require 'spec_helper' describe Gitlab::ExclusiveLease, :clean_gitlab_redis_shared_state do let(:unique_key) { SecureRandom.hex(10) } describe '#try_obtain' do it 'cannot obtain twice before the lease has expired' do lease = described_class.new(unique_key, timeout: 3600) expect(lease.try_obtain).to be_present expect(lease.try_obtain).to eq(false) end it 'can obtain after the lease has expired' do timeout = 1 lease = described_class.new(unique_key, timeout: timeout) lease.try_obtain # start the lease sleep(2 * timeout) # lease should have expired now expect(lease.try_obtain).to be_present end end describe '#renew' do it 'returns true when we have the existing lease' do lease = described_class.new(unique_key, timeout: 3600) expect(lease.try_obtain).to be_present expect(lease.renew).to be_truthy end it 'returns false when we dont have a lease' do lease = described_class.new(unique_key, timeout: 3600) expect(lease.renew).to be_falsey end end describe '#exists?' do it 'returns true for an existing lease' do lease = described_class.new(unique_key, timeout: 3600) lease.try_obtain expect(lease.exists?).to eq(true) end it 'returns false for a lease that does not exist' do lease = described_class.new(unique_key, timeout: 3600) expect(lease.exists?).to eq(false) end end describe '.cancel' do it 'can cancel a lease' do uuid = new_lease(unique_key) expect(uuid).to be_present expect(new_lease(unique_key)).to eq(false) described_class.cancel(unique_key, uuid) expect(new_lease(unique_key)).to be_present end def new_lease(key) described_class.new(key, timeout: 3600).try_obtain end end end