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60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
import functools
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import sys
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def parameterized(argnames, argvalues):
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"""Method decorator that runs a test once per parameter set using subTest.
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Usage:
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@parameterized("x, y", [(1, 2), (3, 4)])
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def test_add(self, x, y): ...
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@parameterized("car_model, fingerprints", FINGERPRINTS.items())
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def test_fw(self, car_model, fingerprints): ...
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"""
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if isinstance(argnames, str):
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argnames = [a.strip() for a in argnames.split(',')]
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def decorator(func):
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@functools.wraps(func)
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def wrapper(self):
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for values in argvalues:
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if not isinstance(values, (tuple, list)):
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values = (values,)
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kwargs = dict(zip(argnames, values, strict=True))
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with self.subTest(**kwargs):
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func(self, **kwargs)
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return wrapper
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return decorator
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def parameterized_class(attrs, values=None):
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"""Class decorator that generates subclasses with different class attributes.
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Usage:
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@parameterized_class([{"x": 1}, {"x": 2}])
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@parameterized_class('x', [(1,), (2,)])
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"""
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if isinstance(attrs, str):
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attrs = [attrs]
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params = [dict(zip(attrs, v, strict=True)) for v in values]
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else:
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params = attrs
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def decorator(cls):
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module = sys.modules[cls.__module__]
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for param_set in params:
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name = f"{cls.__name__}_{'_'.join(str(v) for v in param_set.values())}"
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new_cls = type(name, (cls,), param_set)
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new_cls.__qualname__ = name
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new_cls.__module__ = cls.__module__
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new_cls.__test__ = True
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setattr(module, name, new_cls)
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cls.__test__ = False
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return cls
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return decorator
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