[functest.git] / docs / testing / user / userguide / test_details.rst

.. SPDX-License-Identifier: CC-BY-4.0

The different test cases are described in the remaining sections of this
document.

VIM (Virtualized Infrastructure Manager)
----------------------------------------

Healthcheck tests
^^^^^^^^^^^^^^^^^
Since Danube, healthcheck tests have been refactored and rely on SNAPS, an
OPNFV middleware project.

SNAPS stands for "SDN/NFV Application development Platform and Stack".
SNAPS is an object-oriented OpenStack library packaged with tests that exercise
OpenStack.
More information on SNAPS can be found in  `[13]`_

Three tests are declared as healthcheck tests and can be used for gating by the
installer, they cover functionally the tests previously done by healthcheck
test case.

The tests are:


 * *connection_check*
 * *api_check*
 * *snaps_health_check*

Connection_check consists in 9 test cases (test duration < 5s) checking the
connectivity with Glance, Keystone, Neutron, Nova and the external network.

Api_check verifies the retrieval of OpenStack clients: Keystone, Glance,
Neutron and Nova and may perform some simple queries. When the config value of
snaps.use_keystone is True, functest must have access to the cloud's private
network. This suite consists in 49 tests (test duration < 2 minutes).

Snaps_health_check creates a VM with a single port with an IPv4 address that
is assigned by DHCP and then validates the expected IP with the actual.

Self-obviously, successful completion of the 'healthcheck' testcase is a
necessary pre-requisite for the execution of all other test Tiers.


vPing_ssh
^^^^^^^^^

Given the script **ping.sh**::

    #!/bin/sh
    ping -c 1 $1 2>&1 >/dev/null
    RES=$?
    if [ "Z$RES" = "Z0" ] ; then
        echo 'vPing OK'
    else
        echo 'vPing KO'
    fi


The goal of this test is to establish an SSH connection using a floating IP
on the Public/External network and verify that 2 instances can talk over a
Private Tenant network::

 vPing_ssh test case
 +-------------+                    +-------------+
 |             |                    |             |
 |             | Boot VM1 with IP1  |             |
 |             +------------------->|             |
 |   Tester    |                    |   System    |
 |             | Boot VM2           |    Under    |
 |             +------------------->|     Test    |
 |             |                    |             |
 |             | Create floating IP |             |
 |             +------------------->|             |
 |             |                    |             |
 |             | Assign floating IP |             |
 |             | to VM2             |             |
 |             +------------------->|             |
 |             |                    |             |
 |             | Establish SSH      |             |
 |             | connection to VM2  |             |
 |             | through floating IP|             |
 |             +------------------->|             |
 |             |                    |             |
 |             | SCP ping.sh to VM2 |             |
 |             +------------------->|             |
 |             |                    |             |
 |             | VM2 executes       |             |
 |             | ping.sh to VM1     |             |
 |             +------------------->|             |
 |             |                    |             |
 |             |    If ping:        |             |
 |             |      exit OK       |             |
 |             |    else (timeout): |             |
 |             |      exit Failed   |             |
 |             |                    |             |
 +-------------+                    +-------------+

This test can be considered as an "Hello World" example.
It is the first basic use case which **must** work on any deployment.

vPing_userdata
^^^^^^^^^^^^^^

This test case is similar to vPing_ssh but without the use of Floating IPs
and the Public/External network to transfer the ping script.
Instead, it uses Nova metadata service to pass it to the instance at booting
time.
As vPing_ssh, it checks that 2 instances can talk to
each other on a Private Tenant network::

 vPing_userdata test case
 +-------------+                     +-------------+
 |             |                     |             |
 |             | Boot VM1 with IP1   |             |
 |             +-------------------->|             |
 |             |                     |             |
 |             | Boot VM2 with       |             |
 |             | ping.sh as userdata |             |
 |             | with IP1 as $1.     |             |
 |             +-------------------->|             |
 |   Tester    |                     |   System    |
 |             | VM2 executes ping.sh|    Under    |
 |             | (ping IP1)          |     Test    |
 |             +-------------------->|             |
 |             |                     |             |
 |             | Monitor nova        |             |
 |             |  console-log VM 2   |             |
 |             |    If ping:         |             |
 |             |      exit OK        |             |
 |             |    else (timeout)   |             |
 |             |      exit Failed    |             |
 |             |                     |             |
 +-------------+                     +-------------+

When the second VM boots it will execute the script passed as userdata
automatically. The ping will be detected by periodically capturing the output
in the console-log of the second VM.


