path: root/docs/devguide/index.rst

******************************
OPNFV FUNCTEST developer guide
******************************

.. toctree::
   :numbered:
   :maxdepth: 2


============
Introduction
============

This document describes how feature projects aiming to run functional tests can
be integrated into FuncTest framework.


================================
Functest High level architecture
================================

Functest is project delivering a test container dedicated to OPNFV.
It includes the tools, the scripts and the test scenarios.

Functest can be described as follow::

 +----------------------+
 |                      |
 |   +--------------+   |                  +-------------------+
 |   |              |   |    Public        |                   |
 |   | Tools        |   +------------------+      OPNFV        |
 |   | Scripts      |   |                  | System Under Test |
 |   | Scenarios    |   +------------------+                   |
 |   |              |   |    Management    |                   |
 |   +--------------+   |                  +-------------------+
 |                      |
 |    Functest Docker   |
 |                      |
 +----------------------+

Functest deals with internal and external test cases.
The Internal test cases in Brahmaputra are:

 * vPing_SSH
 * vPing_userdata
 * ODL
 * Tempest
 * vIMS
 * Rally

The external tescases are:

 * Promise
 * Doctor
 * Onos
 * BGPVPN

see `[2]`_ for details.

Functest can also be considered as a framework that may include external OPNFV
projects.
This framework will ease the integration of the feature test suite to the CI.

==================
How Functest works
==================

The installation and the launch of the Functest docker image is described in
`[1]`_.

The Functest docker directories are::

 home
    |
    `-- opnfv
        |-- functest
        |   |-- conf
        |   |-- data
        |   `-- results
        `-- repos
            |-- bgpvpn
            |-- doctor
            |-- functest
            |-- odl_integration
            |-- onos
            |-- ovno
            |-- promise
            |-- rally
            |-- releng
            `-- vims-test

::

 +-----------+-------------------+---------------------------------------------+
 | Directory | Subdirectory      | Comments                                    |
 +-----------+-------------------+---------------------------------------------+
 |           | <project>/conf    | All the useful configuration file(s) for    |
 |           |                   | <project> the openstack creds are put there |
 |           |                   | for CI                                      |
 |           |                   | It is recommended to push it there when     |
 |           |                   | passing the credentials to container through|
 |           |                   | the -v option                               |
 |           +-------------------+---------------------------------------------+
 |    opnfv  | <project>/data    | Usefull data, images for <projects>         |
 |           |                   | By default we put a cirros image:           |
 |           |                   | cirros-0.3.4-x86_64-disk.img                |
 |           |                   | This image can be used by any projects      |
 |           +-------------------+---------------------------------------------+
 |           | <project>/results | Local result directory of project <project> |
 +-----------+-------------------+---------------------------------------------+
 |           | bgpvpn            |                                             |
 |           +-------------------+                                             +
 | repos     | doctor            |                                             |
 |           +-------------------+                                             +
 |           | functest          |                                             |
 |           +-------------------+                                             +
 |           | odl_integration   |                                             |
 |           +-------------------+    Clone of the useful repositories         +
 |           | onos              |     These repositories may include:         |
 |           +-------------------+                - tooling                    +
 |           | promise           |                - scenario                   |
 |           +-------------------+                - scripts                    +
 |           | rally             |                                             |
 |           +-------------------+                                             +
 |           | releng            |                                             |
 |           +-------------------+                                             +
 |           | vims-test         |                                             |
 |           +-------------------+                                             +
 |           | <your project>    |                                             |
 +-----------+-------------------+---------------------------------------------+

Before running the test suite, you must prepare the environement by running::

 $ /home/opnfv/repos/functest/docker/prepare_env.sh

By running prepare_env.sh, you build the test environement required by the tests
including the retrieval and sourcing of OpenStack credentials.
This is an example of the env variables we have in the docker container:

 * HOSTNAME=373f77816eb0
 * INSTALLER_TYPE=fuel
 * repos_dir=/home/opnfv/repos
 * INSTALLER_IP=10.20.0.2
 * PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 * PWD=/home/opnfv
 * SHLVL=1
 * HOME=/home/opnfv
 * NODE_NAME=opnfv-jump-2
 * creds=/home/opnfv/functest/conf/openstack.creds
 * _=/usr/bin/env

The prepare_env.sh will source the credentials, so once run you should have
access to the following env variables::

 root@373f77816eb0:~# env|grep OS_
 OS_REGION_NAME=RegionOne
 OS_PROJECT_NAME=admin
 OS_PASSWORD=admin
 OS_AUTH_STRATEGY=keystone
 OS_AUTH_URL=http://172.30.10.70:5000/v2.0
 OS_USERNAME=admin
 OS_TENANT_NAME=admin
 OS_ENDPOINT_TYPE=internalURL
 OS_NO_CACHE=true


Then you may run the test suite by running::

 $ /home/opnfv/repos/functest/docker/run_tests.sh -t <your project>

see `[2]`_ for details.



