def test_hash_err_same_type_different_message():
x = Err(Exception('foo'))
y = Err(Exception('bar'))
assert x != y
assert hash(x) != hash(y)
def test_hash_err():
x = Err(Exception('error message'))
y = Err(Exception('error message'))
assert x == y
assert hash(x) == hash(y)
def test_hash_err_different_type_same_message():
x = Err(IOError('error message'))
y = Err(TypeError('error message'))
assert x != y
assert hash(x) != hash(y)
def test_and_with_ok_err():
x = Ok(2)
y = Err(Exception('late'))
assert x.and_(y) == Err(Exception('late'))
def test_ok_or_else_with_nun():
x = Nun()
assert x.ok_or_else(lambda: Exception('error message')) == Err(Exception('error message'))
def test_err_val_must_be_exception():
with pytest.raises(Panic):
Err(0)
def test_map_with_err():
x = Err(Exception('error message'))
assert x.map(lambda x: x**2) == x
def test_or_else_with_err():
x = Err(Exception('error message'))
assert x.or_else(lambda x: Ok(True)) == Ok(True)
def test_unwrap_with_err():
x = Err(Exception('error message'))
with pytest.raises(Panic):
x.unwrap()
def test_or_with_ok():
x = Ok(2)
assert x.or_(Err(Exception('error message'))) == x
def test_or_with_err():
x = Err(Exception('error message'))
assert x.or_(Ok(5)) == Ok(5)
def test_and_then_with_err():
x = Err(Exception('error message'))
assert x.and_then(lambda x: x + 1) == x
def test_and_then_with_ok_and_then_err():
x = Ok(2)
assert x.and_then(lambda x: Err(Exception(x + 1))) == Err(Exception(3))
def test_and_with_err_err():
x = Err(Exception('early'))
y = Err(Exception('late'))
assert x.and_(y) == Err(Exception('early'))
def test_is_err_with_err():
x = Err(Exception("error message"))
assert x.is_err()
def test_unwrap_or_with_err():
x = Err(Exception('error message'))
assert x.unwrap_or(0) == 0
def test_ok_with_err():
x = Err(Exception("error message"))
assert x.ok() == Nun()
def test_unwrap_or_else_with_err():
x = Err(Exception('error message'))
assert x.unwrap_or_else(lambda x: x.args[0].upper()) == 'ERROR MESSAGE'
def test_err_with_err():
x = Err(Exception("error message"))
assert x.err() == Some("error message")
def test_unwrap_err_with_err():
x = Err(Exception('error message'))
assert x.unwrap_err().args == Exception('error message').args
def test_map_err_with_err():
x = Err(Exception('error message'))
assert x.map_err(lambda x: Err(type(x)(x.args[0].upper()))) == Err(
Exception('ERROR MESSAGE'))
def test_iter_with_err():
x = Err(Exception('error message'))
assert list(iter(x)) == []
def test_and_with_err_ok():
x = Err(Exception('early'))
y = Ok(2)
assert x.and_(y) == Err(Exception('early'))
def test_ok_or_with_nun():
x = Nun()
assert x.ok_or(Exception('error message')) == Err(Exception('error message'))