Tempest
^^^^^^^

Tempest `[2]`_ is the reference OpenStack Integration test suite.
It is a set of integration tests to be run against a live OpenStack cluster.
Tempest has suites of tests for:

  * OpenStack API validation
  * Scenarios
  * Other specific tests useful in validating an OpenStack deployment

Functest uses Rally `[3]`_ to run the Tempest suite.
Rally generates automatically the Tempest configuration file **tempest.conf**.
Before running the actual test cases,
Functest creates the needed resources (user, tenant) and
updates the appropriate parameters into the configuration file.

When the Tempest suite is executed, each test duration is measured and the full
console output is stored to a *log* file for further analysis.

The Tempest testcases are distributed across three
Tiers:

  * Smoke Tier - Test Case 'tempest_smoke_serial'
  * Components Tier - Test case 'tempest_full_parallel'
  * Neutron Trunk Port - Test case 'neutron_trunk'

NOTE: Test case 'tempest_smoke_serial' executes a defined set of tempest smoke
tests with a single thread (i.e. serial mode). Test case
'tempest_full_parallel' executes all defined Tempest tests using several
concurrent threads (i.e. parallel mode). The number of threads activated
corresponds to the number of available logical CPUs.

NOTE: The 'neutron_trunk' test set allows to connect a VM to multiple VLAN
separated networks using a single NIC. The feature neutron trunk ports have
been supported by Apex, Fuel and Compass, so the tempest testcases have been
integrated normally.

The goal of the Tempest test suite is to check the basic functionalities of the
different OpenStack components on an OPNFV fresh installation, using the
corresponding REST API interfaces.


Rally bench test suites
^^^^^^^^^^^^^^^^^^^^^^^

Rally `[3]`_ is a benchmarking tool that answers the question:

*How does OpenStack work at scale?*

The goal of this test suite is to benchmark all the different OpenStack modules
and get significant figures that could help to define Telco Cloud KPIs.

The OPNFV Rally scenarios are based on the collection of the actual Rally
scenarios:

 * authenticate
 * cinder
 * glance
 * heat
 * keystone
 * neutron
 * nova
 * quotas
 * ceilometer

A basic SLA (stop test on errors) has been implemented.

The Rally testcases are distributed across two Tiers:

  * Smoke Tier - Test Case 'rally_sanity'
  * Components Tier - Test case 'rally_full'

NOTE: Test case 'rally_sanity' executes a limited number of Rally smoke test
cases. Test case 'rally_full' executes the full defined set of Rally tests.


Refstack-client to run OpenStack interop testcases
--------------------------------------------------

Refstack-client `[8]`_ is a command line utility that allows you to
execute Tempest test runs based on configurations you specify.
It is the official tool to run Openstack Interop (previously known as Defcore)
testcases `[9]`_, which focus on testing interoperability between OpenStack
clouds.

Refstack-client is integrated in Functest, consumed by Dovetail, which
intends to define and provide a set of OPNFV related validation criteria
that will provide input for the evaluation of the use of OPNFV trademarks.
This progress is under the guideline of Compliance Verification Program(CVP).

Running methods
^^^^^^^^^^^^^^^

Two running methods are provided after refstack-client integrated into
Functest, Functest command line and manually, respectively.

By default, for Defcore test cases run by Functest command line,
are run followed with automatically generated
configuration file, i.e., refstack_tempest.conf. In some circumstances,
the automatic configuration file may not quite satisfied with the SUT,
Functest also inherits the refstack-client command line and provides a way
for users to set its configuration file according to its own SUT manually.

