----- Original Message ----- > From: "Sean Dague" <[email protected]> > To: "OpenStack Development Mailing List (not for usage questions)" > <[email protected]> > Sent: Sunday, January 19, 2014 1:53:21 PM > Subject: Re: [openstack-dev] [qa][Neutron][Tempest][Network] Break down > NetworkBasicOps to smaller test cases > > On 01/19/2014 02:06 AM, Yair Fried wrote: > > MT:"Is your issue here that it's just called basic ops and you > > don't think that's > > reflective of what is being tested in that file anymore" > > > > No. > > My issue is, that the current scenario is, in fact, at least 2 > > separate scenarios: > > 1. original basic_ops > > 2. reassociate_floating_ip > > to which I would like to add ( > > https://review.openstack.org/#/c/55146/ ): > > 4. check external/internal connectivity > > 3. update dns > > > > While #2 includes #1 as part of its setup, its failing shouldn't > > prevent #1 from passing. the obvious solution would be to create > > separate modules for each test case, but since they all share the > > same setup sequence, IMO, they should at least share code. > > Notice that in my patch, #2 still includes #1. > > > > Actually, the more network scenario we get, the more we will need > > to do something in that direction, since most of the scenarios > > will require the setup of a VM with a floating-ip to ssh into. > > > > So either we do this, or we move all of this code to > > scenario.manager which is also becoming very complicated > > If #2 is always supposed to work, then I don't actually understand > why > #1 being part of the test or not part of the test is really relevant. > And being part of the same test saves substantial time. > > If you have tests that do: > * A -> B -> C > * A -> B -> D -> F > > There really isn't value in a test for A -> B *as long* as you have > sufficient sign posting to know in the fail logs that A -> B worked > fine. > > And there are sufficient detriments in making it a separate test, > because it's just adding time to the runs without actually testing > anything different.
OK, but considering my pending patch (#3 and #4) what about: #1 -> #2 #1 -> #3 #1 -> #4 instead of #1 -> #2 -> #3 -> #4 a failure in #2 will prevent #3 and #4 from running even though they are completely unrelated > > -Sean > > > > > Yair > > > > ----- Original Message ----- > > From: "Matthew Treinish" <[email protected]> > > To: "OpenStack Development Mailing List (not for usage questions)" > > <[email protected]> > > Sent: Friday, January 17, 2014 6:17:55 AM > > Subject: Re: [openstack-dev] [qa][Neutron][Tempest][Network] Break > > down NetworkBasicOps to smaller test cases > > > > On Wed, Jan 15, 2014 at 11:20:22AM -0500, Yair Fried wrote: > >> Hi Guys > >> As Maru pointed out - NetworkBasicOps scenario has grown out of > >> proportion and is no longer "basic" ops. > > > > Is your issue here that it's just called basic ops and you don't > > think that's > > reflective of what is being tested in that file anymore. If that's > > the case > > then just change the name. > > > >> > >> So, I started breaking it down to smaller test cases that can fail > >> independently. > > > > I'm not convinced this is needed. Some scenarios are going to be > > very involved > > and complex. Each scenario tests is designed to simulate real use > > cases in the > > cloud, so obviously some of them will be fairly large. The solution > > for making > > debugging easier in these cases is to make sure that any failures > > have clear > > messages. Also make sure there is plenty of signposting debug log > > messages so > > when something goes wrong you know what state the test was in. > > > > If you split things up into smaller individual tests you'll most > > likely end up > > making tests that are really aren't scenario tests. They'd be > > closer to API > > tests, just using the official clients, which really shouldn't be > > in the > > scenario tests. > > > >> > >> Those test cases share the same setup and tear-down code: > >> 1. create network resources (and verify them) > >> 2. create VM with floating IP. > >> > >> I see 2 options to manage these resources: > >> 1. Completely isolated - resources are created and cleaned using > >> setUp() and tearDown() methods [1]. Moving cleanup to tearDown > >> revealed this bug [2]. Apparently the previous way (with > >> tearDownClass) wasn't as fast). This has the side effect of > >> having expensive resources (ie VMs and floating IPs) created and > >> discarded multiple times though they are unchanged. > >> > >> 2. Shared Resources - Using the idea of (or actually using) > >> Fixtures - use the same resources unless a test case fails, in > >> which case resources are deleted and created by the next test > >> case [3]. > > > > If you're doing this and splitting things into smaller tests then > > it has to be > > option 1. Scenarios have to be isolated if there are resources > > shared between > > scenario tests that really is only one scenario and shouldn't be > > split. In fact > > I've been working on a change that fixes the scenario test > > tearDowns that has the > > side effect of enforcing this policy. > > > > Also just for the record we've tried doing option 2 in the past, > > for example > > there used to be a tenant-reuse config option. The problem with > > doing that was > > actually tends to cause more non-deterministic failures or adding a > > not > > insignificant wait time to ensure the state is clean when you start > > the next > > test. Which is why we ended up pulling this out of tree. What ends > > up happening > > is that you get leftover state from previous tests and the second > > test ends up > > failing because things aren't in the clean state that the test case > > assumes. If > > you look at some of the oneserver files in the API that is the only > > place we > > still do this in the tempest, and we've had many issues on making > > that work > > reliably. Those tests are in a relatively good place now but those > > are much > > simpler tests. Also between each test setUp has to check and ensure > > that the > > shared server is in the proper state. If it's not then the shared > > server has to > > be rebuilt. This methodology would become far more involved for the > > scenario > > tests where you have to manage more than one shared resource. > > > >> > >> I would like to hear your opinions, and know if anyone has any > >> thoughts or ideas on which direction is best, and why. > >> > >> Once this is completed, we can move on to other scenarios as well > >> > >> Regards > >> Yair > >> > >> [1] fully isolated - https://review.openstack.org/#/c/66879/ > >> [2] > >> https://bugs.launchpad.net/nova/+bug/1269407/+choose-affected-product > >> [3] shared resources - https://review.openstack.org/#/c/64622/ > > > > -Matt Treinish > > > > _______________________________________________ > > OpenStack-dev mailing list > > [email protected] > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > > _______________________________________________ > > OpenStack-dev mailing list > > [email protected] > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > > > -- > Sean Dague > Samsung Research America > [email protected] / [email protected] > http://dague.net > > > _______________________________________________ > OpenStack-dev mailing list > [email protected] > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > _______________________________________________ OpenStack-dev mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
