Add developer guide

JIRA: FUNCTEST-114

Change-Id: I359070c026a7456c73e2a5a27bf15c7ead4a1d35
Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>
(cherry picked from commit c288c8bc9e490ad968e190b2ef9db0415d80ba89)

1 files changed, 280 insertions, 0 deletions

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+******************************
+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
+ * ODL
+ * Tempest
+ * vIMS
+ * Rally
+
+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 an 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
+
+
+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 you 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: vping,odl,rally,tempest,vims,onos, promise. Separated by comma.
+
+
+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
+
+
+==========
+References
+==========
+
+.. _`[1]`: Functest configuration guide URL
+.. _`[2]`: functest user guide URL
+
+
+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
+