def test_base_field_write_or_read_only_not_both():
assert BaseField("Read only", read_only=True).write_only is False
assert BaseField("Write only", write_only=True).read_only is False
with pytest.raises(ValueError):
BaseField("Both", read_only=True, write_only=True)
def test_base_field_implementation_hooks():
field = BaseField(None)
with pytest.raises(NotImplementedError):
field.to_representation(None)
with pytest.raises(NotImplementedError):
field.from_representation(None)
def test_base_field_validate():
def always_pass_validator(value):
pass
def always_raise_validator(value):
raise ValidationError("Just because!")
# here there is no chance to validate
field_with_picky_validation = BaseField(
"test base field validators",
validators=[always_pass_validator, always_raise_validator]
)
with pytest.raises(ValidationError):
field_with_picky_validation.validate("foo")
# here will validate because of very indulgent validation
field_with_lenient_validation = BaseField(
"test validate",
validators=[always_pass_validator]
)
field_with_lenient_validation.validate("foo")
# here will also validate because there are no vaidators
field_with_lenient_validation = BaseField("test validate")
field_with_lenient_validation.validate("foo")
def test_base_field_implementation_hooks():
field = BaseField(None)
with pytest.raises(NotImplementedError):
field.to_representation(None)
with pytest.raises(NotImplementedError):
field.from_representation(None)
def test_base_field_validate():
def always_pass_validator(value):
pass
def always_raise_validator(value):
raise ValidationError("Just because!")
# here there is no chance to validate
field_with_picky_validation = BaseField(
"test base field validators",
validators=[always_pass_validator, always_raise_validator])
with pytest.raises(ValidationError):
field_with_picky_validation.validate("foo")
# here will validate because of very indulgent validation
field_with_lenient_validation = BaseField(
"test validate", validators=[always_pass_validator])
field_with_lenient_validation.validate("foo")
# here will also validate because there are no vaidators
field_with_lenient_validation = BaseField("test validate")
field_with_lenient_validation.validate("foo")
