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subclass, specify in the constructor arguments the name of the test method
that the instance is to execute.
Test authors should subclass TestCase for their own tests. Construction
and deconstruction of the test's environment ('fixture') can be
implemented by overriding the 'setUp' and 'tearDown' methods respectively.
If it is necessary to override the __init__ method, the base class
__init__ method must always be called. It is important that subclasses
should not change the signature of their __init__ method, since instances
of the classes are instantiated automatically by parts of the framework
in order to be run.
When subclassing TestCase, you can set these attributes:
* failureException: determines which exception will be raised when
the instance's assertion methods fail; test methods raising this
exception will be deemed to have 'failed' rather than 'errored'.
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objects used in assert methods) will be printed on failure in *addition*
to any explicit message passed.
* maxDiff: sets the maximum length of a diff in failure messages
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rVt �n | j j r]t �W || _dS W || _dS || _w )aP Return a context manager that will return the enclosed block
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��z TestCase._feedErrorsToResultc C sD z|j }W n ty t�dt� |�| � Y d S w || |� d S )Nz@TestResult has no addExpectedFailure method, reporting as passes)�addExpectedFailurerl r� r� r� r� )r r r$ r� r r r �_addExpectedFailure s
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�z TestCase.runc C sp | j pt� }| jr5| j�� \}}}|�| �� | j|g|�R i |�� W d � n1 s-w Y | js |jS )zNExecute all cleanup functions. Normally called for you after
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unexpected exception.
If called with the callable and arguments omitted, will return a
context object used like this::
with self.assertRaises(SomeException):
do_something()
An optional keyword argument 'msg' can be provided when assertRaises
is used as a context object.
The context manager keeps a reference to the exception as
the 'exception' attribute. This allows you to inspect the
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self.assertEqual(the_exception.error_code, 3)
� assertRaisesN�ro rn )r �expected_exceptionr2 r3 �contextr r r r � s
zTestCase.assertRaisesc O s t || �}|�d||�S )a� Fail unless a warning of class warnClass is triggered
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out, or raised as an exception.
If called with the callable and arguments omitted, will return a
context object used like this::
with self.assertWarns(SomeWarning):
do_something()
An optional keyword argument 'msg' can be provided when assertWarns
is used as a context object.
The context manager keeps a reference to the first matching
warning as the 'warning' attribute; similarly, the 'filename'
and 'lineno' attributes give you information about the line
of Python code from which the warning was triggered.
This allows you to inspect the warning after the assertion::
with self.assertWarns(SomeWarning) as cm:
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the_warning = cm.warning
self.assertEqual(the_warning.some_attribute, 147)
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zTestCase.assertWarnsc C � ddl m} || ||dd�S )a� Fail unless a log message of level *level* or higher is emitted
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a recording object with two attributes: `output` and `records`.
At the end of the context manager, the `output` attribute will
be a list of the matching formatted log messages and the
`records` attribute will be a list of the corresponding LogRecord
objects.
Example::
with self.assertLogs('foo', level='INFO') as cm:
logging.getLogger('foo').info('first message')
logging.getLogger('foo.bar').error('second message')
self.assertEqual(cm.output, ['INFO:foo:first message',
'ERROR:foo.bar:second message'])
r ��_AssertLogsContextF�Zno_logs�Z_logr �r Zlogger�levelr r r r �
assertLogs s zTestCase.assertLogsc C r )z� Fail unless no log messages of level *level* or higher are emitted
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r r Tr r r r r r � assertNoLogs s zTestCase.assertNoLogsc C sF t |�t |�u r | j�t |��}|dur t|t�r t| |�}|S | jS )a Get a detailed comparison function for the types of the two args.
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