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select tests by call-id, add and refine documentation around it

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--HG--
branch : trunk
This commit is contained in:
holger krekel
2010-10-13 12:26:14 +02:00
parent 3a5d28f3fe
commit 17719b99a1
12 changed files with 101 additions and 124 deletions
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35
doc/funcargs.txt
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@@ -74,7 +74,6 @@ to see available function arguments (which you can also
think of as "resources").
.. _`contact possibilities`: ../contact.html
.. _`parametrizing tests, generalized`: http://tetamap.wordpress.com/2009/05/13/parametrizing-python-tests-generalized/
.. _`blog post about the monkeypatch funcarg`: http://tetamap.wordpress.com/2009/03/03/monkeypatching-in-unit-tests-done-right/
@@ -157,15 +156,37 @@ Running this::
E assert 9 < 9
test_example.py:7: AssertionError
==================== 1 failed, 9 passed in 0.04 seconds ====================
==================== 1 failed, 9 passed in 0.03 seconds ====================
Here is what happens in detail:
Note that the ``pytest_generate_tests(metafunc)`` hook is called during
the test collection phase. You can have a look at it with this::
1. ``pytest_generate_tests(metafunc)`` hook is called once for each test
function. It adds ten new function calls with explicit function arguments.
$ py.test --collectonly test_example.py
<Directory 'doc-exec-341'>
<Module 'test_example.py'>
<Function 'test_func[0]'>
<Function 'test_func[1]'>
<Function 'test_func[2]'>
<Function 'test_func[3]'>
<Function 'test_func[4]'>
<Function 'test_func[5]'>
<Function 'test_func[6]'>
<Function 'test_func[7]'>
<Function 'test_func[8]'>
<Function 'test_func[9]'>
If you want to select only the run with the value ``7`` you could do::
$ py.test -v -k 7 test_example.py # or -k test_func[7]
=========================== test session starts ============================
platform linux2 -- Python 2.6.5 -- pytest-2.0.0dev0 -- /home/hpk/venv/0/bin/python
test path 1: test_example.py
test_example.py:6: test_func[7] PASSED
======================== 9 tests deselected by '7' =========================
================== 1 passed, 9 deselected in 0.01 seconds ==================
2. **execute tests**: ``test_func(numiter)`` is called ten times with
ten different arguments.
.. _`metafunc object`: