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[Henrique Marques <1918495@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========
I have performed fault injection in openstack nova by changing the code of compute/api.py (inserting a representative/probable bug) and then ran the unit, functional and integration tests and discover that some of the bugs inserted were not detected by the test suite:
The reference WVAL (Wrong logical expression used in assignment) is a type of fault where the assignment of a variable using an expression is incorrect.

Steps to reproduce
==================

Line of Code	|Original Code		|Incorrect Code
4006	|instance.auto_disk_config = auto_disk_config or False	|instance.auto_disk_config = auto_disk_config and False

Refactor the line of code above to the incorrect code. Then execute the
unit tests.

Expected result
===============
The unit tests should detect the fault.


Actual result
===============
The fault was not detected by the unit tests.

Environment
===========
The code tested is on the stable/ussuri branch.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1918495

Title:
  Fault Injection #2033 - improve unit test effectiveness

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  I have performed fault injection in openstack nova by changing the code of compute/api.py (inserting a representative/probable bug) and then ran the unit, functional and integration tests and discover that some of the bugs inserted were not detected by the test suite:
  The reference WVAL (Wrong logical expression used in assignment) is a type of fault where the assignment of a variable using an expression is incorrect.

  Steps to reproduce
  ==================

  Line of Code	|Original Code		|Incorrect Code
  4006	|instance.auto_disk_config = auto_disk_config or False	|instance.auto_disk_config = auto_disk_config and False

  Refactor the line of code above to the incorrect code. Then execute
  the unit tests.

  Expected result
  ===============
  The unit tests should detect the fault.

  
  Actual result
  ===============
  The fault was not detected by the unit tests.

  Environment
  ===========
  The code tested is on the stable/ussuri branch.

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