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48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
import sys
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import pytest
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import inspect
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class parameterized:
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@staticmethod
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def expand(cases):
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cases = list(cases)
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if not cases:
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return lambda func: pytest.mark.skip("no parameterized cases")(func)
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def decorator(func):
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params = [p for p in inspect.signature(func).parameters if p != 'self']
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normalized = [c if isinstance(c, tuple) else (c,) for c in cases]
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# Infer arg count from first case so extra params (e.g. from @given) are left untouched
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expand_params = params[: len(normalized[0])]
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if len(expand_params) == 1:
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return pytest.mark.parametrize(expand_params[0], [c[0] for c in normalized])(func)
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return pytest.mark.parametrize(', '.join(expand_params), normalized)(func)
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return decorator
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def parameterized_class(attrs, input_list=None):
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if isinstance(attrs, list) and (not attrs or isinstance(attrs[0], dict)):
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params_list = attrs
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else:
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assert input_list is not None
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attr_names = (attrs,) if isinstance(attrs, str) else tuple(attrs)
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params_list = [dict(zip(attr_names, v if isinstance(v, (tuple, list)) else (v,), strict=False)) for v in input_list]
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def decorator(cls):
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globs = sys._getframe(1).f_globals
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for i, params in enumerate(params_list):
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name = f"{cls.__name__}_{i}"
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new_cls = type(name, (cls,), dict(params))
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new_cls.__module__ = cls.__module__
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new_cls.__test__ = True # override inherited False so pytest collects this subclass
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globs[name] = new_cls
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# Don't collect the un-parametrised base, but return it so outer decorators
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# (e.g. @pytest.mark.skip) land on it and propagate to subclasses via MRO.
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cls.__test__ = False
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return cls
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return decorator
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