269 lines
8.3 KiB
Ruby
269 lines
8.3 KiB
Ruby
require 'spec_helper'
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describe Feature do
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before do
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# We mock all calls to .enabled? to return true in order to force all
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# specs to run the feature flag gated behavior, but here we need a clean
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# behavior from the class
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allow(described_class).to receive(:enabled?).and_call_original
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end
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describe '.get' do
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let(:feature) { double(:feature) }
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let(:key) { 'my_feature' }
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it 'returns the Flipper feature' do
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expect_any_instance_of(Flipper::DSL).to receive(:feature).with(key)
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.and_return(feature)
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expect(described_class.get(key)).to be(feature)
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end
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end
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describe '.persisted_names' do
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it 'returns the names of the persisted features' do
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Feature::FlipperFeature.create!(key: 'foo')
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expect(described_class.persisted_names).to eq(%w[foo])
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end
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it 'returns an empty Array when no features are presisted' do
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expect(described_class.persisted_names).to be_empty
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end
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it 'caches the feature names when request store is active',
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:request_store, :use_clean_rails_memory_store_caching do
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Feature::FlipperFeature.create!(key: 'foo')
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expect(Feature::FlipperFeature)
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.to receive(:feature_names)
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.once
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.and_call_original
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expect(Gitlab::ThreadMemoryCache.cache_backend)
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.to receive(:fetch)
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.once
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.with('flipper:persisted_names', expires_in: 1.minute)
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.and_call_original
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2.times do
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expect(described_class.persisted_names).to eq(%w[foo])
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end
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end
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end
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describe '.persisted?' do
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context 'when the feature is persisted' do
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it 'returns true when feature name is a string' do
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Feature::FlipperFeature.create!(key: 'foo')
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feature = double(:feature, name: 'foo')
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expect(described_class.persisted?(feature)).to eq(true)
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end
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it 'returns true when feature name is a symbol' do
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Feature::FlipperFeature.create!(key: 'foo')
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feature = double(:feature, name: :foo)
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expect(described_class.persisted?(feature)).to eq(true)
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end
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end
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context 'when the feature is not persisted' do
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it 'returns false when feature name is a string' do
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feature = double(:feature, name: 'foo')
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expect(described_class.persisted?(feature)).to eq(false)
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end
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it 'returns false when feature name is a symbol' do
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feature = double(:feature, name: :bar)
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expect(described_class.persisted?(feature)).to eq(false)
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end
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end
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end
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describe '.all' do
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let(:features) { Set.new }
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it 'returns the Flipper features as an array' do
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expect_any_instance_of(Flipper::DSL).to receive(:features)
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.and_return(features)
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expect(described_class.all).to eq(features.to_a)
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end
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end
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describe '.flipper' do
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before do
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described_class.instance_variable_set(:@flipper, nil)
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end
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context 'when request store is inactive' do
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it 'memoizes the Flipper instance' do
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expect(Flipper).to receive(:new).once.and_call_original
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2.times do
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described_class.flipper
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end
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end
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end
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context 'when request store is active', :request_store do
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it 'memoizes the Flipper instance' do
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expect(Flipper).to receive(:new).once.and_call_original
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described_class.flipper
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described_class.instance_variable_set(:@flipper, nil)
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described_class.flipper
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end
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end
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end
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describe '.enabled?' do
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it 'returns false for undefined feature' do
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expect(described_class.enabled?(:some_random_feature_flag)).to be_falsey
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end
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it 'returns true for undefined feature with default_enabled' do
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expect(described_class.enabled?(:some_random_feature_flag, default_enabled: true)).to be_truthy
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end
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it 'returns false for existing disabled feature in the database' do
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described_class.disable(:disabled_feature_flag)
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expect(described_class.enabled?(:disabled_feature_flag)).to be_falsey
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end
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it 'returns true for existing enabled feature in the database' do
