def test_mul_nimbers():
"""
Test that Nimbers multiply correctly.
"""
a = Nimber(2)
b = Nimber(6)
c = Nimber(11)
assert a * b == c
def test_mul_nimber_game():
"""
Test that Nimbers multiply with Games correctly.
"""
a = Nimber(2)
b = Game(Nimber(2))
c = Game(Nimber(3))
assert a * b == c
def test_add_nimbers():
"""
Test that Nimbers add correctly.
"""
a = Nimber(5)
b = Nimber(6)
c = Nimber(3)
assert a + b == c
def test_add_nimber_game():
"""
Test that Nimbers add with Games correctly.
"""
a = Nimber(3)
b = Game(Nimber(2))
c = Game(Nimber(1))
assert a + b == c
def test_eq_nimber_game():
"""
Test that Nimbers and Games equate properly.
"""
a = Nimber(3)
b = 3 * one
assert not a == b
def test_remoteness(G, H):
"""
Tests for remoteness.
"""
G_plus_H = conjunctive(G, H)
G_plus_H = Nimber(left=G_plus_H.left, right=G_plus_H.right)
assert remoteness(G_plus_H) == min([remoteness(G), remoteness(H)])
def test_nimber_is_number_2():
"""
Test that the Nimber 0 is a number.
"""
assert Nimber(0).is_number
def test_nimber_value(n, v):
"""
Test that the value of a Nimber is represented correctly.
"""
assert Nimber(n).value == v
def test_fail():
"""
Test that Nimbers must have integral values.
"""
with pytest.raises(ValueError):
Nimber(0.5)
def test_neg_nimbers():
"""
Test that a Nimber is its own negative.
"""
a = Nimber(5)
assert a == -a
def test_nimber_birthday(n):
"""
Test that Nimbers have the right birthdays.
"""
assert Nimber(n).birthday == n
def test_nimber_is_infinitesimal_2():
"""
Test that the Nimber 0 is not infinitesimal.
"""
assert not Nimber(0).is_infinitesimal
@pytest.mark.parametrize(['n', 'v'], [
(0, '0'),
(1, '*'),
(6, '*6'),
])
def test_nimber_value(n, v):
"""
Test that the value of a Nimber is represented correctly.
"""
assert Nimber(n).value == v
@pytest.mark.parametrize('n', [
Nimber(3),
Nimber(4),
Nimber(7),
])
def test_nimber_is_number(n):
"""
Test that Nimbers (other than 0) are not numbers.
"""
assert not n.is_number
def test_nimber_is_number_2():
"""
Test that the Nimber 0 is a number.
"""
assert Nimber(0).is_number
@pytest.mark.parametrize(('n', 'v'), [
(0, '0'),
(1, '∗'),
(6, '∗6'),
])
def test_nimber_value(n, v):
"""
Test that the value of a Nimber is represented correctly.
"""
assert Nimber.from_integer(n).value == v
@pytest.mark.parametrize('n', [
Nimber.from_integer(3),
Nimber.from_integer(4),
Nimber.from_integer(7),
])
def test_nimber_is_number(n):
"""
Test that Nimbers (other than 0) are not numbers.
"""
assert not n.is_number
def test_nimber_is_number_2():
"""
Test that the Nimber 0 is a number.
"""
assert Nimber.from_integer(0).is_number