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diff --git a/doc/dev/developer_guide/running-tests-locally.rst b/doc/dev/developer_guide/running-tests-locally.rst new file mode 100644 index 000000000..b786c12e8 --- /dev/null +++ b/doc/dev/developer_guide/running-tests-locally.rst @@ -0,0 +1,138 @@ +Running Unit Tests +================== + +How to run s3-tests locally +--------------------------- + +RGW code can be tested by building Ceph locally from source, starting a vstart +cluster, and running the "s3-tests" suite against it. + +The following instructions should work on jewel and above. + +Step 1 - build Ceph +^^^^^^^^^^^^^^^^^^^ + +Refer to :doc:`/install/build-ceph`. + +You can do step 2 separately while it is building. + +Step 2 - vstart +^^^^^^^^^^^^^^^ + +When the build completes, and still in the top-level directory of the git +clone where you built Ceph, do the following, for cmake builds:: + + cd build/ + RGW=1 ../src/vstart.sh -n + +This will produce a lot of output as the vstart cluster is started up. At the +end you should see a message like:: + + started. stop.sh to stop. see out/* (e.g. 'tail -f out/????') for debug output. + +This means the cluster is running. + + +Step 3 - run s3-tests +^^^^^^^^^^^^^^^^^^^^^ + +.. highlight:: console + +To run the s3tests suite do the following:: + + $ ../qa/workunits/rgw/run-s3tests.sh + + +Running test using vstart_runner.py +----------------------------------- +CephFS and Ceph Manager code is be tested using `vstart_runner.py`_. + +Running your first test +^^^^^^^^^^^^^^^^^^^^^^^^^^ +The Python tests in Ceph repository can be executed on your local machine +using `vstart_runner.py`_. To do that, you'd need `teuthology`_ installed:: + + $ virtualenv --python=python3 venv + $ source venv/bin/activate + $ pip install 'setuptools >= 12' + $ pip install git+https://github.com/ceph/teuthology#egg=teuthology[test] + $ deactivate + +The above steps installs teuthology in a virtual environment. Before running +a test locally, build Ceph successfully from the source (refer +:doc:`/install/build-ceph`) and do:: + + $ cd build + $ ../src/vstart.sh -n -d -l + $ source ~/path/to/teuthology/venv/bin/activate + +To run a specific test, say `test_reconnect_timeout`_ from +`TestClientRecovery`_ in ``qa/tasks/cephfs/test_client_recovery``, you can +do:: + + $ python ../qa/tasks/vstart_runner.py tasks.cephfs.test_client_recovery.TestClientRecovery.test_reconnect_timeout + +The above command runs vstart_runner.py and passes the test to be executed as +an argument to vstart_runner.py. In a similar way, you can also run the group +of tests in the following manner:: + + $ # run all tests in class TestClientRecovery + $ python ../qa/tasks/vstart_runner.py tasks.cephfs.test_client_recovery.TestClientRecovery + $ # run all tests in test_client_recovery.py + $ python ../qa/tasks/vstart_runner.py tasks.cephfs.test_client_recovery + +Based on the argument passed, vstart_runner.py collects tests and executes as +it would execute a single test. + +vstart_runner.py can take the following options - + +--clear-old-log deletes old log file before running the test +--create create Ceph cluster before running a test +--create-cluster-only creates the cluster and quits; tests can be issued + later +--interactive drops a Python shell when a test fails +--log-ps-output logs ps output; might be useful while debugging +--teardown tears Ceph cluster down after test(s) has finished + runnng +--kclient use the kernel cephfs client instead of FUSE +--brxnet=<net/mask> specify a new net/mask for the mount clients' network + namespace container (Default: 192.168.0.0/16) + +.. note:: If using the FUSE client, ensure that the fuse package is installed + and enabled on the system and that ``user_allow_other`` is added + to ``/etc/fuse.conf``. + +.. note:: If using the kernel client, the user must have the ability to run + commands with passwordless sudo access. A failure on the kernel + client may crash the host, so it's recommended to use this + functionality within a virtual machine. + +Internal working of vstart_runner.py - +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +vstart_runner.py primarily does three things - + +* collects and runs the tests + vstart_runner.py setups/teardowns the cluster and collects and runs the + test. This is implemented using methods ``scan_tests()``, ``load_tests()`` + and ``exec_test()``. This is where all the options that vstart_runner.py + takes are implemented along with other features like logging and copying + the traceback to the bottom of the log. + +* provides an interface for issuing and testing shell commands + The tests are written assuming that the cluster exists on remote machines. + vstart_runner.py provides an interface to run the same tests with the + cluster that exists within the local machine. This is done using the class + ``LocalRemote``. Class ``LocalRemoteProcess`` can manage the process that + executes the commands from ``LocalRemote``, class ``LocalDaemon`` provides + an interface to handle Ceph daemons and class ``LocalFuseMount`` can + create and handle FUSE mounts. + +* provides an interface to operate Ceph cluster + ``LocalCephManager`` provides methods to run Ceph cluster commands with + and without admin socket and ``LocalCephCluster`` provides methods to set + or clear ``ceph.conf``. + +.. _test_reconnect_timeout: https://github.com/ceph/ceph/blob/master/qa/tasks/cephfs/test_client_recovery.py#L133 +.. _TestClientRecovery: https://github.com/ceph/ceph/blob/master/qa/tasks/cephfs/test_client_recovery.py#L86 +.. _teuthology: https://github.com/ceph/teuthology +.. _vstart_runner.py: https://github.com/ceph/ceph/blob/master/qa/tasks/vstart_runner.py |