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require 'spec_helper'
describe Feature do
describe '.get' do
let(:feature) { double(:feature) }
let(:key) { 'my_feature' }
it 'returns the Flipper feature' do
expect_any_instance_of(Flipper::DSL).to receive(:feature).with(key)
.and_return(feature)
expect(described_class.get(key)).to be(feature)
end
end
describe '.persisted_names' do
it 'returns the names of the persisted features' do
Feature::FlipperFeature.create!(key: 'foo')
expect(described_class.persisted_names).to eq(%w[foo])
end
it 'returns an empty Array when no features are presisted' do
expect(described_class.persisted_names).to be_empty
end
it 'caches the feature names when request store is active', :request_store do
Feature::FlipperFeature.create!(key: 'foo')
expect(Feature::FlipperFeature)
.to receive(:feature_names)
.once
.and_call_original
2.times do
expect(described_class.persisted_names).to eq(%w[foo])
end
end
end
describe '.persisted?' do
it 'returns true for a persisted feature' do
Feature::FlipperFeature.create!(key: 'foo')
feature = double(:feature, name: 'foo')
expect(described_class.persisted?(feature)).to eq(true)
end
it 'returns false for a feature that is not persisted' do
feature = double(:feature, name: 'foo')
expect(described_class.persisted?(feature)).to eq(false)
end
end
describe '.all' do
let(:features) { Set.new }
it 'returns the Flipper features as an array' do
expect_any_instance_of(Flipper::DSL).to receive(:features)
.and_return(features)
expect(described_class.all).to eq(features.to_a)
end
end
describe '.flipper' do
shared_examples 'a memoized Flipper instance' do
it 'memoizes the Flipper instance' do
expect(Flipper).to receive(:new).once.and_call_original
2.times do
described_class.flipper
end
end
end
context 'when request store is inactive' do
before do
described_class.instance_variable_set(:@flipper, nil)
end
it_behaves_like 'a memoized Flipper instance'
end
context 'when request store is inactive', :request_store do
it_behaves_like 'a memoized Flipper instance'
end
end
end
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