def test_proportion_normalization():
# extremes should give the whole set, as well
# as if 0 is inserted
eq(_normalize_split(0.), [0.0, 0.0, 1.0])
eq(_normalize_split(1.), [0.0, 1.0, 1.0])
eq(_normalize_split(2.), [0.0, 1.0, 1.0])
# negative values should raise ValueError
assert_raises(ValueError, _normalize_split, -1)
assert_raises(ValueError, _normalize_split, [1., -1])
assert_raises(ValueError, _normalize_split, [1., -1, 0.])
# if everything is zero it will complain
assert_raises(ValueError, _normalize_split, [0.])
assert_raises(ValueError, _normalize_split, [0., 0.])
# one-element array should return the whole interval
eq(_normalize_split([0.5]), [0.0, 1.0])
eq(_normalize_split([1.]), [0.0, 1.0])
eq(_normalize_split([2.]), [0.0, 1.0])
# simple division should give two pieces
for x in [0.3, 0.5, 0.9]:
eq(_normalize_split(x), [0., x, 1.0])
# multiple division should split as the sum of the components
for x, y in [(0.25, 0.5), (0.1, 0.8), (10., 30.)]:
eq(_normalize_split([x, y]), [0., x / (x + y), 1.0])
for x, y, z in [(1., 1., 1.), (0.1, 0.5, 0.7), (10., 30., 40)]:
eq(_normalize_split([x, y, z]),
[0., x / (x + y + z), (x + y) / (x + y + z), 1.0])
def test_proportion_normalization():
# extremes should give the whole set, as well
# as if 0 is inserted
eq(_normalize_split(0.), [0.0, 0.0, 1.0])
eq(_normalize_split(1.), [0.0, 1.0, 1.0])
eq(_normalize_split(2.), [0.0, 1.0, 1.0])
# negative values should raise ValueError
assert_raises(ValueError, _normalize_split, -1)
assert_raises(ValueError, _normalize_split, [1., -1])
assert_raises(ValueError, _normalize_split, [1., -1, 0.])
# if everything is zero it will complain
assert_raises(ValueError, _normalize_split, [0.])
assert_raises(ValueError, _normalize_split, [0., 0.])
# one-element array should return the whole interval
eq(_normalize_split([0.5]), [0.0, 1.0])
eq(_normalize_split([1.]), [0.0, 1.0])
eq(_normalize_split([2.]), [0.0, 1.0])
# simple division should give two pieces
for x in [0.3, 0.5, 0.9]:
eq(_normalize_split(x), [0., x, 1.0])
# multiple division should split as the sum of the components
for x, y in [(0.25, 0.5), (0.1, 0.8), (10., 30.)]:
eq(_normalize_split([x, y]), [0., x / (x + y), 1.0])
for x, y, z in [(1., 1., 1.), (0.1, 0.5, 0.7), (10., 30., 40)]:
eq(_normalize_split(
[x, y, z]), [0., x / (x + y + z), (x + y) / (x + y + z), 1.0])