def test_hash_nun():
x = Nun()
y = Nun()
assert x == y
assert hash(x) == hash(y)
def test_is_nun_with_nun():
x = Nun()
assert x.is_nun()
def test_get_or_insert_with_with_nun():
x = Nun()
assert x.get_or_insert_with(lambda: 5) == 5
assert isinstance(x, Some)
def test_err_with_ok():
x = Ok(2)
assert x.err() == Nun()
def test_is_some_with_nun():
x = Nun()
assert not x.is_some()
def test_unwrap_or_else_with_nun(mocker):
x = Nun()
func = mocker.MagicMock(return_value = 0)
assert x.unwrap_or_else(func) == 0
assert func.call_count == 1
def test_map_or_with_nun():
x = Nun()
assert x.map_or(lambda y: y ** 2, 0) == 0
def test_and_with_nun_nun():
x = Nun()
y = Nun()
assert x.and_(y) == Nun()
def test_and_then_with_nun():
x = Nun()
assert x.and_then(lambda y: y ** 2) == Nun()
def test_and_with_some_nun():
x = Some(2)
y = Nun()
assert x.and_(y) == Nun()
def test_and_with_nun_some():
x = Nun()
y = Some(2)
assert x.and_(y) == Nun()
def test_iter_with_nun():
x = Nun()
assert list(iter(x)) == []
def test_ok_or_else_with_nun():
x = Nun()
assert x.ok_or_else(lambda: Exception('error message')) == Err(Exception('error message'))
def test_ok_or_with_nun():
x = Nun()
assert x.ok_or(Exception('error message')) == Err(Exception('error message'))
def test_unwrap_with_nun():
x = Nun()
with pytest.raises(Panic):
x.unwrap()
def test_or_with_some_nun():
x = Some(2)
y = Nun()
assert x.or_(y) == Some(2)
def test_unwrap_or_with_nun():
x = Nun()
assert x.unwrap_or(0) == 0
def test_or_with_nun_some():
x = Nun()
y = Some(2)
assert x.or_(y) == Some(2)
def test_map_with_nun():
x = Nun()
assert x.map(lambda y: y ** 2) == Nun()
def test_or_with_nun_nun():
x = Nun()
y = Nun()
assert x.or_(y) == Nun()
def test_ok_with_err():
x = Err(Exception("error message"))
assert x.ok() == Nun()
def test_or_else_with_nun():
x = Nun()
assert x.or_else(lambda: 5) == Some(5)
def fm(x):
if x % 2 == 0:
return Some(x**2)
else:
return Nun()
def test_map_or_else_with_nun():
x = Nun()
assert x.map_or_else(lambda y: y ** 2, lambda: 0) == 0