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require 'active_support/cache'
require 'flipper/adapters/operation_logger'
require 'flipper/adapters/active_support_cache_store'
RSpec.describe Flipper::Adapters::ActiveSupportCacheStore do
let(:memory_adapter) do
Flipper::Adapters::OperationLogger.new(Flipper::Adapters::Memory.new)
end
let(:cache) { ActiveSupport::Cache::MemoryStore.new }
let(:write_through) { false }
let(:adapter) { described_class.new(memory_adapter, cache, expires_in: 10.seconds, write_through: write_through) }
let(:flipper) { Flipper.new(adapter) }
subject { adapter }
before do
cache.clear
end
it_should_behave_like 'a flipper adapter'
describe '#remove' do
let(:feature) { flipper[:stats] }
before do
adapter.get(feature)
adapter.remove(feature)
end
it 'expires feature and deletes the cache' do
expect(cache.read(described_class.key_for(feature))).to be_nil
expect(cache.exist?(described_class.key_for(feature))).to be(false)
expect(feature).not_to be_enabled
end
context 'with write-through caching' do
let(:write_through) { true }
it 'expires feature and writes an empty value to the cache' do
expect(cache.read(described_class.key_for(feature))).to eq(adapter.default_config)
expect(cache.exist?(described_class.key_for(feature))).to be(true)
expect(feature).not_to be_enabled
end
end
end
describe '#enable' do
let(:feature) { flipper[:stats] }
before do
adapter.enable(feature, feature.gate(:boolean), flipper.boolean)
end
it 'enables feature and deletes the cache' do
expect(cache.read(described_class.key_for(feature))).to be_nil
expect(cache.exist?(described_class.key_for(feature))).to be(false)
expect(feature).to be_enabled
end
context 'with write-through caching' do
let(:write_through) { true }
it 'expires feature and writes to the cache' do
expect(cache.exist?(described_class.key_for(feature))).to be(true)
expect(cache.read(described_class.key_for(feature))).to include(boolean: 'true')
expect(feature).to be_enabled
end
end
end
describe '#disable' do
let(:feature) { flipper[:stats] }
before do
adapter.disable(feature, feature.gate(:boolean), flipper.boolean)
end
it 'disables feature and deletes the cache' do
expect(cache.read(described_class.key_for(feature))).to be_nil
expect(cache.exist?(described_class.key_for(feature))).to be(false)
expect(feature).not_to be_enabled
end
context 'with write-through caching' do
let(:write_through) { true }
it 'expires feature and writes to the cache' do
expect(cache.exist?(described_class.key_for(feature))).to be(true)
expect(cache.read(described_class.key_for(feature))).to include(boolean: nil)
expect(feature).not_to be_enabled
end
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.read(described_class.key_for(search))).to be(nil)
expect(cache.read(described_class.key_for(other))).to be(nil)
adapter.get_multi([stats, search, other])
expect(cache.read(described_class.key_for(search))[:boolean]).to eq('true')
expect(cache.read(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.read(described_class.key_for(stats))[:boolean]).to eq('true')
expect(cache.read(described_class.key_for(search))[:boolean]).to be(nil)
expect(cache.read(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 active_support_cache_store' do
expect(subject.name).to be(:active_support_cache_store)
end
end
end
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