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require 'flipper/adapters/operation_logger'
require 'flipper/adapters/dalli'
require 'logger'
RSpec.describe Flipper::Adapters::Dalli do
let(:memory_adapter) do
Flipper::Adapters::OperationLogger.new(Flipper::Adapters::Memory.new)
end
let(:cache) { Dalli::Client.new(ENV['MEMCACHED_URL']) }
let(:adapter) { described_class.new(memory_adapter, cache) }
let(:flipper) { Flipper.new(adapter) }
subject { adapter }
before do
Dalli.logger = Logger.new('/dev/null')
begin
cache.flush
rescue Dalli::NetworkError
ENV['CI'] ? raise : skip('Memcached not available')
end
end
it_should_behave_like 'a flipper adapter'
describe '#remove' do
it 'expires feature' do
feature = flipper[:stats]
adapter.get(feature)
adapter.remove(feature)
expect(cache.get(described_class.key_for(feature))).to be(nil)
end
end
describe '#get_multi' do
it 'warms uncached features' do
stats = flipper[:stats]
search = flipper[:search]
other = flipper[:other]
stats.enable
search.enable
memory_adapter.reset
adapter.get(stats)
expect(cache.get(described_class.key_for(search))).to be(nil)
expect(cache.get(described_class.key_for(other))).to be(nil)
adapter.get_multi([stats, search, other])
expect(cache.get(described_class.key_for(search))[:boolean]).to eq('true')
expect(cache.get(described_class.key_for(other))[:boolean]).to be(nil)
adapter.get_multi([stats, search, other])
adapter.get_multi([stats, search, other])
expect(memory_adapter.count(:get_multi)).to eq(1)
end
end
describe '#get_all' do
let(:stats) { flipper[:stats] }
let(:search) { flipper[:search] }
before do
stats.enable
search.add
end
it 'warms all features' do
adapter.get_all
expect(cache.get(described_class.key_for(stats))[:boolean]).to eq('true')
expect(cache.get(described_class.key_for(search))[:boolean]).to be(nil)
expect(cache.get(described_class::GetAllKey)).to be_within(2).of(Time.now.to_i)
end
it 'returns same result when already cached' do
expect(adapter.get_all).to eq(adapter.get_all)
end
it 'only invokes one call to wrapped adapter' do
memory_adapter.reset
5.times { adapter.get_all }
expect(memory_adapter.count(:get_all)).to eq(1)
end
end
describe '#name' do
it 'is dalli' do
expect(subject.name).to be(:dalli)
end
end
end
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