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[Lars Kellogg-Stedman <lars@xxxxxxxxxx>]

Public bug reported:

The test_unstable_names test expects cloudinit.util.udevadm_settle to be
called once:

  self.assertEqual(1, mock_settle.call_count)

But cloudinit.net.find_fallback_nic inspects /proc/cmdline for the
net.ifnames=0 parameter, and if found will not call udevadm_settle,
which causes the test to fail.

The unit tests should not rely on information from the host environment.

** Affects: cloud-init
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1769952

Title:
  test_net.TestGenerateFallbackConfig.test_unstable_names is sensitive
  to host environment

Status in cloud-init:
  New

Bug description:
  The test_unstable_names test expects cloudinit.util.udevadm_settle to
  be called once:

    self.assertEqual(1, mock_settle.call_count)

  But cloudinit.net.find_fallback_nic inspects /proc/cmdline for the
  net.ifnames=0 parameter, and if found will not call udevadm_settle,
  which causes the test to fail.

  The unit tests should not rely on information from the host
  environment.

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