19 lines
511 B
Python
19 lines
511 B
Python
import py
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def deprecated_call(func, *args, **kwargs):
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""" assert that calling func(*args, **kwargs)
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triggers a DeprecationWarning.
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"""
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l = []
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oldwarn = py.std.warnings.warn_explicit
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def warn_explicit(*args, **kwargs):
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l.append(args)
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oldwarn(*args, **kwargs)
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py.magic.patch(py.std.warnings, 'warn_explicit', warn_explicit)
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try:
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_ = func(*args, **kwargs)
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finally:
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py.magic.revert(py.std.warnings, 'warn_explicit')
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assert l
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