[Bug 2054943] [NEW] jruby: mri-extra - flaky TestOpen3 pipe tests

[Vladimir Petko]

Public bug reported:

The autopkgtests for jruby fail  `mri-extra` with the following errors:

  1) Failure:
TestOpen3#test_pipeline_start [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:303]:
Failed assertion, no message given.

  2) Failure:
TestOpen3#test_pipeline_w [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:288]:
<true> expected but was
<false>.

  3) Failure:
TestOpen3#test_capture3_flip [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:190]:

The minimal reproducer of those:
----
require 'open3'

RUBY = 'jruby'
Open3.pipeline_r([RUBY, '-e', 'print "1"'],
                     [RUBY, '-e', 'print STDIN.read + "2"']) {|o,ts|
      print(o.read)
    }
---

executing the above sample results in the following output:
# jruby test.rb
12# jruby test.rb
12# jruby test.rb
12# jruby test.rb
12# jruby test.rb
2# jruby test.rb
12# jruby test.rb
2# jruby test.rb
12# jruby test.rb
2# jruby test.rb
2# jruby test.rb
2# jruby test.rb
2# jruby test.rb
12# jruby test.rb
12# jruby test.rb
2Errno::EPIPE: Broken pipe - <STDOUT>
   write at org/jruby/RubyIO.java:1569
   write at org/jruby/RubyIO.java:1458
   write at org/jruby/RubyIO.java:2829
   print at org/jruby/RubyIO.java:1831
   print at org/jruby/RubyKernel.java:649
  <main> at -e:1

Note: the failure occurs both with Java 17 and Java 21

** Affects: java-common (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: jruby (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: update-excuse

** Description changed:

- The autopkgtests for jruby fail with the following errors:
+ The autopkgtests for jruby fail  `mri-extra` with the following errors:
  
- 
-   1) Failure:
+   1) Failure:
  TestOpen3#test_pipeline_start [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:303]:
  Failed assertion, no message given.
  
-   2) Failure:
+   2) Failure:
  TestOpen3#test_pipeline_w [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:288]:
  <true> expected but was
  <false>.
  
-   3) Failure:
+   3) Failure:
  TestOpen3#test_capture3_flip [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:190]:
  
  The minimal reproducer of those:
  ----
  require 'open3'
  
  RUBY = 'jruby'
  Open3.pipeline_r([RUBY, '-e', 'print "1"'],
-                      [RUBY, '-e', 'print STDIN.read + "2"']) {|o,ts|
-       print(o.read)
-     }
+                      [RUBY, '-e', 'print STDIN.read + "2"']) {|o,ts|
+       print(o.read)
+     }
  ---
  
  executing the above sample results in the following output:
- # jruby test.rb 
- 12# jruby test.rb 
- 12# jruby test.rb 
- 12# jruby test.rb 
- 12# jruby test.rb 
- 2# jruby test.rb 
- 12# jruby test.rb 
- 2# jruby test.rb 
- 12# jruby test.rb 
- 2# jruby test.rb 
- 2# jruby test.rb 
- 2# jruby test.rb 
- 2# jruby test.rb 
- 12# jruby test.rb 
- 12# jruby test.rb 
+ # jruby test.rb
+ 12# jruby test.rb
+ 12# jruby test.rb
+ 12# jruby test.rb
+ 12# jruby test.rb
+ 2# jruby test.rb
+ 12# jruby test.rb
+ 2# jruby test.rb
+ 12# jruby test.rb
+ 2# jruby test.rb
+ 2# jruby test.rb
+ 2# jruby test.rb
+ 2# jruby test.rb
+ 12# jruby test.rb
+ 12# jruby test.rb
  2Errno::EPIPE: Broken pipe - <STDOUT>
-    write at org/jruby/RubyIO.java:1569
-    write at org/jruby/RubyIO.java:1458
-    write at org/jruby/RubyIO.java:2829
-    print at org/jruby/RubyIO.java:1831
-    print at org/jruby/RubyKernel.java:649
-   <main> at -e:1
+    write at org/jruby/RubyIO.java:1569
+    write at org/jruby/RubyIO.java:1458
+    write at org/jruby/RubyIO.java:2829
+    print at org/jruby/RubyIO.java:1831
+    print at org/jruby/RubyKernel.java:649
+   <main> at -e:1

