require 'spec_helper' describe Gitlab::Metrics::Delta do let(:delta) { described_class.new } describe '#compared_with' do it 'returns the delta as a Numeric' do expect(delta.compared_with(5)).to eq(5) end it 'bases the delta on a previously used value' do expect(delta.compared_with(5)).to eq(5) expect(delta.compared_with(15)).to eq(10) end end end