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author | Benjamin Peterson <benjamin@python.org> | 2010-04-11 16:12:57 (GMT) |
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committer | Benjamin Peterson <benjamin@python.org> | 2010-04-11 16:12:57 (GMT) |
commit | 08bf91c0416c7409634164b7d449f2e5a0f3ebde (patch) | |
tree | d12c5c56bb05c33a2e8244a9287099b42a09d9e1 /Doc/library/test.rst | |
parent | 40b0c9ac4db521494eac8874d457556d1dfb81b1 (diff) | |
download | cpython-08bf91c0416c7409634164b7d449f2e5a0f3ebde.zip cpython-08bf91c0416c7409634164b7d449f2e5a0f3ebde.tar.gz cpython-08bf91c0416c7409634164b7d449f2e5a0f3ebde.tar.bz2 |
Merged revisions 79307,79408,79430,79533,79542,79579-79580,79585-79587,79607-79608,79622,79717,79820,79822,79828,79862,79875,79923-79924,79941-79943,79945,79947,79951-79952 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r79307 | florent.xicluna | 2010-03-22 17:45:50 -0500 (Mon, 22 Mar 2010) | 2 lines
#7667: Fix doctest failures with non-ASCII paths.
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r79408 | victor.stinner | 2010-03-24 20:18:38 -0500 (Wed, 24 Mar 2010) | 2 lines
Fix a gcc warning introduced by r79397.
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r79430 | brian.curtin | 2010-03-25 18:48:54 -0500 (Thu, 25 Mar 2010) | 2 lines
Fix #6538. Markup RegexObject and MatchObject as classes. Patch by Ryan Arana.
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r79533 | barry.warsaw | 2010-03-31 16:07:16 -0500 (Wed, 31 Mar 2010) | 6 lines
- Issue #8233: When run as a script, py_compile.py optionally takes a single
argument `-` which tells it to read files to compile from stdin. Each line
is read on demand and the named file is compiled immediately. (Original
patch by Piotr O?\197?\188arowski).
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r79542 | r.david.murray | 2010-03-31 20:28:39 -0500 (Wed, 31 Mar 2010) | 3 lines
A couple small grammar fixes in test.rst, and rewrite the
check_warnings docs to be clearer.
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r79579 | georg.brandl | 2010-04-02 03:34:41 -0500 (Fri, 02 Apr 2010) | 1 line
Add 2.6.5.
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r79580 | georg.brandl | 2010-04-02 03:39:09 -0500 (Fri, 02 Apr 2010) | 1 line
#2768: add a note on how to get a file descriptor.
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r79585 | georg.brandl | 2010-04-02 04:03:18 -0500 (Fri, 02 Apr 2010) | 1 line
Remove col-spanning cells in logging docs.
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r79586 | georg.brandl | 2010-04-02 04:07:42 -0500 (Fri, 02 Apr 2010) | 1 line
Document PyImport_ExecCodeModuleEx().
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r79587 | georg.brandl | 2010-04-02 04:11:49 -0500 (Fri, 02 Apr 2010) | 1 line
#8012: clarification in generator glossary entry.
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r79607 | andrew.kuchling | 2010-04-02 12:48:23 -0500 (Fri, 02 Apr 2010) | 1 line
#6647: document that catch_warnings is not thread-safe
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r79608 | andrew.kuchling | 2010-04-02 12:54:26 -0500 (Fri, 02 Apr 2010) | 1 line
#6647: add note to two examples
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r79622 | tarek.ziade | 2010-04-02 16:34:19 -0500 (Fri, 02 Apr 2010) | 1 line
removed documentation on code that was reverted and pushed into distutils2
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r79717 | antoine.pitrou | 2010-04-03 16:22:38 -0500 (Sat, 03 Apr 2010) | 4 lines
Fix wording / typography, and a slightly misleading statement
(memoryviews don't support complex structures right now)
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r79820 | benjamin.peterson | 2010-04-05 22:34:09 -0500 (Mon, 05 Apr 2010) | 1 line
ready _sre types
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r79822 | georg.brandl | 2010-04-06 03:18:15 -0500 (Tue, 06 Apr 2010) | 1 line
#8320: document return value of recv_into().
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r79828 | georg.brandl | 2010-04-06 09:33:44 -0500 (Tue, 06 Apr 2010) | 1 line
Add JP.
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r79862 | georg.brandl | 2010-04-06 15:27:59 -0500 (Tue, 06 Apr 2010) | 1 line
Fix syntax.
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r79875 | mark.dickinson | 2010-04-06 17:18:23 -0500 (Tue, 06 Apr 2010) | 1 line
More NaN consistency doc fixes.
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r79923 | georg.brandl | 2010-04-10 06:15:24 -0500 (Sat, 10 Apr 2010) | 1 line
#8360: skipTest was added in 2.7.
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r79924 | georg.brandl | 2010-04-10 06:16:59 -0500 (Sat, 10 Apr 2010) | 1 line
#8346: update version.
