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[Bug 2112429] Re: [questing] [autopkgtest] Apache2 2.4.63-1ubuntu2 fails its own test suite

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** Description changed:

  Discovered through update_excuses and confirmed locally in an LXD
  autopkgtest container (from https://github.com/canonical/ubuntu-
  maintainers-handbook/blob/main/PackageTests.md to create it), the
  autopkgtests on 2.4.63-1ubuntu2 fail for apache2's test suite.
  
  It fails on debian/perl-framework/t/apache/pr64339.t, test #12 which
  makes sure certain content is rendered by xml2enc's backend components.
  
- I followed every single
+ I followed every single step and reproduced in a pure LXD container with
+ the apache2 binaries in proposed.
+ 
+ With this in mind, the following is the specific items in the test at
+ fault:
+ 
+ EXPECTED: response from looking at
+ http://localhost:8529/modules/xml2enc/front/doc.isohtml with a GET call
+ is "<html><body><p>fóó\n</p></body></html>" and is UTF-8 encoded
+ 
+ ACTUAL: response from looking at
+ http://localhost:8529/modules/xml2enc/front/doc.isohtml with a GET call
+ is "<html><body>fóó\n</body></html>"
+ 
+ There is a changelog that introduces this test via a pull request:
+   *) mod_xml2enc: Update check to accept any text/ media type
+      or any XML media type per RFC 7303, avoiding
+      corruption of Microsoft OOXML formats.  PR 64339.
+      [Joseph Heenan joseph.heenan fintechlabs.io, Joe Orton]
+ 
+ ... in 2.4.59 in April 2024.  At the time the test was written, Apache
+ was using libxml2 and the 2.12 branch.
+ 
+ After examining the Apache code (modules/filters/mod_xml2enc.c), it
+ calls htmlParser which is part of libxml2.
+ 
+ Using HTMLParser from python3-lxml (which is libxml2 wrappings for
+ Python), I went through the decoding process of perl-
+ framework/t/htdocs/modules/xml2enc/doc.isohtml which is what is used
+ during the test suite during t/apache/pr64339.t, I was able to determine
+ that libxml2's parser outputs the value observed in teh failing test -
+ namely "<html><body>fóó\n</body></html>" - which indicates this is a
+ libxml2 change.
+ 
+ I am unsure where the Ubuntu packaging gets its debian/perl-framework
+ for its tests, but as this seems to be a libxml2 change, we can either
+ modify debian/perl-framework/t/apache/pr64339.t to adjust its output, or
+ look for an updated set of Apache2's test suites and perl-framework.
+ 
+ ---
  
  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: apache2 2.4.63-1ubuntu2
  ProcVersionSignature: Ubuntu 6.11.0-26.26~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-26-generic x86_64
  Apache2ConfdDirListing: False
  Apache2Modules:
-  AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.73.1.36. Set the 'ServerName' directive globally to suppress this message
-  httpd (pid 2813) already running
+  AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.73.1.36. Set the 'ServerName' directive globally to suppress this message
+  httpd (pid 2813) already running
  ApportVersion: 2.32.0-0ubuntu5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CloudArchitecture: x86_64
  CloudBuildName: server
  CloudID: lxd
  CloudName: lxd
  CloudPlatform: lxd
  CloudSerial: 20250528
  CloudSubPlatform: LXD socket API v. 1.0 (/dev/lxd/sock)
  Date: Wed Jun  4 01:37:25 2025
  ProcEnviron:
-  LANG=C.UTF-8
-  PATH=(custom, no user)
-  TERM=xterm-256color
+  LANG=C.UTF-8
+  PATH=(custom, no user)
+  TERM=xterm-256color
  SourcePackage: apache2
  UpgradeStatus: No upgrade log present (probably fresh install)
- error.log:
-  [Wed Jun 04 00:55:26.316133 2025] [mpm_event:notice] [pid 2813:tid 2813] AH00489: Apache/2.4.63 (Ubuntu) configured -- resuming normal operations
-  [Wed Jun 04 00:55:26.316189 2025] [core:notice] [pid 2813:tid 2813] AH00094: Command line: '/usr/sbin/apache2'

** Attachment removed: "apache2.conf from test suite"
   https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/2112429/+attachment/5881917/+files/apache2_test_config

** Summary changed:

- [questing] [autopkgtest] Apache2 2.4.63-1ubuntu2 fails its own test suite 
+ [questing] [autopkgtest] Apache2 2.4.63-1ubuntu2 fails d/perl-framework test suites

** Also affects: apache2 (Ubuntu Questing)
   Importance: Undecided
       Status: New

** Summary changed:

- [questing] [autopkgtest] Apache2 2.4.63-1ubuntu2 fails d/perl-framework test suites
+ [questing] [autopkgtest] Apache2 2.4.63-1ubuntu2 fails d/perl-framework test suites, thus fails autopkgtests

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https://bugs.launchpad.net/bugs/2112429

Title:
  [questing] [autopkgtest] Apache2 2.4.63-1ubuntu2 fails d/perl-
  framework test suites, thus fails autopkgtests

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