diff --git a/docs/developer-setup.rst b/docs/developer-setup.rst
index 63e6066..b61eeda 100644
--- a/docs/developer-setup.rst
+++ b/docs/developer-setup.rst
@@ -1,201 +1,200 @@
.. _developer-setup:
Developer setup
===============
In this guide we describe how to set up a developer environment in which one
can easily navigate the source code, make modifications, write and execute unit
tests.
For this, we will use a `virtualenv`_ in which all the |swh| packages will be
installed in 'develop' mode, this will allow you to navigate the source code,
hack it, and run locally the unit tests.
If you want to test the effect of your modifications in a running |swh|
instance, you should check the `documentation`_ of the swh-docker-dev_ project.
.. _`documentation`: https://forge.softwareheritage.org/source/swh-docker-dev/browse/master/README.md?as=remarkup
.. _`swh-docker-dev`: https://forge.softwareheritage.org/source/swh-docker-dev
.. _`virtualenv`: https://pypi.org/project/virtualenv/
Install required dependencies
-----------------------------
Software Heritage requires some dependencies that are usually packaged by your
package manager. On Debian/Ubuntu-based distributions::
sudo wget https://www.postgresql.org/media/keys/ACCC4CF8.asc -O /etc/apt/trusted.gpg.d/postgresql.asc
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
sudo apt update
sudo apt install python3 python3-venv libsvn-dev postgresql-11 \
libsystemd-dev libpython3-dev graphviz postgresql-autodoc \
postgresql-server-dev-all virtualenvwrapper git build-essential \
pkg-config myrepos
Checkout the source code
------------------------
Clone the |swh| environment repository::
~$ git clone https://forge.softwareheritage.org/source/swh-environment.git
[...]
~$ cd swh-environment
~/swh-environment$
Checkout all the swh packages source repositories::
~/swh-environment$ ./bin/update
Create a virtualenv::
~/swh-environment$ mkvirtualenv -p /usr/bin/python3 -a $PWD swh
[...]
(swh) ~/swh-environment$
.. Note:: using virtualenvwrapper_ is not mandatory here. You can use plain
virtualenvs, or any other venv management tool (pipenv_ or poetry_
for example). Using a tool such as virtualenvwrapper_ just makes life
easier...
.. _virtualenvwrapper: https://virtualenvwrapper.readthedocs.io/
.. _poetry: https://poetry.eustace.io/
.. _pipenv: https://pipenv.readthedocs.io/
Install all the swh packages (in develop mode)::
- (swh) ~/swh-environment$ pip install $(./bin/pip-swh-packages --with-testing) \
- tox pifpaf flake8
+ (swh) ~/swh-environment$ pip install flake8 pifpaf tox wheel
+ (swh) ~/swh-environment$ pip install $(./bin/pip-swh-packages --with-testing)
[...]
-
Executing unit tests
--------------------
Unit tests are using the pytest_ framework, and can be executed directly or via
tox_. The main difference between these 2 test execution environments is:
- When executed via tox_, all the dependencies (including swh ones) are
installed from pypi_: you test your modifications against the latest
published version of every swh package but the current one.
- When you execute pytest_ directly, swh dependencies are used from your
current virtualenv, installed from the git repositories: you test your
modification against the HEAD of every swh package.
For example, running unit tests for the swh-loader-git_ package::
(swh) ~/swh-environment$ cd swh-loader-git
(swh) ~/swh-environment/swh-loader-git$ pytest
=========================== test session starts ============================
platform linux -- Python 3.5.3, pytest-3.8.2, py-1.6.0, pluggy-0.7.1
hypothesis profile 'default' -> database=DirectoryBasedExampleDatabase('/home/ddouard/src/swh-environment/swh-loader-git/.hypothesis/examples')
rootdir: /home/ddouard/src/swh-environment/swh-loader-git, inifile: pytest.ini
plugins: requests-mock-1.5.2, postgresql-1.3.4, env-0.6.2, django-3.4.7, cov-2.6.0, pylama-7.6.5, hypothesis-3.76.0, celery-4.2.1
collected 25 items
swh/loader/git/tests/test_converters.py ........ [ 32%]
swh/loader/git/tests/test_from_disk.py ..... [ 52%]
swh/loader/git/tests/test_loader.py ...... [ 76%]
swh/loader/git/tests/test_tasks.py ... [ 88%]
swh/loader/git/tests/test_utils.py ... [100%]
============================= warnings summary =============================
[...]
