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require 'flipper/registry'
RSpec.describe Flipper::Registry do
subject { described_class.new(source) }
let(:source) { {} }
describe '#add' do
it 'adds to source' do
value = 'thing'
subject.add(:admins, value)
expect(source[:admins]).to eq(value)
end
it 'converts key to symbol' do
value = 'thing'
subject.add('admins', value)
expect(source[:admins]).to eq(value)
end
it 'raises exception if key already registered' do
subject.add(:admins, 'thing')
expect do
subject.add('admins', 'again')
end.to raise_error(Flipper::Registry::DuplicateKey)
end
end
describe '#get' do
context 'key registered' do
before do
source[:admins] = 'thing'
end
it 'returns value' do
expect(subject.get(:admins)).to eq('thing')
end
it 'returns value if given string key' do
expect(subject.get('admins')).to eq('thing')
end
end
context 'key not registered' do
it 'returns nil' do
expect(subject.get(:admins)).to be(nil)
end
end
end
describe '#key?' do
before do
source[:admins] = 'admins'
end
it 'returns true if the key exists' do
expect(subject.key?(:admins)).to eq true
end
it 'returns false if the key does not exists' do
expect(subject.key?(:unknown_key)).to eq false
end
end
describe '#each' do
before do
source[:admins] = 'admins'
source[:devs] = 'devs'
end
it 'iterates source keys and values' do
results = {}
subject.each do |key, value|
results[key] = value
end
expect(results).to eq(admins: 'admins',
devs: 'devs')
end
end
describe '#keys' do
before do
source[:admins] = 'admins'
source[:devs] = 'devs'
end
it 'returns the keys' do
expect(subject.keys.map(&:to_s).sort).to eq(%w(admins devs))
end
it 'returns the keys as symbols' do
subject.keys.each do |key|
expect(key).to be_instance_of(Symbol)
end
end
end
describe '#values' do
before do
source[:admins] = 'admins'
source[:devs] = 'devs'
end
it 'returns the values' do
expect(subject.values.map(&:to_s).sort).to eq(%w(admins devs))
end
end
describe 'enumeration' do
before do
source[:admins] = 'admins'
source[:devs] = 'devs'
end
it 'works' do
keys = []
values = []
subject.map do |key, value|
keys << key
values << value
end
expect(keys.map(&:to_s).sort).to eq(%w(admins devs))
expect(values.sort).to eq(%w(admins devs))
end
end
describe '#clear' do
before do
source[:admins] = 'admins'
end
it 'clears the source' do
subject.clear
expect(source).to be_empty
end
end
end
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