=========================
How to integrate Functest
=========================

The files of the Functest repository you must modify to integrate Functest are:

 * functest/docker/Dockerfile
 * functest/docker/common.sh
 * functest/docker/requirements.pip
 * functest/docker/run_tests.sh
 * functest/docker/prepare_env.sh
 * functest/config_funtest.yaml


Dockerfile
==========

This file lists the repositories to be cloned in the Functest container.
The repositories can be internal or external::

 RUN git clone https://gerrit.opnfv.org/gerrit/<your porject> ${repos_dir}/<your project>


Common.sh
==========

This file can be used to declare the branch and commit  variables of your
projects::

 <YOUR_PROJECT>_BRANCH=$(cat $config_file | grep -w <your project>_branch | awk 'END {print $NF}')
 <YOUR_PROJECT>_COMMIT=$(cat $config_file | grep -w <your project>_commit | awk 'END {print $NF}')

 echo "<YOUR_PROJECT>_BRANCH=${<YOUR_PROJECT>_BRANCH}"
 echo "<YOUR_PROJECT>_COMMIT=${<YOUR_PROJECT>_COMMIT}"


requirements.pip
================

This file can be used to preloaded all the needed Python libraries (and avoid
that each project does it)
The current libraries used in Functest container are::

 # cat requirements.pip
 pyyaml==3.10
 gitpython==1.0.1
 python-neutronclient==2.6.0
 python-novaclient==2.28.1
 python-glanceclient==1.1.0
 python-cinderclient==1.4.0
 python-ceilometerclient==1.5.1
 python-keystoneclient==1.6.0
 virtualenv==1.11.4
 pexpect==4.0
 requests==2.8.0
 robotframework==2.9.1
 robotframework-requests==0.3.8
 robotframework-sshlibrary==2.1.1
 configObj==5.0.6
 Flask==0.10.1
 xmltodict==0.9.2
 scp==0.10.2
 paramiko==1.16.0


prepare_env.sh
==============

This script can be adapted if you need to set up a specific environment before
running the tests.

run_tests.sh
============

This script is used to run the tests. You must thus complete the cases with your
own project::

 ;;
    "promise")
        info "Running PROMISE test case..."
        # TODO
    ;;
    "doctor")
        info "Running Doctor test..."
        python ${FUNCTEST_REPO_DIR}/testcases/features/doctor.py
    ;;
    "<your project>")
        info "Running <your project> test..."
        # your script that launchs your tests...
    ;;

And do not forget to update also the help line::

 -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


config_funtest.yaml
===================

This file is the main configuration file of Functest. You must add the
references to your project::

 general:
    directories:
        dir_repo_<your project>:      /home/opnfv/repos/<your project>
     repositories:
        # branch and commit ID to which the repos will be reset (HEAD)
        <your project>_branch:   master
        <your project>_commit:   latest


====================
Test Dashboard & API
====================

The OPNFV testing group created a test collection database to collect the test
results from CI.
Any test project running on any lab integrated in CI can push the results to
this database.
This database can be used afterwards to see the evolution of the tests and
compare the results versus the installers, the scenario or the labs.

You can find more information about the dashboard from Testing Dashboard wiki
page `[3]`_.


Overall Architecture
--------------------

The Test result management in Brahmaputra can be summarized as follows::

  +-------------+    +-------------+    +-------------+
  |             |    |             |    |             |
  |   Test      |    |   Test      |    |   Test      |
  | Project #1  |    | Project #2  |    | Project #N  |
  |             |    |             |    |             |
  +-------------+    +-------------+    +-------------+
           |               |               |
           V               V               V
       +-----------------------------------------+
       |                                         |
       |         Test Rest API front end         |
       |  http://testresults.opnfv.org/testapi   |
       |                                         |
       +-----------------------------------------+
           A                |
           |                V
           |     +-------------------------+
           |     |                         |
           |     |    Test Results DB      |
           |     |         Mongo DB        |
           |     |                         |
           |     +-------------------------+
           |
           |
     +----------------------+
     |                      |
     |    test Dashboard    |
     |                      |
     +----------------------+

The Test dashboard URL is: TODO LF
A alternate Test dashboard has been realized to provide a view per installer and
per scenario for Brahmaputra release::

  http://testresults.opnfv.org/proto/brahma/

This Dashboard consumes the results retrieved thanks to the Test API.

