def test_open_erange_cardinality_over_one_order_of_magnitude(series_key, low):
high = low * 10.0
assume(not math.isinf(high))
values = list(open_erange(series_key, low, high))
cardinality = series_key
assert len(values) == cardinality
def test_open_erange_start_stop_in_wrong_order_raises_value_error():
with raises(ValueError):
open_erange(E12, 10, 8)
def test_open_erange_stop_infinite_raises_value_error():
with raises(ValueError):
open_erange(E12, 10, float("inf"))
def test_open_erange_stop_too_small_raises_value_error():
with raises(ValueError):
open_erange(E12, 10, 0)
def test_open_erange_start_infinite_raises_value_error():
with raises(ValueError):
inf = float("inf")
open_erange(E12, inf, 10)
