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require 'spec_helper'
describe Gitlab::ExclusiveLease, type: :redis 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 '#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
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