================== 25 passed, 12 warnings in 6.66 seconds ==================
Running the same test, plus flake8 checks, using tox::
(swh) ~/swh-environment/swh-loader-git$ tox
GLOB sdist-make: ~/swh-environment/swh-loader-git/setup.py
flake8 create: ~/swh-environment/swh-loader-git/.tox/flake8
flake8 installdeps: flake8
flake8 installed: entrypoints==0.3,flake8==3.7.7,mccabe==0.6.1,pycodestyle==2.5.0,pyflakes==2.1.1,swh.loader.git==0.0.48.post3
flake8 run-test-pre: PYTHONHASHSEED='2028963506'
flake8 runtests: commands[0] | ~/swh-environment/swh-loader-git/.tox/flake8/bin/python -m flake8
py3 create: ~/swh-environment/swh-loader-git/.tox/py3
py3 installdeps: .[testing], pytest-cov
py3 inst: ~/swh-environment/swh-loader-git/.tox/.tmp/package/1/swh.loader.git-0.0.48.post3.zip
py3 installed: aiohttp==3.5.4,amqp==2.4.2,arrow==0.13.1,async-timeout==3.0.1,atomicwrites==1.3.0,attrs==19.1.0,billiard==3.5.0.5,celery==4.2.1,certifi==2018.11.29,chardet==3.0.4,Click==7.0,coverage==4.5.2,decorator==4.3.2,dulwich==0.19.11,elasticsearch==6.3.1,Flask==1.0.2,idna==2.8,idna-ssl==1.1.0,itsdangerous==1.1.0,Jinja2==2.10,kombu==4.4.0,MarkupSafe==1.1.1,more-itertools==6.0.0,msgpack-python==0.5.6,multidict==4.5.2,pathlib2==2.3.3,pluggy==0.9.0,psutil==5.6.0,psycopg2==2.7.7,py==1.8.0,pytest==3.10.1,pytest-cov==2.6.1,python-dateutil==2.8.0,pytz==2018.9,PyYAML==3.13,requests==2.21.0,retrying==1.3.3,six==1.12.0,swh.core==0.0.55,swh.loader.core==0.0.39,swh.loader.git==0.0.48.post3,swh.model==0.0.30,swh.objstorage==0.0.30,swh.scheduler==0.0.49,swh.storage==0.0.129,systemd-python==234,typing-extensions==3.7.2,urllib3==1.24.1,vcversioner==2.16.0.0,vine==1.2.0,Werkzeug==0.14.1,yarl==1.3.0
py3 run-test-pre: PYTHONHASHSEED='2028963506'
py3 runtests: commands[0] | pytest --cov=swh --cov-branch
=========================== test session starts ============================
platform linux -- Python 3.5.3, pytest-3.10.1, py-1.8.0, pluggy-0.9.0
rootdir: ~/swh-environment/swh-loader-git, inifile: pytest.ini
plugins: cov-2.6.1, celery-4.2.1
collected 25 items
swh/loader/git/tests/test_converters.py ........ [ 32%]
swh/loader/git/tests/test_from_disk.py ..... [ 52%]
swh/loader/git/tests/test_loader.py ...... [ 76%]
swh/loader/git/tests/test_tasks.py ... [ 88%]
swh/loader/git/tests/test_utils.py ... [100%]
----------- coverage: platform linux, python 3.5.3-final-0 -----------
Name Stmts Miss Branch BrPart Cover
---------------------------------------------------------------------------
swh/__init__.py 1 0 0 0 100%
swh/loader/__init__.py 1 0 0 0 100%
swh/loader/git/__init__.py 0 0 0 0 100%
swh/loader/git/converters.py 102 10 44 7 86%
swh/loader/git/from_disk.py 157 44 50 6 67%
swh/loader/git/loader.py 271 59 114 17 75%
swh/loader/git/tasks.py 14 0 0 0 100%
swh/loader/git/tests/__init__.py 1 0 0 0 100%
swh/loader/git/tests/conftest.py 4 0 0 0 100%
swh/loader/git/tests/test_converters.py 94 0 6 0 100%
swh/loader/git/tests/test_from_disk.py 100 4 0 0 96%
swh/loader/git/tests/test_loader.py 12 0 0 0 100%
swh/loader/git/tests/test_tasks.py 26 0 0 0 100%
swh/loader/git/tests/test_utils.py 14 0 2 0 100%
swh/loader/git/utils.py 25 8 8 1 61%
---------------------------------------------------------------------------
TOTAL 822 125 224 31 80%
============================= warnings summary =============================
.tox/py3/lib/python3.5/site-packages/psycopg2/__init__.py:144
~/swh-environment/swh-loader-git/.tox/py3/lib/python3.5/site-packages/psycopg2/__init__.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: <http://initd.org/psycopg/docs/install.html#binary-install-from-pypi>.
""")
-- Docs: https://docs.pytest.org/en/latest/warnings.html
================== 25 passed, 1 warnings in 7.34 seconds ===================
_________________________________ summary __________________________________
flake8: commands succeeded
py3: commands succeeded
congratulations :)
Beware that some swh packages require a postgresql server properly configured
to execute the tests. In this case, you will want to use pifpaf_, which will
spawn a temporary instance of postgresql, to encapsulate the call to pytest.
For example, running pytest in the swh-core package::
(swh) ~/swh-environment$ cd swh-core
(swh) ~/swh-environment/swh-core$ pifpaf run postgresql -- pytest
=========================== test session starts ============================
platform linux -- Python 3.5.3, pytest-3.8.2, py-1.6.0, pluggy-0.7.1
hypothesis profile 'default' -> database=DirectoryBasedExampleDatabase('/home/ddouard/src/swh-environment/swh-core/.hypothesis/examples')
rootdir: /home/ddouard/src/swh-environment/swh-core, inifile: pytest.ini
plugins: requests-mock-1.5.2, postgresql-1.3.4, env-0.6.2, django-3.4.7, cov-2.6.0, pylama-7.6.5, hypothesis-3.76.0, celery-4.2.1
collected 79 items
swh/core/tests/test_api.py .. [ 2%]
swh/core/tests/test_config.py .............. [ 20%]
swh/core/tests/test_db.py .... [ 25%]
swh/core/tests/test_logger.py . [ 26%]
swh/core/tests/test_serializers.py ..... [ 32%]
swh/core/tests/test_statsd.py ...................................... [ 81%]
........ [ 91%]
swh/core/tests/test_utils.py ....... [100%]
======================== 79 passed in 6.59 seconds =========================
.. _pytest: https://pytest.org
.. _tox: https://tox.readthedocs.io
.. _pypi: https://pypi.org
.. _swh-loader-git: https://forge.softwareheritage.org/source/swh-loader-git
.. _pifpaf: https://github.com/jd/pifpaf