98 lines
2.0 KiB
Python
98 lines
2.0 KiB
Python
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"""
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Checks that only valid values are used in a mapping context.
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"""
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# pylint: disable=missing-docstring,invalid-name,too-few-public-methods,no-self-use,import-error,wrong-import-position
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from __future__ import print_function
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def test(**kwargs):
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print(kwargs)
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# dictionary value/comprehension
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dict_value = dict(a=1, b=2, c=3)
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dict_comp = {chr(x): x for x in range(256)}
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test(**dict_value)
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test(**dict_comp)
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# in order to be used in kwargs custom mapping class should define
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# __iter__(), __getitem__(key) and keys().
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class CustomMapping(object):
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def __init__(self):
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self.data = dict(a=1, b=2, c=3, d=4, e=5)
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def __getitem__(self, key):
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return self.data[key]
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def keys(self):
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return self.data.keys()
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test(**CustomMapping())
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test(**CustomMapping) # [not-a-mapping]
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class NotMapping(object):
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pass
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test(**NotMapping()) # [not-a-mapping]
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# skip checks if statement is inside mixin/base/abstract class
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class SomeMixin(object):
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kwargs = None
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def get_kwargs(self):
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return self.kwargs
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def run(self, **kwargs):
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print(kwargs)
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def dispatch(self):
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kws = self.get_kwargs()
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self.run(**kws)
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class AbstractThing(object):
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kwargs = None
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def get_kwargs(self):
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return self.kwargs
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def run(self, **kwargs):
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print(kwargs)
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def dispatch(self):
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kws = self.get_kwargs()
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self.run(**kws)
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class BaseThing(object):
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kwargs = None
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def get_kwargs(self):
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return self.kwargs
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def run(self, **kwargs):
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print(kwargs)
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def dispatch(self):
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kws = self.get_kwargs()
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self.run(**kws)
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# abstract class
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class Thing(object):
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def get_kwargs(self):
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raise NotImplementedError
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def run(self, **kwargs):
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print(kwargs)
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def dispatch(self):
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kwargs = self.get_kwargs()
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self.run(**kwargs)
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# skip uninferable instances
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from some_missing_module import Mapping
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class MyClass(Mapping):
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pass
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test(**MyClass())
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