test_httpresponse.rb test failures

Bắt đầu với test/webrick/test_httpresponse.rb, đặc biệt là sáu bài kiểm thử response splitting đang thất bại và các lệnh gọi refute_match của chúng, sau đó kiểm tra lib/webrick/httpresponse.rb quanh dòng 260 được báo cáo. Chạy bộ kiểm thử với Ruby 2.7.4 và xác định thay đổi nào khiến các bài kiểm thử vượt qua mà không có cảnh báo được báo cáo.

Hi,

Testing the latest release (1.8.1) with Ruby 2.7.4, I see the following test failures:

F
==========================================================================================================
     71:       io.rewind
     72:       res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
     73:       assert_equal '500', res.code
  => 74:       refute_match 'cracked_indicator_for_test', io.string
     75:     end
     76: 
     77:     def test_prevent_response_splitting_headers_lf
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/test/webrick/test_httpresponse.rb:74:in `test_prevent_response_splitting_cookie_headers_cr'
Failure: test_prevent_response_splitting_cookie_headers_cr(WEBrick::TestHTTPResponse):
  <REGEXP> in assert_not_match(<REGEXP>, ...) should be a Regexp.
  <"cracked_indicator_for_test"> was expected to be instance_of?
  <Regexp> but was
  <String>.
==========================================================================================================
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
F
==========================================================================================================
     50:       io.rewind
     51:       res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
     52:       assert_equal '500', res.code
  => 53:       refute_match 'cracked_indicator_for_test', io.string
     54:     end
     55: 
     56:     def test_prevent_response_splitting_headers_cr
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/test/webrick/test_httpresponse.rb:53:in `test_prevent_response_splitting_cookie_headers_crlf'
Failure: test_prevent_response_splitting_cookie_headers_crlf(WEBrick::TestHTTPResponse):
  <REGEXP> in assert_not_match(<REGEXP>, ...) should be a Regexp.
  <"cracked_indicator_for_test"> was expected to be instance_of?
  <Regexp> but was
  <String>.
==========================================================================================================
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
F
==========================================================================================================
     92:       io.rewind
     93:       res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
     94:       assert_equal '500', res.code
  => 95:       refute_match 'cracked_indicator_for_test', io.string
     96:     end
     97: 
     98:     def test_set_redirect_response_splitting
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/test/webrick/test_httpresponse.rb:95:in `test_prevent_response_splitting_cookie_headers_lf'
Failure: test_prevent_response_splitting_cookie_headers_lf(WEBrick::TestHTTPResponse):
  <REGEXP> in assert_not_match(<REGEXP>, ...) should be a Regexp.
  <"cracked_indicator_for_test"> was expected to be instance_of?
  <Regexp> but was
  <String>.
==========================================================================================================
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
F
==========================================================================================================
     60:       io.rewind
     61:       res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
     62:       assert_equal '500', res.code
  => 63:       refute_match 'cracked_indicator_for_test', io.string
     64:     end
     65: 
     66:     def test_prevent_response_splitting_cookie_headers_cr
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/test/webrick/test_httpresponse.rb:63:in `test_prevent_response_splitting_headers_cr'
Failure: test_prevent_response_splitting_headers_cr(WEBrick::TestHTTPResponse):
  <REGEXP> in assert_not_match(<REGEXP>, ...) should be a Regexp.
  <"cracked_indicator_for_test"> was expected to be instance_of?
  <Regexp> but was
  <String>.
==========================================================================================================
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
F
==========================================================================================================
     39:       io.rewind
     40:       res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
     41:       assert_equal '500', res.code
  => 42:       refute_match 'cracked_indicator_for_test', io.string
     43:     end
     44: 
     45:     def test_prevent_response_splitting_cookie_headers_crlf
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/test/webrick/test_httpresponse.rb:42:in `test_prevent_response_splitting_headers_crlf'
Failure: test_prevent_response_splitting_headers_crlf(WEBrick::TestHTTPResponse):
  <REGEXP> in assert_not_match(<REGEXP>, ...) should be a Regexp.
  <"cracked_indicator_for_test"> was expected to be instance_of?
  <Regexp> but was
  <String>.
==========================================================================================================
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
F
==========================================================================================================
     81:       io.rewind
     82:       res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
     83:       assert_equal '500', res.code
  => 84:       refute_match 'cracked_indicator_for_test', io.string
     85:     end
     86: 
     87:     def test_prevent_response_splitting_cookie_headers_lf
/tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/test/webrick/test_httpresponse.rb:84:in `test_prevent_response_splitting_headers_lf'
Failure: test_prevent_response_splitting_headers_lf(WEBrick::TestHTTPResponse):
  <REGEXP> in assert_not_match(<REGEXP>, ...) should be a Regexp.
  <"cracked_indicator_for_test"> was expected to be instance_of?
  <Regexp> but was
  <String>.
==========================================================================================================
...../tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
......./tmp/guix-build-ruby-webrick-1.8.1.drv-1/source/lib/webrick/httpresponse.rb:260: warning: instance variable @upgrade not initialized
..
Finished in 7.279902005 seconds.
----------------------------------------------------------------------------------------------------------
138 tests, 790 assertions, 6 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
95.6522% passed
----------------------------------------------------------------------------------------------------------
18.96 tests/s, 108.52 assertions/s
rake aborted!
Command failed with status (1)

Any idea what they could be caused by?

Thanks!