On Fri, Jul 12, 2019 at 08:42:51AM -0700, Ben Pfaff wrote:
> On Thu, Jul 11, 2019 at 11:46:04AM -0400, Vasu Dasari wrote:
> > Origins for this patch are captured at
> > https://mail.openvswitch.org/pipermail/ovs-discuss/2019-June/048923.html.
> > 
> > Summarizing here, when a test fails, it would be good to pause test 
> > execution
> > and let the developer poke around the system to see current status of 
> > system.
> > 
> > As part of this patch, made a small tweaks to ovs-macros.at, so that when 
> > test
> > suite fails, ovs_on_exit() function will be called. And in this function, a 
> > check
> > is made to see if an environment variable to OVS_PAUSE_TEST is set. If it is
> > set, then test suite is paused and will continue to wait for user input
> > Ctrl-D. Meanwhile user can poke around the system to see why test case has
> > failed. Once done with investigation, user can press ctrl-d to cleanup the
> > test suite.
> > 
> > For example, to re-run test case 139:
> > 
> > export OVS_PAUSE_TEST=1
> > cd tests/system-userspace-testsuite.dir/139
> > sudo -E ./run
> 
> Seems like a reasonable idea.
> 
> The following replies on GNU extensions to "read" and to "printf".  I'd
> just substitute a plain "read", so that the user can just push Enter to
> continue.

Oh, also I'd add a note about this feature to
Documentation/topics/testing.rst.
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