def __init__(self):
super(BoundedFloatStrategy, self).__init__()
self.inner_strategy = FixedBoundedFloatStrategy(0, 1)
self.parameter = params.CompositeParameter(
left=params.NormalParameter(0, 1),
length=params.ExponentialParameter(1),
spread=self.inner_strategy.parameter,
)
def __init__(self, strategies, average_length=50.0):
SearchStrategy.__init__(self)
self.descriptor = _unique(x.descriptor for x in strategies)
self.element_strategy = one_of_strategies(strategies)
self.parameter = params.CompositeParameter(
average_length=params.ExponentialParameter(1.0 / average_length),
child_parameter=self.element_strategy.parameter,
)
def test_exponential_errors_on_negative_mean():
with pytest.raises(ValueError):
params.ExponentialParameter(-1)