*command line*

Inside the Functest container, first to prepare Functest environment:

::

  functest env prepare

then to run default defcore testcases by using refstack-client:

::

  functest testcase run refstack_defcore

In OPNFV Continuous Integration(CI) system, the command line method is used.

*manually*

Prepare the tempest configuration file and the testcases want to run with the
SUT, run the testcases with:

::

  ./refstack-client test -c <Path of the tempest configuration file to use> -v --test-list <Path or URL of test list>

using help for more information:

::

  ./refstack-client --help
  ./refstack-client test --help

Reference tempest configuration
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

*command line method*

When command line method is used, the default tempest configuration file
is generated by Rally.

*manually*

When running manually is used, recommended way to generate tempest
configuration file is:

::

  cd /usr/lib/python2.7/site-packages/functest/opnfv_tests/openstack/refstack_client
  python tempest_conf.py

a file called tempest.conf is stored in the current path by default, users can
do some adjustment according to the SUT:

::

  vim refstack_tempest.conf

a reference article can be used `[15]`_.


snaps_smoke
------------

This test case contains tests that setup and destroy environments with VMs with
and without Floating IPs with a newly created user and project. Set the config
value snaps.use_floating_ips (True|False) to toggle this functionality.
Please note that when the configuration value of snaps.use_keystone is True,
Functest must have access the cloud's private network.
This suite consists in 38 tests (test duration < 10 minutes)


SDN Controllers
---------------

OpenDaylight
^^^^^^^^^^^^

The OpenDaylight (ODL) test suite consists of a set of basic tests inherited
from the ODL project using the Robot `[11]`_ framework.
The suite verifies creation and deletion of networks, subnets and ports with
OpenDaylight and Neutron.

The list of tests can be described as follows:

 * Basic Restconf test cases

   * Connect to Restconf URL
   * Check the HTTP code status

 * Neutron Reachability test cases

   * Get the complete list of neutron resources (networks, subnets, ports)

 * Neutron Network test cases

   * Check OpenStack networks
   * Check OpenDaylight networks
   * Create a new network via OpenStack and check the HTTP status code returned
     by Neutron
   * Check that the network has also been successfully created in OpenDaylight

 * Neutron Subnet test cases

   * Check OpenStack subnets
   * Check OpenDaylight subnets
   * Create a new subnet via OpenStack and check the HTTP status code returned
     by Neutron
   * Check that the subnet has also been successfully created in OpenDaylight

 * Neutron Port test cases

   * Check OpenStack Neutron for known ports
   * Check OpenDaylight ports
   * Create a new port via OpenStack and check the HTTP status code returned by
     Neutron
   * Check that the new port has also been successfully created in OpenDaylight

 * Delete operations

   * Delete the port previously created via OpenStack
   * Check that the port has been also successfully deleted in OpenDaylight
   * Delete previously subnet created via OpenStack
   * Check that the subnet has also been successfully deleted in OpenDaylight
   * Delete the network created via OpenStack
   * Check that the network has also been successfully deleted in OpenDaylight

Note: the checks in OpenDaylight are based on the returned HTTP status
code returned by OpenDaylight.


Features
--------

Functest has been supporting several feature projects since Brahmaputra:


+-----------------+---------+----------+--------+-----------+
| Test            | Brahma  | Colorado | Danube | Euphrates |
+=================+=========+==========+========+===========+
| barometer       |         |          |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| bgpvpn          |         |    X     |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| copper          |         |    X     |        |           |
+-----------------+---------+----------+--------+-----------+
| doctor          |    X    |    X     |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| domino          |         |    X     |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| fds             |         |          |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| moon            |         |    X     |        |           |
+-----------------+---------+----------+--------+-----------+
| multisite       |         |    X     |    X   |           |
+-----------------+---------+----------+--------+-----------+
| netready        |         |          |    X   |           |
+-----------------+---------+----------+--------+-----------+
| odl_sfc         |         |    X     |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| opera           |         |          |    X   |           |
+-----------------+---------+----------+--------+-----------+
| orchestra       |         |          |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| parser          |         |          |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| promise         |    X    |    X     |    X   |     X     |
+-----------------+---------+----------+--------+-----------+
| security_scan   |         |    X     |    X   |           |
+-----------------+---------+----------+--------+-----------+

Please refer to the dedicated feature user guides for details.


