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https://issues.apache.org/jira/browse/AURORA-595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14070437#comment-14070437
 ] 

brian wickman commented on AURORA-595:
--------------------------------------

The key here is the "-s" option to pytest.  You can't do capsys.readouterr() if 
the user specifies "-s" (crazy, I know) because "-s" shunts the redirection so 
it goes straight to stderr/stdout instead of into the local handles.  If you do
{noformat}
./pants src/test/python/apache/aurora/common:test_cluster_option -s
{noformat}
it breaks:
{noformat}
mba=aurora=; ./pants src/test/python/apache/aurora/common:test_cluster_option -s
Build operating on top level addresses: 
set([BuildFileAddress(/Users/wickman/clients/aurora/src/test/python/apache/aurora/common/BUILD,
 test_cluster_option)])
====================================================================================================
 test session starts 
=====================================================================================================
platform darwin -- Python 2.6.7 -- py-1.4.22 -- pytest-2.6.0
plugins: cov, timeout
collected 2 items 

src/test/python/apache/aurora/common/test_cluster_option.py .tmp5Rg7x_: error: 
borg is not a valid cluster for the --source_cluster option. Valid options for 
clusters are smf1 smf1-test
F

==========================================================================================================
 FAILURES 
==========================================================================================================
_______________________________________________________________________________________________________
 test_parsable 
________________________________________________________________________________________________________

capsys = <_pytest.capture.CaptureFixture instance at 0x1106ae830>

    def test_parsable(capsys):
      parser = options.parser().options((
        ClusterOption('--source_cluster', '-s', clusters=CLUSTER_LIST),
        ClusterOption('--dest_cluster', clusters=CLUSTER_LIST),
        ClusterOption('--cluster', cluster_provider=cluster_provider)))
    
      values, _ = parser.parse(['--source_cluster=smf1-test', 
'--cluster=smf1-test'])
      assert isinstance(values.source_cluster, Cluster)
      assert isinstance(values.cluster, Cluster)
    
      with pytest.raises(SystemExit):
        parser.parse(['--source_cluster=borg'])
    
>     out, err = capsys.readouterr()

src/test/python/apache/aurora/common/test_cluster_option.py:59: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <_pytest.capture.CaptureFixture instance at 0x1106ae830>

    def readouterr(self):
        try:
            return self._capture.readouterr()
        except AttributeError:
>           return self._outerr
E           AttributeError: CaptureFixture instance has no attribute '_outerr'

/private/var/folders/4d/9tz0cd5n2n7947xs21gspsxc0000gp/T/tmp5Rg7x_/.deps/pytest-2.6.0-py2.py3-none-any.whl/_pytest/capture.py:205:
 AttributeError
=============================================================================================
 1 failed, 1 passed in 0.08 seconds 
=============================================================================================
src.test.python.apache.aurora.common.test_cluster_option                        
.....   FAILURE
{noformat}

> test_cluster_option test case failing 
> --------------------------------------
>
>                 Key: AURORA-595
>                 URL: https://issues.apache.org/jira/browse/AURORA-595
>             Project: Aurora
>          Issue Type: Story
>          Components: Testing
>            Reporter: Jake Farrell
>             Fix For: 0.5.0
>
>
>  Test src.test.python.apache.aurora.common.test_cluster_option                
>         .....   FAILURE
> E           AttributeError: CaptureFixture instance has no attribute '_outerr'



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