numpy.testing.assert_warns()
numpy.testing.assert_warns
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numpy.testing.assert_warns(warning_class, *args, **kwargs)
[source] -
Fail unless the given callable throws the specified warning.
A warning of class warning_class should be thrown by the callable when invoked with arguments args and keyword arguments kwargs. If a different type of warning is thrown, it will not be caught.
If called with all arguments other than the warning class omitted, may be used as a context manager:
- with assert_warns(SomeWarning):
- do_something()
The ability to be used as a context manager is new in NumPy v1.11.0.