VNF
---


cloudify_ims
^^^^^^^^^^^^
The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem (IMS) is an
architectural framework for delivering IP multimedia services.

vIMS has been integrated in Functest to demonstrate the capability to deploy a
relatively complex NFV scenario on the OPNFV platform. The deployment of a
complete functional VNF allows the test of most of the essential functions
needed for a NFV platform.

The goal of this test suite consists of:

 * deploy a VNF orchestrator (Cloudify)
 * deploy a Clearwater vIMS (IP Multimedia Subsystem) VNF from this
   orchestrator based on a TOSCA blueprint defined in `[5]`_
 * run suite of signaling tests on top of this VNF

The Clearwater architecture is described as follows:

.. figure:: ../../../images/clearwater-architecture.png
   :align: center
   :alt: vIMS architecture


cloudify_ims_perf
^^^^^^^^^^^^^^^^^
This testcase extends the cloudify_ims test case.
The first part is similar but the testing part is different.
The testing part consists in automating a realistic signaling load on the vIMS
using an Ixia loader (proprietary tools)

 - You need to have access to an Ixia licence server defined in the
   configuration file and have ixia image locally.

This test case is available but not declared in testcases.yaml. The declaration
of the testcase is simple, connect to your functest-vnf docker, add the
following section in
/usr/lib/python2.7/site-packacges/functest/ci/testcases.yaml::

  -
      case_name: cloudify_ims_perf
      project_name: functest
      criteria: 80
      blocking: false
      description: >-
          Stress tests based on Cloudify. Ixia loader images and access to Ixia
          server license.
      dependencies:
          installer: ''
          scenario: 'os-nosdn-nofeature-ha'
      run:
          module: 'functest.opnfv_tests.vnf.ims.cloudify_ims_perf'
          class: 'CloudifyImsPerf'

orchestra_openims
^^^^^^^^^^^^^^^^^
Orchestra test case deals with the deployment of OpenIMS with OpenBaton
orchestrator.

orchestra_clearwaterims
^^^^^^^^^^^^^^^^^^^^^^^
Orchestra test case deals with the deployment of Clearwater vIMS with OpenBaton
orchestrator.

vyos-vrouter
^^^^^^^^^^^^
This test case deals with the deployment and the test of vyos vrouter with
Cloudify orchestrator. The test case can do testing for interchangeability of
BGP Protocol using vyos.

The Workflow is as follows:
 * Deploy
    Deploy VNF Testing topology by Cloudify using blueprint.
 * Configuration
    Setting configuration to Target VNF and reference VNF using ssh
 * Run
    Execution of test command for test item written YAML format  file.
    Check VNF status and behavior.
 * Reporting
    Output of report based on result using JSON format.

The vyos-vrouter architecture is described in `[14]`_


.. _`[2]`: http://docs.openstack.org/developer/tempest/overview.html
.. _`[3]`: https://rally.readthedocs.org/en/latest/index.html
.. _`[5]`: https://github.com/Orange-OpenSource/opnfv-cloudify-clearwater/blob/master/openstack-blueprint.yaml
.. _`[8]`: https://github.com/openstack/refstack-client
.. _`[9]`: https://github.com/openstack/defcore
.. _`[10]`: https://github.com/openstack/interop/blob/master/2016.08/procedure.rst
.. _`[11]`: http://robotframework.org/
.. _`[12]`: http://docs.opnfv.org/en/latest/submodules/functest/docs/testing/user/userguide/index.html
.. _`[13]`: https://wiki.opnfv.org/display/PROJ/SNAPS-OO
.. _`[14]`: https://github.com/oolorg/opnfv-functest-vrouter
.. _`[15]`: https://aptira.com/testing-openstack-tempest-part-1/