1, 2], [2, 3], [3, 4], [0, 4]] end let(:duration) { 4 } it_behaves_like 'calculating duration' end context 'test sample C' do let(:data) do [[0, 4], [2, 6], [5, 7], [8, 9]] end let(:duration) { 8 } it_behaves_like 'calculating duration' end context 'test sample D' do let(:data) do [[0, 1], [2, 3], [4, 5], [6, 7]] end let(:duration) { 4 } it_behaves_like 'calculating duration' end context 'test sample E' do let(:data) do [[0, 1], [3, 9], [3, 4], [3, 5], [3, 8], [4, 5], [4, 7], [5, 8]] end let(:duration) { 7 } it_behaves_like 'calculating duration' end context 'test sample F' do let(:data) do [[1, 3], [2, 4], [2, 4], [2, 4], [5, 8]] end let(:duration) { 6 } it_behaves_like 'calculating duration' end context 'test sample G' do let(:data) do [[1, 3], [2, 4], [6, 7]] end let(:duration) { 4 } it_behaves_like 'calculating duration' end def calculate(data) periods = data.shuffle.map do |(first, last)| described_class::Period.new(first, last) end described_class.from_periods(periods.sort_by(&:first)) end end