[Bug 1848237] Re: amd64-only test running on i386

[Corey Bryant]

I just uploaded it to the Eoan unapproved queue. Apologies for not
updating the changelog with the bug, but I think we can just manually
track it via this bug. Sahid had run autopkgtests successfully but
seeing as it's release week I wanted to be safe and land it via bileto
but I've given up on that. Anyway it is fixed in python-pyeclib
1.5.0-1ubuntu6.

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Title:
  amd64-only test running on i386

Status in python-pyeclib package in Ubuntu:
  New
Status in six package in Ubuntu:
  Invalid

Bug description:
  Some tests in d/t/control are not meant to be run on non-amd64 architectures. The test script tries to detect this and skip them:
  arch = platform.machine()
  if sys.argv[1].startswith('isa_') and arch == 'x86_64':
      print("Skipping {} test for {} architecture".format(sys.argv[1], arch))
  else:
  ...

  In eoan, at some point during the development cycle, the VM running i386 tests is actually on an amd64 kernel:
  """
  ...
  -name adt-eoan-i386-python-pyeclib-20191014-091043 --image adt/ubuntu-eoan-i386-server
  ...
  Get:5 http://ftpmaster.internal/ubuntu eoan-proposed/universe Sources [127 kB]
  Get:6 http://ftpmaster.internal/ubuntu eoan-proposed/main amd64 Packages [18.0 kB]
  Get:7 http://ftpmaster.internal/ubuntu eoan-proposed/main i386 Packages [12.9 kB]
  ...
  linux-generic:amd64 is already the newest version (5.3.0.18.21).
  ...
  utopkgtest [09:11:51]: testbed running kernel: Linux 5.3.0-18-generic #19-Ubuntu SMP Tue Oct 8 20:14:06 UTC 2019
  autopkgtest [09:11:51]: testbed dpkg architecture: i386
  """

  In such an environment, platform.machine() will return "x86_64", and the test will be run, but fail:
  autopkgtest [09:22:26]: test command7: python debian/tests/encode-decode.py isa_l_rs_vand
  autopkgtest [09:22:26]: test command7: [-----------------------
  Traceback (most recent call last):
    File "debian/tests/encode-decode.py", line 15, in <module>
      ec = ECDriver(k=3, m=3, hd=3, ec_type=sys.argv[1])
    File "/usr/lib/python2.7/dist-packages/pyeclib/ec_iface.py", line 212, in __init__
      validate=int(self.validate)
    File "/usr/lib/python2.7/dist-packages/pyeclib/utils.py", line 73, in create_instance
      instance = object_class(*args, **kwargs)
    File "/usr/lib/python2.7/dist-packages/pyeclib/core.py", line 61, in __init__
      validate)
  pyeclib.ec_iface.ECBackendInstanceNotAvailable: pyeclib_c_init ERROR: Backend instance not found. Please inspect syslog for liberasurecode error report.
  init: autopkgtest [09:22:26]: test command7: -----------------------]

  It's probably best to use "dpkg --architecture" for this check.

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