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[Brian Haley <1801306@xxxxxxxxxxxxxxxxxx>]

The bug is fixed, the additional change to cleanup the code was never
merged. For that reason I will close this but please reopen if
necessary.

** Changed in: neutron
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1801306

Title:
  Race conditions in
  neutron_tempest_plugin/scenario/test_security_groups.py

Status in neutron:
  Fix Released

Bug description:
  I found a couple of race conditions in neutron-tempest-plugin
  affecting recular CI build when executing test jobs with neutron-
  tempest-plugin test suite. These race conditions are mostly because
  two test case wrongly modify default security group causing random
  failures in other scenario test cases or also failing themself.

  1) Test case test_default_sec_grp_scenarios shouldn't change default security group rule at below lines:
  https://github.com/openstack/neutron-tempest-plugin/blob/cf38b77328dbf94f1323f96f68aa77124a6f4a7b/neutron_tempest_plugin/scenario/test_security_groups.py#L109-L112
  This could caouse other tests to fail. Modifying default resources should be forbidden. There is no difference between default security group and another group, therefore the test makes no sense at all. Tests that do some changes on resources should create its own target resources.

   
  2) Test case test_protocol_number_rule list for security groups and takes the first one, then it changes it at line
  https://github.com/openstack/neutron-tempest-plugin/blob/cf38b77328dbf94f1323f96f68aa77124a6f4a7b/neutron_tempest_plugin/scenario/test_security_groups.py#L147-L149
  The problem here is that the first security group that is taken could be the default security group instead of the one created by the test. This would cause a failure in the same test and even worst in another test later.

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