def test_optional_with_value(x):
"""
When optional() is called, it returns a function that does not raise for
none-None values, and returns the value it was passed..
"""
fn = mod.optional()
assert fn(x) == x
def test_optional_with_value(x):
"""
When optional() is called, it returns a function that does not raise for
none-None values, and returns the value it was passed..
"""
fn = mod.optional()
assert fn(x) == x
def test_optional():
"""
When optional() is called, it returns a validator that raises ReturnEarly
if called with None, but not with other values.
"""
fn = mod.optional()
with pytest.raises(mod.ReturnEarly):
fn(None)
def test_optional():
"""
When optional() is called, it returns a validator that raises ReturnEarly
if called with None, but not with other values.
"""
fn = mod.optional()
with pytest.raises(mod.ReturnEarly):
fn(None)
def test_optional_with_default_value():
"""
When optional() is called with some value value, then it returns a function
that raises when it is called with either None or the value passed to
optional().
"""
fn = mod.optional('foo')
with pytest.raises(mod.ReturnEarly):
fn(None)
with pytest.raises(mod.ReturnEarly):
fn('foo')
def test_optional_with_default_value():
"""
When optional() is called with some value value, then it returns a function
that raises when it is called with either None or the value passed to
optional().
"""
fn = mod.optional("foo")
with pytest.raises(mod.ReturnEarly):
fn(None)
with pytest.raises(mod.ReturnEarly):
fn("foo")
