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Executing the functest suites
=============================
Manual testing
--------------
Once the Functest docker container is running and Functest environment ready
(through */home/opnfv/repos/functest/docker/prepare_env.sh* script), the system is
ready to run the tests.
The script *run_tests.sh* launches the test in an automated way.
Although it is possible to execute the different tests manually, it is
recommended to use the previous shell script which makes the call
to the actual scripts with the appropriate parameters.
It is located in *$repos_dir/functest/docker* and it has
several options::
./run_tests.sh -h
Script to trigger the tests automatically.
usage:
bash run_tests.sh [-h|--help] [-r|--report] [-n|--no-clean] [-t|--test <test_name>]
where:
-h|--help show this help text
-r|--report push results to database (false by default)
-n|--no-clean do not clean up OpenStack resources after test run
-s|--serial run tests in one thread
-t|--test run specific set of tests
<test_name> one or more of the following separated by comma:
vping_ssh,vping_userdata,odl,rally,tempest,vims,onos,promise,ovno
examples:
run_tests.sh
run_tests.sh --test vping,odl
run_tests.sh -t tempest,rally --no-clean
The *-r* option is used by the OPNFV Continuous Integration automation mechanisms
in order to push the test results into the NoSQL results collection database.
This database is read only for a regular user given that it needs special rights
and special conditions to push data.
The *-t* option can be used to specify the list of a desired test to be launched,
by default Functest will launch all the test suites in the following order:
vPing, Tempest, vIMS, Rally.
A single or set of test may be launched at once using *-t <test_name>* specifying
the test name or names separated by commas in the following list:
*[vping,vping_userdata,odl,rally,tempest,vims,onos,promise]*.
The *-n* option is used for preserving all the possible OpenStack resources created
by the tests after their execution.
Please note that Functest includes cleaning mechanism in order to remove
all the VIM resources except what was present before running any test. The script
*$repos_dir/functest/testcases/VIM/OpenStack/CI/libraries/generate_defaults.py*
is called once by *prepare_env.sh* when setting up the Functest environment
to snapshot all the OpenStack resources (images, networks, volumes, security groups,
tenants, users) so that an eventual cleanup does not remove any of this defaults.
The *-s* option forces execution of test cases in a single thread. Currently this
option affects Tempest test cases only and can be used e.g. for troubleshooting
concurrency problems.
The script
*$repos_dir/functest/testcases/VIM/OpenStack/CI/libraries/clean_openstack.py*
is normally called after a test execution if the *-n* is not specified. It
is in charge of cleaning the OpenStack resources that are not specified
in the defaults file generated previously which is stored in
*/home/opnfv/functest/conf/os_defaults.yaml* in the docker
container.
It is important to mention that if there are new OpenStack resources created
manually after preparing the Functest environment, they will be removed if this
flag is not specified in the *run_tests.sh* command.
The reason to include this cleanup meachanism in Functest is because some
test suites such as Tempest or Rally create a lot of resources (users,
tenants, networks, volumes etc.) that are not always properly cleaned, so this
cleaning function has been set to keep the system as clean as it was before a
full Functest execution.
Within the Tempest test suite it is possible to define which test cases to execute
by editing *test_list.txt* file before executing *run_tests.sh* script. This file
is located in *$repos_dir/functest/testcases/VIM/OpenStack/CI/custom_tests/test_list.txt*
Although *run_tests.sh* provides an easy way to run any test, it is possible to
do a direct call to the desired test script. For example::
python $repos_dir/functest/testcases/vPing/vPing.py -d
Automated testing
-----------------
As mentioned in `[1]`, the *prepare-env.sh* and *run_test.sh* can be called within
the container from Jenkins. There are 2 jobs that automate all the manual steps
explained in the previous section. One job runs all the tests and the other one allows testing
test suite by test suite specifying the test name. The user might use one or
the other job to execute the desired test suites.
One of the most challenging task in the Brahmaputra release consists
in dealing with lots of scenarios and installers. Thus, when the tests are
automatically started from CI, a basic algorithm has been created in order to
detect whether a given test is runnable or not on the given scenario.
Some Functest test suites cannot be systematically run (e.g. ODL suite can not
be run on an ONOS scenario).
CI provides some useful information passed to the container as environment
variables:
* Installer (apex|compass|fuel|joid), stored in INSTALLER_TYPE
* Installer IP of the engine or VM running the actual deployment, stored in INSTALLER_IP
* The scenario [controller]-[feature]-[mode], stored in DEPLOY_SCENARIO with
* controller = (odl|onos|ocl|nosdn)
* feature = (ovs(dpdk)|kvm)
* mode = (ha|noha)
The constraints per test case are defined in the Functest configuration file
*/home/opnfv/functest/config/config_functest.yaml*::
test-dependencies:
functest:
vims:
scenario: '(ocl)|(odl)|(nosdn)'
vping:
vping_userdata:
scenario: '(ocl)|(odl)|(nosdn)'
tempest:
rally:
odl:
scenario: 'odl'
onos:
scenario: 'onos'
....
At the end of the Functest environment creation (prepare_env.sh see `[1]`_), a
file */home/opnfv/functest/conf/testcase-list.txt* is created with the list of
all the runnable tests.
Functest considers the static constraints as regular expressions and compare them
with the given scenario name.
For instance, ODL suite can be run only on an scenario including 'odl' in its name.
The order of execution is also described in the Functest configuration file::
test_exec_priority:
1: vping_ssh
2: vping_userdata
3: tempest
4: odl
5: onos
6: ovno
7: doctor
8: promise
9: odl-vpnservice
10: bgpvpn
11: openstack-neutron-bgpvpn-api-extension-tests
12: vims
13: rally
The tests are executed in the following order:
* Basic scenario (vPing_ssh, vPing_userdata, Tempest)
* Controller suites: ODL or ONOS or OpenContrail
* Feature projects (promise, vIMS)
* Rally (benchmark scenario)
As explained before, at the end of an automated execution, the OpenStack resources
might be eventually removed.
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