23 lines
		
	
	
		
			557 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			557 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# frozen_string_literal: true
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require "socket"
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require "formula_free_port"
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RSpec.describe Homebrew::FreePort do
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  include described_class
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  describe "#free_port" do
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    it "returns a free TCP/IP port" do
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      # IANA suggests user port from 1024 to 49151
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      # and dynamic port for 49152 to 65535
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      # http://www.iana.org/assignments/port-numbers
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      min_port = 1024
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      max_port = 65535
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      port = free_port
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      expect(port).to be_between(min_port, max_port)
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      expect { TCPServer.new(port).close }.not_to raise_error
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    end
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  end
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end
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