[keycloak-dev] Improving testsuite performance

[Marek Posolda]

Hi Bartosz,

we are using parallel running tests on Travis (our CI). That allows test 
classes to be divided into groups and each group is running concurrently 
with other groups. Example script is here:
https://github.com/keycloak/keycloak/blob/master/travis-run-tests.sh

Did you mean something like that?

Thanks,
Marek

On 18/02/17 17:31, Bartosz Majsak wrote:
> Hi Marek,
>
> are you running drone tests in parallel? It could be possible to speed 
> it up with just tweaking surfire. In my last project we were using 
> 8-12 parallel drones and this gave us quite an advantage.
>
> I would be happy to help.
>
> Cheers,
> Bartosz.
>
> On Fri, Feb 17, 2017 at 10:12 PM, Marek Posolda <mposolda at redhat.com 
> <mailto:mposolda at redhat.com>> wrote:
>
>     ATM running tests in the new arquillian testsuite (
>     testsuite/integration-arquillian ) is significantly slower then
>     running
>     tests in the old testsuite ( testsuite/integration ). It was quite
>     visible in some tests, which were around 3 times slower after they
>     were
>     migrated from the old testsuite.
>
>     We found that there are 2 major bottlenecks causing it:
>     - There is re-import of all the realms before each test method. In the
>     old testsuite, it was just BeforeClass.
>     - The new testsuite uses phantomjs WebDriver by default. The old one
>     used htmlUnit. I've checked that phantomjs is around 15-times slower
>     than htmlUnit. The main reason is that htmlUnit talks directly
>     with the
>     tested server, when phantomJS (similarly like all other real browsers)
>     uses remote selenium server, which adds significant overhead. For
>     example all the simple operations like "driver.getTitle()" needs
>     to send
>     HTTP request to the selenium server.
>
>     Hence I've looked at the possibility to switch to htmlUnit by default
>     and sent PR for it: https://github.com/keycloak/keycloak/pull/3876
>     <https://github.com/keycloak/keycloak/pull/3876> .
>
>     New testsuite runs on my laptop in 21 minutes with htmlUnit, when
>     previously it was 36 minutes.
>
>     However there is the disadvantage, that htmlUnit has limited
>     javascript
>     support and is not the best for angular apps. It seems that admin
>     console tests won't run with it. I also needed to do some
>     refactoring of
>     few existing tests to have them pass with htmlUnit (eg.
>     AbstractDemoServletsAdapterTest to use assertEvents instead of admin
>     console etc).
>
>     However this won't be an issue as browser implementation can be
>     overriden with: -Dbrowser=phantomjs
>
>     So it's possible to run console tests with proper browsers.
>
>     Anyone seeing issues with switch to htmlUnit by default?
>
>     I hope that after fix the import + maybe few other things (eg. share
>     adminClient per class instead of test method etc), we will be able to
>     run whole testsuite in less than 15 minutes!
>
>     Thanks,
>     Marek
>
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