127 lines
3.9 KiB
Ruby
127 lines
3.9 KiB
Ruby
# frozen_string_literal: true
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# rubocop:disable Style/RedundantFetchBlock
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#
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require 'spec_helper'
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RSpec.describe ProtectedBranches::CacheService, :clean_gitlab_redis_cache do
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subject(:service) { described_class.new(project, user) }
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let_it_be(:project) { create(:project) }
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let_it_be(:user) { project.first_owner }
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let(:immediate_expiration) { 0 }
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describe '#fetch' do
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it 'caches the value' do
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expect(service.fetch('main') { true }).to eq(true)
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expect(service.fetch('not-found') { false }).to eq(false)
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# Uses cached values
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expect(service.fetch('main') { false }).to eq(true)
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expect(service.fetch('not-found') { true }).to eq(false)
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end
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it 'sets expiry on the key' do
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stub_const("#{described_class.name}::CACHE_EXPIRE_IN", immediate_expiration)
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expect(service.fetch('main') { true }).to eq(true)
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expect(service.fetch('not-found') { false }).to eq(false)
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expect(service.fetch('main') { false }).to eq(false)
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expect(service.fetch('not-found') { true }).to eq(true)
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end
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it 'does not set an expiry on the key after the hash is already created' do
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expect(service.fetch('main') { true }).to eq(true)
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stub_const("#{described_class.name}::CACHE_EXPIRE_IN", immediate_expiration)
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expect(service.fetch('not-found') { false }).to eq(false)
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expect(service.fetch('main') { false }).to eq(true)
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expect(service.fetch('not-found') { true }).to eq(false)
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end
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context 'when CACHE_LIMIT is exceeded' do
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before do
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stub_const("#{described_class.name}::CACHE_LIMIT", 2)
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end
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it 'recreates cache' do
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expect(service.fetch('main') { true }).to eq(true)
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expect(service.fetch('not-found') { false }).to eq(false)
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# Uses cached values
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expect(service.fetch('main') { false }).to eq(true)
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expect(service.fetch('not-found') { true }).to eq(false)
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# Overflow
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expect(service.fetch('new-branch') { true }).to eq(true)
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# Refreshes values
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expect(service.fetch('main') { false }).to eq(false)
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expect(service.fetch('not-found') { true }).to eq(true)
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end
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end
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context 'when dry_run is on' do
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it 'does not use cached value' do
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expect(service.fetch('main', dry_run: true) { true }).to eq(true)
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expect(service.fetch('main', dry_run: true) { false }).to eq(false)
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end
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context 'when cache mismatch' do
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it 'logs an error' do
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expect(service.fetch('main', dry_run: true) { true }).to eq(true)
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expect(Gitlab::AppLogger).to receive(:error).with(
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{
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'class' => described_class.name,
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'message' => /Cache mismatch/,
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'project_id' => project.id,
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'project_path' => project.full_path
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}
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)
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expect(service.fetch('main', dry_run: true) { false }).to eq(false)
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end
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end
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context 'when cache matches' do
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it 'does not log an error' do
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expect(service.fetch('main', dry_run: true) { true }).to eq(true)
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expect(Gitlab::AppLogger).not_to receive(:error)
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expect(service.fetch('main', dry_run: true) { true }).to eq(true)
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end
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end
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end
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end
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describe '#refresh' do
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it 'clears cached values' do
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expect(service.fetch('main') { true }).to eq(true)
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expect(service.fetch('not-found') { false }).to eq(false)
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service.refresh
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# Recreates cache
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expect(service.fetch('main') { false }).to eq(false)
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expect(service.fetch('not-found') { true }).to eq(true)
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end
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end
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describe 'metrics' do
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it 'records hit ratio metrics' do
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expect_next_instance_of(Gitlab::Cache::Metrics) do |metrics|
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expect(metrics).to receive(:increment_cache_miss).once
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expect(metrics).to receive(:increment_cache_hit).exactly(4).times
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end
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5.times { service.fetch('main') { true } }
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end
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end
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end
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# rubocop:enable Style/RedundantFetchBlock
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