Test API description
--------------------

The Test API is used to declare pods, projects, test cases and test results. An
additional method dashboard has been added to post-process the raw results. The
data model is very basic, 4 objects are created:

  * Pods
  * Test projects
  * Test cases
  * Test results

Pods::

  {
    "id": <ID>,
    "details": <URL description of the POD>,
    "creation_date": YYYY-MM-DD HH:MM:SS ,
    "name": <The POD Name>,
    "mode": <metal or virtual>
  },

Test project::

  {
    "id": <ID>,
    "name": <Name of the Project>,
    "creation_date": "YYYY-MM-DD HH:MM:SS",
    "description": <Short description>
  },

Test case::

  {
    "id": <ID>,
    "name":<Name of the test case>,
    "creation_date": "YYYY-MM-DD HH:MM:SS",
    "description": <short description>,
    "url":<URL for longer description>
  },

Test results::

  {
    "_id": <ID,
    "project_name": <Reference to project>,
    "pod_name": <Reference to POD where the test was executed>,
    "version": <Scenario on which the test was executed>,
    "installer": <Installer Apex or Compass or Fuel or Joid>,
    "description": <Short description>,
    "creation_date": "YYYY-MM-DD HH:MM:SS",
    "case_name": <Reference to the test case>
    "details":{
       <- the results to be put here ->
    }


For Brahmaputra, we got:

 * 16 pods
 * 18 projects
 * 101 test cases

The projects and the test cases have been frozen in December.
But all were not ready for Brahmaputra.



The API can described as follows:

Version:

 +--------+--------------------------+-----------------------------------------+
 | Method | Path                     | Description                             |
 +========+==========================+=========================================+
 | GET    | /version                 | Get API version                         |
 +--------+--------------------------+-----------------------------------------+


Pods:

 +--------+--------------------------+-----------------------------------------+
 | Method | Path                     | Description                             |
 +========+==========================+=========================================+
 | GET    | /pods                    | Get the list of declared Labs (PODs)    |
 +--------+--------------------------+-----------------------------------------+
 | POST   | /pods                    | Declare a new POD                       |
 |        |                          | Content-Type: application/json          |
 |        |                          | {                                       |
 |        |                          |   "name": "pod_foo",                    |
 |        |                          |   "creation_date": "YYYY-MM-DD HH:MM:SS"|
 |        |                          | }                                       |
 +--------+--------------------------+-----------------------------------------+

Projects:

 +--------+--------------------------+-----------------------------------------+
 | Method | Path                     | Description                             |
 +========+==========================+=========================================+
 | GET    | /test_projects           | Get the list of test projects           |
 +--------+--------------------------+-----------------------------------------+
 | GET    |/test_projects/{project}  | Get details on {project}                |
 |        |                          |                                         |
 +--------+--------------------------+-----------------------------------------+
 | POST   | /test_projects           | Add a new test project                  |
 |        |                          | Content-Type: application/json          |
 |        |                          | {                                       |
 |        |                          |    "name": "project_foo",               |
 |        |                          |    "description": "whatever you want"   |
 |        |                          | }                                       |
 +--------+--------------------------+-----------------------------------------+
 | PUT    | /test_projects/{project} | Update a test project                   |
 |        |                          |                                         |
 |        |                          | Content-Type: application/json          |
 |        |                          | {                                       |
 |        |                          |    <the field(s) you want to modify>    |
 |        |                          | }                                       |
 +--------+--------------------------+-----------------------------------------+
 | DELETE | /test_projects/{project} | Delete a test project                   |
 +--------+--------------------------+-----------------------------------------+


Test cases:

 +--------+--------------------------+-----------------------------------------+
 | Method | Path                     | Description                             |
 +========+==========================+=========================================+
 | GET    | /test_projects/{project}/| Get the list of test cases of {project} |
 |        | cases                    |                                         |
 +--------+--------------------------+-----------------------------------------+
 | POST   | /test_projects/{project}/| Add a new test case to {project}        |
 |        | cases                    | Content-Type: application/json          |
 |        |                          | {                                       |
 |        |                          |   "name": "case_foo",                   |
 |        |                          |   "description": "whatever you want"    |
 |        |                          |   "creation_date": "YYYY-MM-DD HH:MM:SS"|
 |        |                          |   "url": "whatever you want"            |
 |        |                          | }                                       |
 +--------+--------------------------+-----------------------------------------+
 | PUT    | /test_projects/{project}?| Modify a test case of {project}         |
 |        | case_name={case}         |                                         |
 |        |                          | Content-Type: application/json          |
 |        |                          | {                                       |
 |        |                          |    <the field(s) you want to modify>    |
 |        |                          | }                                       |
 +--------+--------------------------+-----------------------------------------+
 | DELETE | /test_projects/{project}/| Delete a test case                      |
 |        | case_name={case}         |                                         |
 +--------+--------------------------+-----------------------------------------+

Test Results:

