56 lines
2.0 KiB
Ruby
56 lines
2.0 KiB
Ruby
require 'rails_helper'
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describe PortPool do
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describe '.available_port' do
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it 'is synchronized' do
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expect(described_class.instance_variable_get(:@mutex)).to receive(:synchronize)
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described_class.available_port
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end
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context 'when a port is available' do
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it 'returns the port' do
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expect(described_class.available_port).to be_a(Numeric)
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end
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it 'removes the port from the list of available ports' do
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port = described_class.available_port
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expect(described_class.instance_variable_get(:@available_ports)).not_to include(port)
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end
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end
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context 'when no port is available' do
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it 'returns the port' do
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available_ports = described_class.instance_variable_get(:@available_ports)
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described_class.instance_variable_set(:@available_ports, [])
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expect(described_class.available_port).to be nil
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described_class.instance_variable_set(:@available_ports, available_ports)
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end
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end
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end
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describe '.release' do
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context 'when the port has been obtained earlier' do
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it 'adds the port to the list of available ports' do
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port = described_class.available_port
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expect(described_class.instance_variable_get(:@available_ports)).not_to include(port)
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described_class.release(port)
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expect(described_class.instance_variable_get(:@available_ports)).to include(port)
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end
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end
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context 'when the port has not been obtained earlier' do
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it 'does not add the port to the list of available ports' do
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port = described_class.instance_variable_get(:@available_ports).sample
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expect { described_class.release(port) }.not_to change { described_class.instance_variable_get(:@available_ports).length }
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end
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end
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context 'when the port is not included in the port range' do
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it 'does not add the port to the list of available ports' do
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port = nil
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expect { described_class.release(port) }.not_to change { described_class.instance_variable_get(:@available_ports).length }
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end
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end
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end
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end
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