def test_validators_error():
def error(value):
raise ValidationError('Uh oh!')
field = Field(validators=[error])
with pytest.raises(ValidationError):
field.run_validation(123)
def test_required():
field = Field(required=True)
assert field.run_validation(123) == 123
with pytest.raises(ValidationError):
field.run_validation(None)
with pytest.raises(ValidationError):
field.run_validation(empty)
def test_default_callable():
def f():
f.counter += 1
return f.counter
f.counter = 0
field = Field(default=f)
assert field.run_validation('bar') == 'bar'
assert field.run_validation(None) == 1
assert field.run_validation(empty) == 2
assert field.run_validation(empty) == 3
def test_validators_skip():
def skip(value):
raise SkipField
field = Field(validators=[lambda x: x + 1, skip])
assert field.run_validation(1) == 2
def test_set_context():
class f():
def __init__(self):
self.parent = None
def __call__(self, value):
return self.parent.foo
def set_context(self, parent):
self.parent = parent
field = Field(validators=[f()])
field.foo = 'bar'
assert field.run_validation(123) == 'bar'
def test_validators():
field = Field(validators=[lambda x: 2 * x, lambda x: x + 1])
assert field.run_validation(2) == 5
def test_optional():
field = Field(required=False)
assert field.run_validation(123) == 123
assert field.run_validation(None) is None
assert field.run_validation(empty) is None
def test_default():
field = Field(default='foo')
assert field.run_validation('bar') == 'bar'
assert field.run_validation(None) == 'foo'
assert field.run_validation(empty) == 'foo'