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described_class.enable(:enabled_feature_flag)
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expect(described_class.enabled?(:enabled_feature_flag)).to be_truthy
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end
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it { expect(described_class.l1_cache_backend).to eq(Gitlab::ThreadMemoryCache.cache_backend) }
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it { expect(described_class.l2_cache_backend).to eq(Rails.cache) }
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it 'caches the status in L1 and L2 caches',
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:request_store, :use_clean_rails_memory_store_caching do
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described_class.enable(:enabled_feature_flag)
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flipper_key = "flipper/v1/feature/enabled_feature_flag"
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expect(described_class.l2_cache_backend)
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.to receive(:fetch)
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.once
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.with(flipper_key, expires_in: 1.hour)
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.and_call_original
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expect(described_class.l1_cache_backend)
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.to receive(:fetch)
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.once
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.with(flipper_key, expires_in: 1.minute)
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.and_call_original
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2.times do
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expect(described_class.enabled?(:enabled_feature_flag)).to be_truthy
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end
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end
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context 'cached feature flag', :request_store do
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let(:flag) { :some_feature_flag }
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before do
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described_class.flipper.memoize = false
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described_class.enabled?(flag)
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end
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it 'caches the status in L1 cache for the first minute' do
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expect do
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expect(described_class.l1_cache_backend).to receive(:fetch).once.and_call_original
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expect(described_class.l2_cache_backend).not_to receive(:fetch)
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expect(described_class.enabled?(flag)).to be_truthy
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end.not_to exceed_query_limit(0)
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end
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it 'caches the status in L2 cache after 2 minutes' do
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Timecop.travel 2.minutes do
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expect do
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expect(described_class.l1_cache_backend).to receive(:fetch).once.and_call_original
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expect(described_class.l2_cache_backend).to receive(:fetch).once.and_call_original
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expect(described_class.enabled?(flag)).to be_truthy
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end.not_to exceed_query_limit(0)
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end
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end
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it 'fetches the status after an hour' do
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Timecop.travel 61.minutes do
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expect do
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expect(described_class.l1_cache_backend).to receive(:fetch).once.and_call_original
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expect(described_class.l2_cache_backend).to receive(:fetch).once.and_call_original
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expect(described_class.enabled?(flag)).to be_truthy
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end.not_to exceed_query_limit(1)
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end
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end
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end
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context 'with an individual actor' do
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CustomActor = Struct.new(:flipper_id)
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let(:actor) { CustomActor.new(flipper_id: 'CustomActor:5') }
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let(:another_actor) { CustomActor.new(flipper_id: 'CustomActor:10') }
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before do
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described_class.enable(:enabled_feature_flag, actor)
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end
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it 'returns true when same actor is informed' do
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expect(described_class.enabled?(:enabled_feature_flag, actor)).to be_truthy
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end
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it 'returns false when different actor is informed' do
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expect(described_class.enabled?(:enabled_feature_flag, another_actor)).to be_falsey
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end
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it 'returns false when no actor is informed' do
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expect(described_class.enabled?(:enabled_feature_flag)).to be_falsey
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end
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end
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end
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describe '.disable?' do
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it 'returns true for undefined feature' do
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expect(described_class.disabled?(:some_random_feature_flag)).to be_truthy
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end
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it 'returns false for undefined feature with default_enabled' do
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expect(described_class.disabled?(:some_random_feature_flag, default_enabled: true)).to be_falsey
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end
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it 'returns true for existing disabled feature in the database' do
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described_class.disable(:disabled_feature_flag)
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expect(described_class.disabled?(:disabled_feature_flag)).to be_truthy
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end
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it 'returns false for existing enabled feature in the database' do
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described_class.enable(:enabled_feature_flag)
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expect(described_class.disabled?(:enabled_feature_flag)).to be_falsey
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end
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end
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describe Feature::Target do
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describe '#targets' do
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let(:project) { create(:project) }
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let(:group) { create(:group) }
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let(:user_name) { project.owner.username }
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subject { described_class.new(user: user_name, project: project.full_path, group: group.full_path) }
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it 'returns all found targets' do
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expect(subject.targets).to be_an(Array)
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expect(subject.targets).to eq([project.owner, project, group])
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end
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end
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end
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end
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