** Also affects: java-common (Ubuntu)
   Importance: Undecided
       Status: New

** Summary changed:

- flaky jruby TestOpen3  pipe tests
+ jruby: mri-extra - flaky TestOpen3  pipe tests

** Tags added: update-excusse

** Tags removed: update-excusse
** Tags added: update-excuse

** Description changed:

  The autopkgtests for jruby fail  `mri-extra` with the following errors:
  
    1) Failure:
  TestOpen3#test_pipeline_start [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:303]:
  Failed assertion, no message given.
  
    2) Failure:
  TestOpen3#test_pipeline_w [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:288]:
  <true> expected but was
  <false>.
  
    3) Failure:
  TestOpen3#test_capture3_flip [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:190]:
  
  The minimal reproducer of those:
  ----
  require 'open3'
  
  RUBY = 'jruby'
  Open3.pipeline_r([RUBY, '-e', 'print "1"'],
                       [RUBY, '-e', 'print STDIN.read + "2"']) {|o,ts|
        print(o.read)
      }
  ---
  
  executing the above sample results in the following output:
  # jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  2# jruby test.rb
  12# jruby test.rb
  2# jruby test.rb
  12# jruby test.rb
  2# jruby test.rb
  2# jruby test.rb
  2# jruby test.rb
  2# jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  2Errno::EPIPE: Broken pipe - <STDOUT>
     write at org/jruby/RubyIO.java:1569
     write at org/jruby/RubyIO.java:1458
     write at org/jruby/RubyIO.java:2829
     print at org/jruby/RubyIO.java:1831
     print at org/jruby/RubyKernel.java:649
    <main> at -e:1
+ 
+ Note: the failure occurs both with Java 17 and Java 21

-- 
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https://bugs.launchpad.net/bugs/2054943

Title:
  jruby: mri-extra - flaky TestOpen3  pipe tests

Status in java-common package in Ubuntu:
  New
Status in jruby package in Ubuntu:
  New

Bug description:
  The autopkgtests for jruby fail  `mri-extra` with the following
  errors:

    1) Failure:
  TestOpen3#test_pipeline_start [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:303]:
  Failed assertion, no message given.

    2) Failure:
  TestOpen3#test_pipeline_w [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:288]:
  <true> expected but was
  <false>.

    3) Failure:
  TestOpen3#test_capture3_flip [/tmp/autopkgtest.Dz4xQk/autopkgtest_tmp/test/mri/test_open3.rb:190]:

  The minimal reproducer of those:
  ----
  require 'open3'

  RUBY = 'jruby'
  Open3.pipeline_r([RUBY, '-e', 'print "1"'],
                       [RUBY, '-e', 'print STDIN.read + "2"']) {|o,ts|
        print(o.read)
      }
  ---

  executing the above sample results in the following output:
  # jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  2# jruby test.rb
  12# jruby test.rb
  2# jruby test.rb
  12# jruby test.rb
  2# jruby test.rb
  2# jruby test.rb
  2# jruby test.rb
  2# jruby test.rb
  12# jruby test.rb
  12# jruby test.rb
  2Errno::EPIPE: Broken pipe - <STDOUT>
     write at org/jruby/RubyIO.java:1569
     write at org/jruby/RubyIO.java:1458
     write at org/jruby/RubyIO.java:2829
     print at org/jruby/RubyIO.java:1831
     print at org/jruby/RubyKernel.java:649
    <main> at -e:1

  Note: the failure occurs both with Java 17 and Java 21

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