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|
require 'spec_helper'
describe Feature do
before do
# We mock all calls to .enabled? to return true in order to force all
# specs to run the feature flag gated behavior, but here we need a clean
# behavior from the class
allow(described_class).to receive(:enabled?).and_call_original
end
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
context 'when the feature is persisted' do
it 'returns true when feature name is a string' do
Feature::FlipperFeature.create!(key: 'foo')
feature = double(:feature, name: 'foo')
expect(described_class.persisted?(feature)).to eq(true)
end
it 'returns true when feature name is a symbol' do
Feature::FlipperFeature.create!(key: 'foo')
feature = double(:feature, name: :foo)
expect(described_class.persisted?(feature)).to eq(true)
end
end
context 'when the feature is not persisted' do
it 'returns false when feature name is a string' do
feature = double(:feature, name: 'foo')
expect(described_class.persisted?(feature)).to eq(false)
end
it 'returns false when feature name is a symbol' do
feature = double(:feature, name: :bar)
expect(described_class.persisted?(feature)).to eq(false)
end
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
before do
described_class.instance_variable_set(:@flipper, nil)
end
context 'when request store is inactive' 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 active', :request_store do
it 'memoizes the Flipper instance' do
expect(Flipper).to receive(:new).once.and_call_original
described_class.flipper
described_class.instance_variable_set(:@flipper, nil)
described_class.flipper
end
end
end
describe '.enabled?' do
it 'returns false for undefined feature' do
expect(described_class.enabled?(:some_random_feature_flag)).to be_falsey
end
it 'returns true for undefined feature with default_enabled' do
expect(described_class.enabled?(:some_random_feature_flag, default_enabled: true)).to be_truthy
end
it 'returns false for existing disabled feature in the database' do
described_class.disable(:disabled_feature_flag)
expect(described_class.enabled?(:disabled_feature_flag)).to be_falsey
end
it 'returns true for existing enabled feature in the database' do
described_class.enable(:enabled_feature_flag)
expect(described_class.enabled?(:enabled_feature_flag)).to be_truthy
end
context 'with an individual actor' do
CustomActor = Struct.new(:flipper_id)
let(:actor) { CustomActor.new(flipper_id: 'CustomActor:5') }
let(:another_actor) { CustomActor.new(flipper_id: 'CustomActor:10') }
before do
described_class.enable(:enabled_feature_flag, actor)
end
it 'returns true when same actor is informed' do
expect(described_class.enabled?(:enabled_feature_flag, actor)).to be_truthy
end
it 'returns false when different actor is informed' do
expect(described_class.enabled?(:enabled_feature_flag, another_actor)).to be_falsey
end
it 'returns false when no actor is informed' do
expect(described_class.enabled?(:enabled_feature_flag)).to be_falsey
end
end
end
describe '.disable?' do
it 'returns true for undefined feature' do
expect(described_class.disabled?(:some_random_feature_flag)).to be_truthy
end
it 'returns false for undefined feature with default_enabled' do
expect(described_class.disabled?(:some_random_feature_flag, default_enabled: true)).to be_falsey
end
it 'returns true for existing disabled feature in the database' do
described_class.disable(:disabled_feature_flag)
expect(described_class.disabled?(:disabled_feature_flag)).to be_truthy
end
it 'returns false for existing enabled feature in the database' do
described_class.enable(:enabled_feature_flag)
expect(described_class.disabled?(:enabled_feature_flag)).to be_falsey
end
end
end
|
