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Hi,

Indeed, stable/grizzly contains the following code in the base test case
class (quantum/tests/base.py):

        if os.environ.get('OS_STDOUT_NOCAPTURE') not in TRUE_STRING:
            stdout = self.useFixture(fixtures.StringStream('stdout')).stream
            self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))

so stdout is captured by default, and you should use OS_STDOUT_NOCAPTURE=1
instead.

The behavior was changed in this commit
https://github.com/openstack/neutron/commit/91bd4bbaeac37d12e61c9c7b033f55ec9f1ab562
.

Thanks,
Roman


On Wed, Jul 17, 2013 at 8:44 AM, Qiu Yu <unicell at gmail.com> wrote:

> On Wed, Jul 17, 2013 at 12:00 PM, Roman Podolyaka
> <rpodolyaka at mirantis.com> wrote:
> > Hi,
> >
> > Ensure that stdout isn't captured by the corresponding fixture:
> >
> > OS_STDOUT_CAPTURE=0 python -m testtools.run
> >
> neutron.tests.unit.openvswitch.test_ovs_neutron_agent.TestOvsNeutronAgent.test_port_update
> > Tests running...
>
> Thanks Roman, ipdb works fine with test cases in Neutron master
> branch. And if you run 'python -m testtools.run {testcase}', stdout is
> not captured by default.
>
> However, the issue still exists with Neutron stable/grizzly branch,
> even with OS_STDOUT_CAPTURE=0. Not quite sure which change in trunk
> resolved this issue.
>
> Thanks,
> --
> Qiu Yu
>
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> OpenStack-dev at lists.openstack.org
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>
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