require 'spec_helper' include Serverspec::Helper::Cmd describe port(80) do it { should be_listening } its(:command) { should eq 'IsPortListening -portNumber 80' } end describe port('invalid') do it { should_not be_listening } end describe port(80) do it { should be_listening.with("tcp") } its(:command) { should eq "IsPortListening -portNumber 80 -protocol 'tcp'" } end describe port(123) do it { should be_listening.with("udp") } its(:command) { should eq "IsPortListening -portNumber 123 -protocol 'udp'" } end describe port(80) do it { expect { should be_listening.with('not implemented') }.to raise_error(ArgumentError, %r/\A`be_listening` matcher doesn\'t support/) } end