 +--------+--------------------------+-----------------------------------------+
 | Method | Path                     | Description                             |
 +========+==========================+=========================================+
 | GET    |/results/project={project}| Get the test results of {project}       |
 +--------+--------------------------+-----------------------------------------+
 | GET    |/results/case={case}      | Get the test results of {case}          |
 +--------+--------------------------+-----------------------------------------+
 | GET    |/results?pod={pod}        | get the results on pod {pod}            |
 +--------+--------------------------+-----------------------------------------+
 | GET    |/results?installer={inst} | Get the test results of installer {inst}|
 +--------+--------------------------+-----------------------------------------+
 | GET    |/results?version={version}| Get the test results of scenario        |
 |        |                          | {version}. Initially the version param  |
 |        |                          | was reflecting git version, in Functest |
 |        |                          | it was decided to move to scenario      |
 +--------+--------------------------+-----------------------------------------+
 | GET    |/results?project={project}| Get all the results of the test case    |
 |        |&case={case}              | {case} of the project {project} with    |
 |        |&version={scenario}       | version {scenario} installed by         |
 |        |&installer={installer}    | {installer} on POD {pod} stored since   |
 |        |&pod={pod}                | {days} days                             |
 |        |                          | {project_name} and {case_name} are      |
 |        |&period={days}            | mandatory, the other parameters are     |
 |        |                          | optional.                               |
 +--------+--------------------------+-----------------------------------------+
 | POST   | /results                 | Add a new test results                  |
 |        |                          | Content-Type: application/json          |
 |        |                          | {                                       |
 |        |                          |    "project_name": "project_foo",       |
 |        |                          |    "case_name": "case_foo",             |
 |        |                          |    "pod_name": "pod_foo",               |
 |        |                          |    "installer": "installer_foo",        |
 |        |                          |    "version": "scenario_foo",           |
 |        |                          |    "details": <your results>            |
 |        |                          | }                                       |
 +--------+--------------------------+-----------------------------------------+


Dashboard:

 +--------+--------------------------+-----------------------------------------+
 | Method | Path                     | Description                             |
 +========+==========================+=========================================+
 | GET    |/dashboard?               | Get all the dashboard ready results of  |
 |        |&project={project}        | {case} of the project {project}         |
 |        |&case={case}              | version {scenario} installed by         |
 |        |&version={scenario}       | {installer} on POD {pod} stored since   |
 |        |&installer={installer}    | {days} days                             |
 |        |&pod={pod}                |                                         |
 |        |&period={days}            | {project_name} and {case_name} are      |
 |        |                          | mandatory, the other parameters are     |
 |        |                          | optional.                               |
 +--------+--------------------------+-----------------------------------------+


The results with dashboard method are post-processed from raw results.
Please note that dashboard results are not stored. Only raw results are stored.


===============================================
How to push your results into the Test Database
===============================================

The test database is used to collect test results. By default it is enabled only
in Continuous Integration.
The architecture and associated API is described in `[2]`_.
If you want to push your results from CI, you just have to use the API at the
end of your script.

You can also reuse a python function defined in functest_utils.py::

  def push_results_to_db(db_url, case_name, logger, pod_name,version, payload):
    """
    POST results to the Result target DB
    """
    url = db_url + "/results"
    installer = get_installer_type(logger)
    params = {"project_name": "functest", "case_name": case_name,
              "pod_name": pod_name, "installer": installer,
              "version": version, "details": payload}

    headers = {'Content-Type': 'application/json'}
    try:
        r = requests.post(url, data=json.dumps(params), headers=headers)
        if logger:
            logger.debug(r)
        return True
    except Exception, e:
        print "Error [push_results_to_db('%s', '%s', '%s', '%s', '%s')]:" \
            % (db_url, case_name, pod_name, version, payload), e
        return False

::

==========
References
==========

.. _`[1]`: http://artifacts.opnfv.org/functest/docs/configguide/index.html Functest configuration guide URL
.. _`[2]`: http://artifacts.opnfv.org/functest/docs/userguide/index.html functest user guide URL
.. _`[3]`: https://wiki.opnfv.org/opnfv_test_dashboard


OPNFV main site: opnfvmain_.

OPNFV functional test page: opnfvfunctest_.

IRC support chan: #opnfv-testperf

.. _opnfvmain: http://www.opnfv.org
.. _opnfvfunctest: https://wiki.opnfv.org/opnfv_functional_testing
.. _`OpenRC`: http://docs.openstack.org/user-guide/common/cli_set_environment_variables_using_openstack_rc.html
.. _`Rally installation procedure`: https://rally.readthedocs.org/en/latest/tutorial/step_0_installation.html
.. _`config_test.py` : https://git.opnfv.org/cgit/functest/tree/testcases/config_functest.py
.. _`config_functest.yaml` : https://git.opnfv.org/cgit/functest/tree/testcases/config_functest.yaml