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Document integration test case and test environment design

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Update the integration test README to explain the design of the test
case and test environment code. This should help future contributors.

Signed-off-by: Hunor Csomortáni <csomh@redhat.com>
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Hunor Csomortáni
2020-01-30 15:36:05 +01:00
parent 01a04ed793
commit 3ed1180669
1 changed files with 22 additions and 0 deletions
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tests/integration/README.rst
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@@ -40,4 +40,26 @@ have 4 tests running in parallel one could call::
MBS_TEST_WORKERS=4 tox -e integration
Test case and test environment design
=====================================
Currently each test case is implemented in a separate file.
Test cases interact with the test environment, test configuration, and service
under test (SUT) through fixtures. These are defined in `conftest.py`_, and
`pytest takes care`_ to create them.
These fixtures usually instantiate a class from `utils.py`_. These classes are
intended to wrap the services or data the test cases need to interact with.
This wrapping creates a layer of abstraction which makes the test cases more
readable, and should also make updates easier, in case those services or data
change in the future.
Test cases should check for preconditions (if any) in the test data and test
environment. This helps to better understand test failures and debug failing
test cases.
.. _tests/integration/example.test.env.yaml: example.test.env.yaml
.. _conftest.py: conftest.py
.. _pytest takes care: https://docs.pytest.org/en/latest/fixture.html#conftest-py-sharing-fixture-functions
.. _utils.py: utils.py