    it "with Pathname command and params" do
      cl = subject.build(Pathname.new("/usr/bin/ruby"), "-v" => nil)
      expect(cl).to eq "/usr/bin/ruby -v"
    end
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.