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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::RepositorySetCache, :clean_gitlab_redis_repository_cache, feature_category: :source_code_management do
let_it_be(:project) { create(:project) }
let(:repository) { project.repository }
let(:namespace) { "#{repository.full_path}:#{project.id}" }
let(:gitlab_cache_namespace) { Gitlab::Redis::Cache::CACHE_NAMESPACE }
let(:cache) { described_class.new(repository) }
describe '#cache_key' do
subject { cache.cache_key(:foo) }
shared_examples 'cache_key examples' do
it 'includes the namespace' do
is_expected.to eq("#{gitlab_cache_namespace}:foo:#{namespace}:set")
end
context 'with a given namespace' do
let(:extra_namespace) { 'my:data' }
let(:cache) { described_class.new(repository, extra_namespace: extra_namespace) }
it 'includes the full namespace' do
is_expected.to eq("#{gitlab_cache_namespace}:foo:#{namespace}:#{extra_namespace}:set")
end
end
end
describe 'project repository' do
it_behaves_like 'cache_key examples' do
let(:repository) { project.repository }
end
end
describe 'personal snippet repository' do
let_it_be(:personal_snippet) { create(:personal_snippet) }
let(:namespace) { repository.full_path }
it_behaves_like 'cache_key examples' do
let(:repository) { personal_snippet.repository }
end
end
describe 'project snippet repository' do
let_it_be(:project_snippet) { create(:project_snippet, project: project) }
it_behaves_like 'cache_key examples' do
let(:repository) { project_snippet.repository }
end
end
end
describe '#write' do
subject(:write_cache) { cache.write('branch_names', ['main']) }
it 'writes the value to the cache' do
write_cache
cursor, redis_keys = Gitlab::Redis::RepositoryCache.with { |redis| redis.scan(0, match: "*") }
while cursor != "0"
cursor, keys = Gitlab::Redis::RepositoryCache.with { |redis| redis.scan(cursor, match: "*") }
redis_keys << keys
end
expect(redis_keys.flatten).to include("#{gitlab_cache_namespace}:branch_names:#{namespace}:set")
expect(cache.fetch('branch_names')).to contain_exactly('main')
end
it 'sets the expiry of the set' do
write_cache
expect(cache.ttl('branch_names')).to be_within(1).of(cache.expires_in.seconds)
end
end
describe '#expire' do
subject { cache.expire(*keys) }
before do
cache.write(:foo, ['value'])
cache.write(:bar, ['value2'])
end
it 'actually wrote the values' do
expect(cache.read(:foo)).to contain_exactly('value')
expect(cache.read(:bar)).to contain_exactly('value2')
end
context 'single key' do
let(:keys) { %w(foo) }
it { is_expected.to eq(1) }
it 'deletes the given key from the cache' do
subject
expect(cache.read(:foo)).to be_empty
end
end
context 'multiple keys' do
let(:keys) { %w(foo bar) }
it { is_expected.to eq(2) }
it 'deletes the given keys from the cache' do
subject
expect(cache.read(:foo)).to be_empty
expect(cache.read(:bar)).to be_empty
end
end
context 'no keys' do
let(:keys) { [] }
it { is_expected.to eq(0) }
end
context 'when deleting over 1000 keys' do
it 'deletes in batches of 1000' do
Gitlab::Redis::RepositoryCache.with do |redis|
# In a Redis Cluster, we do not want a pipeline to have too many keys
# but in a standalone Redis, multi-key commands can be used.
if ::Gitlab::Redis::ClusterUtil.cluster?(redis)
expect(redis).to receive(:pipelined).at_least(2).and_call_original
else
expect(redis).to receive(:unlink).and_call_original
end
end
cache.expire(*(Array.new(1001) { |i| i }))
end
end
end
describe '#exist?' do
it 'checks whether the key exists' do
expect(cache.exist?(:foo)).to be(false)
cache.write(:foo, ['value'])
expect(cache.exist?(:foo)).to be(true)
end
end
describe '#fetch' do
let(:blk) { -> { ['block value'] } }
subject { cache.fetch(:foo, &blk) }
it 'fetches the key from the cache when filled' do
cache.write(:foo, ['value'])
is_expected.to contain_exactly('value')
end
it 'writes the value of the provided block when empty' do
cache.expire(:foo)
is_expected.to contain_exactly('block value')
expect(cache.read(:foo)).to contain_exactly('block value')
end
end
describe '#search' do
subject do
cache.search(:foo, 'val*') do
%w[value helloworld notvalmatch]
end
end
it 'returns search pattern matches from the key' do
is_expected.to contain_exactly('value')
end
end
describe '#include?' do
it 'checks inclusion in the Redis set' do
cache.write(:foo, ['value'])
expect(cache.include?(:foo, 'value')).to be(true)
expect(cache.include?(:foo, 'bar')).to be(false)
end
end
describe '#try_include?' do
it 'checks existence of the redis set and inclusion' do
expect(cache.try_include?(:foo, 'value')).to eq([false, false])
cache.write(:foo, ['value'])
expect(cache.try_include?(:foo, 'value')).to eq([true, true])
expect(cache.try_include?(:foo, 'bar')).to eq([false, true])
end
end
end
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