[Bug 1510060] Re: test regression: TestCloneUpgrade.test_clone_upgrade_synthetic

[Martin Pitt]

Indeed -- the bug was perfectly reproducible yesterday, now it succeeds
again in a schroot and with adt-run. So it fixed itself as mysteriously
as it arrived :-)

** Changed in: apt-clone (Ubuntu)
       Status: New => Fix Released

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Title:
  test regression: TestCloneUpgrade.test_clone_upgrade_synthetic

Status in apt-clone package in Ubuntu:
  Fix Released

Bug description:
  apt-clone's tests have worked fine in wily
  (http://autopkgtest.ubuntu.com/packages/a/apt-clone/wily/amd64/) but
  started failing consistently in xenial
  (http://autopkgtest.ubuntu.com/packages/a/apt-clone/xenial/amd64/).

  This can be reproduced fast in a simple schroot with the test deps
  installed:

  $ cd tests; PYTHONPATH=.. python3 test_clone_upgrade.py -v TestCloneUpgrade.test_clone_upgrade_synthetic
  [...]
  ======================================================================
  FAIL: test_clone_upgrade_synthetic (__main__.TestCloneUpgrade)
  test clone upgrade with on-the-fly generated chroots
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "test_clone_upgrade.py", line 58, in test_clone_upgrade_synthetic
      self.assertTrue(len(cache.get_changes()) > 0)
  AssertionError: False is not true

  I added
              print('--------- %s -----\n%s\n-------------' % (meta, cache.get_changes()))

  to the test, and I get

  --------- ubuntu-standard -----
  []
  --------- ubuntu-desktop -----
  [<Package: name:'libvisual-0.4-plugins' architecture='amd64' id:6857>]
  --------- kubuntu-desktop -----
  [<Package: name:'libvisual-0.4-plugins' architecture='amd64' id:6857>, <Package: name:'lksctp-tools' architecture='amd64' id:9362>]
  --------- xubuntu-desktop -----
  [<Package: name:'libvisual-0.4-plugins' architecture='amd64' id:6857>]
   
  So the check works for the metapackages except ubuntu-standard. More curiously, when running the test on wily *now*, it also fails, which suggests that perhaps the very late distro-info update for xenial may have influenced this?

  But I haven't the slightest idea what this test is trying to do, so I
  don't know how to fix this.

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