require 'rack/lint' require 'rack/mock' require 'rack/nulllogger' describe Rack::NullLogger do should "act as a noop logger" do app = lambda { |env| env['rack.logger'].warn "b00m" [200, {'Content-Type' => 'text/plain'}, ["Hello, World!"]] } logger = Rack::Lint.new(Rack::NullLogger.new(app)) res = logger.call(Rack::MockRequest.env_for) res[0..1].should.equal [ 200, {'Content-Type' => 'text/plain'} ] res[2].to_enum.to_a.should.equal ["Hello, World!"] end end