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r79941 | andrew.kuchling | 2010-04-10 20:39:36 -0500 (Sat, 10 Apr 2010) | 1 line
Two grammar fixes
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r79942 | andrew.kuchling | 2010-04-10 20:40:06 -0500 (Sat, 10 Apr 2010) | 1 line
Punctuation fix
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r79943 | andrew.kuchling | 2010-04-10 20:40:30 -0500 (Sat, 10 Apr 2010) | 1 line
Add various items
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r79945 | andrew.kuchling | 2010-04-10 20:40:49 -0500 (Sat, 10 Apr 2010) | 1 line
name correct
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r79947 | andrew.kuchling | 2010-04-10 20:44:13 -0500 (Sat, 10 Apr 2010) | 1 line
Remove distutils section
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r79951 | andrew.kuchling | 2010-04-11 07:48:08 -0500 (Sun, 11 Apr 2010) | 1 line
Two typo fixes
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r79952 | andrew.kuchling | 2010-04-11 07:49:37 -0500 (Sun, 11 Apr 2010) | 1 line
Add two items
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Diffstat (limited to 'Doc/library/test.rst')
-rw-r--r-- | Doc/library/test.rst | 72 |
1 files changed, 41 insertions, 31 deletions
diff --git a/Doc/library/test.rst b/Doc/library/test.rst index 9f013f8..cfd5b10 100644 --- a/Doc/library/test.rst +++ b/Doc/library/test.rst @@ -221,15 +221,15 @@ The :mod:`test.support` module defines the following constants: .. data:: TESTFN - Set to the name that a temporary file could use. Any temporary file that is - created should be closed and unlinked (removed). + Set to a name that is safe to use as the name of a temporary file. Any + temporary file that is created should be closed and unlinked (removed). The :mod:`test.support` module defines the following functions: .. function:: forget(module_name) - Remove the module named *module_name* from ``sys.modules`` and deletes any + Remove the module named *module_name* from ``sys.modules`` and delete any byte-compiled files of the module. @@ -272,49 +272,55 @@ The :mod:`test.support` module defines the following functions: This will run all tests defined in the named module. -.. function:: check_warnings(*filters, quiet=None) +.. function:: check_warnings(*filters, quiet=True) - A convenience wrapper for ``warnings.catch_warnings()`` that makes - it easier to test that a warning was correctly raised with a single - assertion. It is approximately equivalent to calling - ``warnings.catch_warnings(record=True)``. + A convenience wrapper for :func:`warnings.catch_warnings()` that makes it + easier to test that a warning was correctly raised. It is approximately + equivalent to calling ``warnings.catch_warnings(record=True)`` with + :meth:`warnings.simplefilter` set to ``always`` and with the option to + automatically validate the results that are recorded. - It accepts 2-tuples ``("message regexp", WarningCategory)`` as positional - arguments. If there's some ``*filters`` defined, or if the optional keyword - argument ``quiet`` is :const:`False`, it checks if the warnings are - effective. If some filter did not catch any warning, the test fails. If some - warnings are not caught, the test fails, too. To disable these checks, set - argument ``quiet`` to :const:`True`. + ``check_warnings`` accepts 2-tuples of the form ``("message regexp", + WarningCategory)`` as positional arguments. If one or more *filters* are + provided, or if the optional keyword argument *quiet* is :const:`False`, + it checks to make sure the warnings are as expected: each specified filter + must match at least one of the warnings raised by the enclosed code or the + test fails, and if any warnings are raised that do not match any of the + specified filters the test fails. To disable the first of these checks, + set *quiet* to :const:`True`. - Without argument, it defaults to:: + If no arguments are specified, it defaults to:: check_warnings(("", Warning), quiet=True) - Additionally, on entry to the context manager, a :class:`WarningRecorder` - instance is returned. The underlying warnings list is available via the - recorder object's :attr:`warnings` attribute, while the attributes of the - last raised warning are also accessible directly on the object. If no - warning has been raised, then the latter attributes will all be - :const:`None`. + In this case all warnings are caught and no errors are raised. - A :meth:`reset` method is also provided on the recorder object. This - method simply clears the warnings list. + On entry to the context manager, a :class:`WarningRecorder` instance is + returned. The underlying warnings list from + :func:`~warnings.catch_warnings` is available via the recorder object's + :attr:`warnings` attribute. As a convenience, the attributes of the object + representing the most recent warning can also be accessed directly through + the recorder object (see example below). If no warning has been raised, + then any of the attributes that would otherwise be expected on an object + representing a warning will return :const:`None`. - The context manager may be used like this:: + The recorder object also has a :meth:`reset` method, which clears the + warnings list. - import warnings - - with check_warnings(quiet=False): - exec('assert(False, "Hey!")') - warnings.warn(UserWarning("Hide me!")) + The context manager is designed to be used like this:: with check_warnings(("assertion is always true", SyntaxWarning), ("", UserWarning)): exec('assert(False, "Hey!")') warnings.warn(UserWarning("Hide me!")) + In this case if either warning was not raised, or some other warning was + raised, :func:`check_warnings` would raise an error. + + When a test needs to look more deeply into the warnings, rather than + just checking whether or not they occurred, code like this can be used:: + with check_warnings(quiet=True) as w: - warnings.simplefilter("always") warnings.warn("foo") assert str(w.args[0]) == "foo" warnings.warn("bar") @@ -324,8 +330,12 @@ The :mod:`test.support` module defines the following functions: w.reset() assert len(w.warnings) == 0 + + Here all warnings will be caught, and the test code tests the captured + warnings directly. + .. versionchanged:: 3.2 - New optional attributes ``*filters`` and ``quiet``. + New optional arguments *filters* and *quiet*. .. function:: captured_stdout() |