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category. If todo'd tests succeed, Trial L{TestResult}s will report an
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@param reason: A string explaining why the test is marked 'todo'
@param errors: An iterable of exception types that the test is
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the observer object it accepts.
@ivar message: The string which was passed as the message parameter to
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@ivar category: The L{Warning} subclass which was passed as the category
parameter to L{warnings.warn}.
@ivar filename: The name of the file containing the definition of the code
object which was C{stacklevel} frames above the call to
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parameter passed to L{warnings.warn}.
@ivar lineno: The source line associated with the active instruction of the
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@ivar _expected: See C{expected} parameter of C{__init__}
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less the number of times C{_remove} has been called; used to only add
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A unit test. The atom of the unit testing universe.
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integration, monkey-patching support, and more.
To write a unit test, subclass C{SynchronousTestCase} and define a method
(say, 'test_foo') on the subclass. To run the test, instantiate your
subclass with the name of the method, and call L{run} on the instance,
passing a L{TestResult} object.
The C{trial} script will automatically find any C{SynchronousTestCase}
subclasses defined in modules beginning with 'test_' and construct test
cases for all methods beginning with 'test'.
If an error is logged during the test run, the test will fail with an
error. See L{log.err}.
@ivar failureException: An exception class, defaulting to C{FailTest}. If
the test method raises this exception, it will be reported as a failure,
rather than an exception. All of the assertion methods raise this if the
assertion fails.
@ivar skip: L{None} or a string explaining why this test is to be
skipped. If defined, the test will not be run. Instead, it will be
reported to the result object as 'skipped' (if the C{TestResult} supports
skipping).
@ivar todo: L{None}, a string or a tuple of C{(errors, reason)} where
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classes, and C{reason} is a string. See L{Todo} or L{makeTodo} for more
information.
@ivar suppress: L{None} or a list of tuples of C{(args, kwargs)} to be
passed to C{warnings.filterwarnings}. Use these to suppress warnings
raised in a test. Useful for testing deprecated code. See also
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a tuple (L{True}, L{str}).
If the C{skip} attribute does not exist, look for C{__unittest_skip__}
and C{__unittest_skip_why__} attributes which are set by the standard
library L{unittest.skip} function.
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for more details.
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Run the test case, storing the results in C{result}.
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All warnings include a filename and source line number; if these
parts of a warning point to a source line which is part of a
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@type offendingFunctions: L{None} or L{list} of functions or methods.
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parameter to L{warnings.warn}.
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attributes are being deprecated in, using the C{__name__} global can
be helpful
@type name: C{str}
@param name: Attribute name which we expect to be deprecated
@param version: The first L{version<twisted.python.versions.Version>} that
the module attribute was deprecated.
@type message: C{str}
@param message: (optional) The expected deprecation message for the module attribute
@return: The given attribute from the named module
@raise FailTest: if no warnings were emitted on getattr, or if the
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please-use-something-else message that is standard for Twisted
deprecations according to the given version and replacement.
@since: Twisted 21.2.0
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path will not.
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file just create the file (e.g. by opening the path for writing and then
closing it).
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Returns any warning suppressions set for this test. Checks on the
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anything. See L{TestCase} docstring for more details.
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Return the reason to use for skipping a test method.
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Run a single method, either a test method or fixture.
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attribute on this method, test case, or the module it is defined in.
@param method: The method to run.
@param result: The TestResult instance to which to report results.
@return: C{True} if the method fails and no further method/fixture calls
should be made, C{False} otherwise.
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Synchronously run any cleanups which have been added.
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