Test that a warning is triggered when *callable* is called with any

positional or keyword arguments that are also passed to

:meth:`assertWarns`. The test passes if *warning* is triggered and

To catch any of a group of warnings, a tuple containing the warning

classes may be passed as *warnings*.

If only the *warning* and possibly the *msg* arguments are given,

inline rather than as a function::

:attr:`warning` attribute, and the source line which triggered the

warnings in the :attr:`filename` and :attr:`lineno` attributes.

This can be useful if the intention is to perform additional checks