[Bug 2076186] Re: tests/system/test_signal_crashes::T::test_crash_system_slice fails on armhf

[Benjamin Drung]

Verified successful autopkgtest on
https://autopkgtest.ubuntu.com/packages/apport for 2.28.1-0ubuntu3.3:

* amd64: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/amd64/a/apport/20241114_155914_7aded@/log.gz
* arm64: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/arm64/a/apport/20241114_152854_d2cf5@/log.gz
* armhf: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/armhf/a/apport/20241114_153245_54069@/log.gz
* ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/ppc64el/a/apport/20241114_153720_f72b7@/log.gz
* s390x: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/s390x/a/apport/20241114_152611_b90ee@/log.gz

All test were successful, except for these tests on s390x:

```
FAILED tests/unit/test_problem_report.py::T::test_modify
FAILED tests/unit/test_report.py::T::test_report_from_systemd_coredump_storage_journal
FAILED tests/integration/test_problem_report.py::T::test_big_file
FAILED tests/integration/test_problem_report.py::T::test_write_file
```

These four test failures are caused by bug #2076269 which I will address
in a future SRU (summary: it's a flaw of the test, but not the non-test
code).

** Tags removed: verification-needed verification-needed-noble
** Tags added: verification-done verification-done-noble

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https://bugs.launchpad.net/bugs/2076186

Title:
  tests/system/test_signal_crashes::T::test_crash_system_slice fails on
  armhf

Status in Apport:
  Fix Released
Status in apport package in Ubuntu:
  Fix Released
Status in apport source package in Noble:
  Fix Committed

Bug description:
  [ Impact ]

  The autopkgtest can fail:

  7373s =================================== FAILURES ===================================
  7373s __________________________ T.test_crash_system_slice ___________________________
  7373s
  7373s self = <tests.system.test_signal_crashes.T testMethod=test_crash_system_slice>
  7373s
  7373s     @unittest.skipIf(
  7373s         get_init_system() != "systemd", "running init system is not systemd"
  7373s     )
  7373s     @skip_if_command_is_missing("systemd-run")
  7373s     @unittest.skipIf(os.geteuid() != 0, "this test needs to be run as root")
  7373s     def test_crash_system_slice(self):
  7373s         """Report generation for a protected process running in the system
  7373s         slice"""
  7373s         apport.fileutils.report_dir = self.orig_report_dir
  7373s         self.test_report = os.path.join(
  7373s             apport.fileutils.report_dir,
  7373s             f"{self.TEST_EXECUTABLE.replace('/', '_')}.{os.getuid()}.crash",
  7373s         )
  7373s
  7373s         system_run = self.create_test_process(
  7373s             command="/usr/bin/systemd-run",
  7373s             args=[
  7373s                 "-t",
  7373s                 "-q",
  7373s                 "--slice=system.slice",
  7373s                 "-p",
  7373s                 "ProtectSystem=true",
  7373s                 self.TEST_EXECUTABLE,
  7373s             ]
  7373s             + self.TEST_ARGS,
  7373s         )
  7373s         try:
  7373s             pids = pidof(self.TEST_EXECUTABLE) - self.running_test_executables
  7373s >           self.assertEqual(len(pids), 1)
  7373s E           AssertionError: 0 != 1
  7373s
  7373s /tmp/autopkgtest.JkYKWH/autopkgtest_tmp/tests/system/test_signal_crashes.py:240: AssertionError

  https://autopkgtest.ubuntu.com/results/autopkgtest-
  noble/noble/armhf/a/apport/20240802_185146_b3174@/log.gz

  [ Test Plan ]

  Check that the fixed Apport does not have failing unit-and-
  integration-tests autopkgtests on all archs.

  [ Where problems could occur ]

  The fix only touches test code. It could only affect the test results,
  but not code installed on the users machines.

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