68 lines
2.1 KiB
Ruby
68 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Strategy::RoundRobin, :clean_gitlab_redis_shared_state do
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subject(:round_robin) { described_class.new('_key_', %i[variant1 variant2]) }
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describe "execute" do
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context "when there are 2 variants" do
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it "proves out round robin in selection", :aggregate_failures do
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expect(round_robin.execute).to eq :variant2
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expect(round_robin.execute).to eq :variant1
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expect(round_robin.execute).to eq :variant2
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end
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end
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context "when there are more than 2 variants" do
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subject(:round_robin) { described_class.new('_key_', %i[variant1 variant2 variant3]) }
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it "proves out round robin in selection", :aggregate_failures do
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expect(round_robin.execute).to eq :variant2
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expect(round_robin.execute).to eq :variant3
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expect(round_robin.execute).to eq :variant1
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expect(round_robin.execute).to eq :variant2
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expect(round_robin.execute).to eq :variant3
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expect(round_robin.execute).to eq :variant1
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end
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end
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context "when writing to cache fails" do
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subject(:round_robin) { described_class.new('_key_', []) }
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it "raises an error and logs" do
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allow(Gitlab::Redis::SharedState).to receive(:with).and_raise(Strategy::RoundRobin::CacheError)
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expect(Gitlab::AppLogger).to receive(:warn)
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expect { round_robin.execute }.to raise_error(Strategy::RoundRobin::CacheError)
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end
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end
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end
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describe "#counter_expires_in" do
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it 'displays the expiration time in seconds' do
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round_robin.execute
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expect(round_robin.counter_expires_in).to be_between(0, described_class::COUNTER_EXPIRE_TIME)
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end
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end
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describe '#value' do
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it 'get the count' do
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expect(round_robin.counter_value).to eq(0)
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round_robin.execute
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expect(round_robin.counter_value).to eq(1)
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end
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end
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describe '#reset!' do
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it 'resets the count down to zero' do
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3.times { round_robin.execute }
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expect { round_robin.reset! }.to change { round_robin.counter_value }.from(3).to(0)
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end
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end
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end
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