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from marshmallow import Schema, ValidationError, post_load, fields
from marshmallow_polyfield.polyfield import PolyField, PolyFieldBase
import pytest
from tests.shapes import (
Shape,
Rectangle,
Triangle,
shape_schema_serialization_disambiguation,
shape_property_schema_serialization_disambiguation,
shape_schema_deserialization_disambiguation,
shape_property_schema_deserialization_disambiguation,
fuzzy_schema_deserialization_disambiguation,
)
from tests.polyclasses import (
ShapePolyField,
ShapePropertyPolyField,
with_all
)
def _bad_deserializer_disambiguation(self, _):
return 1
class BadClassPolyField(PolyFieldBase):
def serialization_schema_selector(self, value, obj):
return _bad_deserializer_disambiguation(value, obj)
def deserialization_schema_selector(self, value, obj):
return _bad_deserializer_disambiguation(value, obj)
class TestPolyField(object):
class BadContrivedClassSchema(Schema):
main = PolyField(
serialization_schema_selector=_bad_deserializer_disambiguation,
deserialization_schema_selector=_bad_deserializer_disambiguation,
required=True
)
others = PolyField(
serialization_schema_selector=_bad_deserializer_disambiguation,
deserialization_schema_selector=_bad_deserializer_disambiguation,
allow_none=True,
many=True
)
class BadContrivedSubclassSchema(Schema):
main = BadClassPolyField(required=True)
others = BadClassPolyField(allow_none=True, many=True)
class ContrivedShapeClass(object):
def __init__(self, main, others):
self.main = main
self.others = others
def __eq__(self, other):
return self.__dict__ == other.__dict__
class ContrivedShapeClassSchema(Schema):
main = PolyField(
serialization_schema_selector=shape_schema_serialization_disambiguation,
deserialization_schema_selector=shape_schema_deserialization_disambiguation,
required=True
)
others = PolyField(
serialization_schema_selector=shape_schema_serialization_disambiguation,
deserialization_schema_selector=shape_schema_deserialization_disambiguation,
allow_none=True,
many=True
)
@post_load
def make_object(self, data, **_):
return TestPolyField.ContrivedShapeClass(
data.get('main'),
data.get('others')
)
class FuzzySchema(Schema):
data = PolyField(
deserialization_schema_selector=fuzzy_schema_deserialization_disambiguation,
many=True
)
class ContrivedShapeSubclassSchema(Schema):
main = ShapePolyField(required=True)
others = ShapePolyField(allow_none=True, many=True)
@post_load
def make_object(self, data, **_):
return TestPolyField.ContrivedShapeClass(
data.get('main'),
data.get('others')
)
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield(self, schema):
original = self.ContrivedShapeClass(
Rectangle('blue', 1, 100),
[Rectangle('pink', 4, 93), Triangle('red', 8, 45)]
)
data = schema().load(
{'main': {'color': 'blue',
'length': 1,
'width': 100},
'others': [
{'color': 'pink',
'length': 4,
'width': 93},
{'color': 'red',
'base': 8,
'height': 45}]}
)
assert data == original
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield_none(self, schema):
original = self.ContrivedShapeClass(
Rectangle("blue", 1, 100),
None
)
data = schema().load(
{'main': {'color': 'blue',
'length': 1,
'width': 100},
'others': None}
)
assert data == original
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserailize_polyfield_none_required(self, schema):
with pytest.raises(ValidationError):
schema().load(
{'main': None,
'others': None}
)
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield_invalid_type_error(self, schema):
with pytest.raises(ValidationError) as excinfo:
schema().load(
{'main': {'color': 'blue', 'something': 4},
'others': None}
)
assert str(excinfo.value) == str("{'main': ['Could not detect type. "
"Did not have a base or a length. "
"Are you sure this is a shape?']}")
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield_invalid_validation_error(self, schema):
with pytest.raises(ValidationError) as excinfo:
schema().load(
{'main': {'base': -1, 'something': 4},
'others': None}
)
assert str(excinfo.value) == "{'main': ['Base cannot be negative.']}"
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield_invalid_generic_error(self, schema):
err_msg = 'Ensure there is a deserialization_schema_selector'
with pytest.raises(ValidationError, match=err_msg):
schema().load(
{'main': {'width': 100, 'length': -1},
'others': {'width': 100, 'length': 10}}
)
@with_all(
BadContrivedClassSchema,
BadContrivedSubclassSchema,
)
def test_deserialize_polyfield_invalid_schema_returned_is_invalid(self, schema):
with pytest.raises(ValidationError):
schema().load(
{'main': {'color': 'blue', 'something': 4},
'others': None}
)
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield_errors(self, schema):
with pytest.raises(ValidationError):
schema().load(
{'main': {'color': 'blue', 'length': 'four', 'width': 4},
'others': None}
)
def test_fuzzy_schema(self):
color = 'cyan'
email = 'dummy@example.com'
expected_data = {'data': [Shape(color), email]}
data = self.FuzzySchema().load({'data': [{'color': color}, email]})
assert data == expected_data
class TestPolyFieldDisambiguationByProperty(object):
class ContrivedShapeClass(object):
def __init__(self, main, others, type):
self.main = main
self.others = others
self.type = type
def __eq__(self, other):
return self.__dict__ == other.__dict__
class ContrivedShapeClassSchema(Schema):
main = PolyField(
serialization_schema_selector=shape_property_schema_serialization_disambiguation,
deserialization_schema_selector=shape_property_schema_deserialization_disambiguation,
required=True
)
others = PolyField(
serialization_schema_selector=shape_property_schema_serialization_disambiguation,
deserialization_schema_selector=shape_property_schema_deserialization_disambiguation,
allow_none=True,
many=True
)
type = fields.String(required=True)
@post_load
def make_object(self, data, **_):
return TestPolyFieldDisambiguationByProperty.ContrivedShapeClass(
data.get('main'),
data.get('others'),
data.get('type')
)
class ContrivedShapeSubclassSchema(Schema):
main = ShapePropertyPolyField(required=True)
others = ShapePropertyPolyField(allow_none=True, many=True)
type = fields.String(required=True)
@post_load
def make_object(self, data, **_):
return TestPolyFieldDisambiguationByProperty.ContrivedShapeClass(
data.get('main'),
data.get('others'),
data.get('type')
)
@with_all(
ContrivedShapeClassSchema,
ContrivedShapeSubclassSchema,
)
def test_deserialize_polyfield(self, schema):
original = self.ContrivedShapeClass(
Rectangle('blue', 1, 100),
[Rectangle('pink', 4, 93), Rectangle('red', 3, 90)],
'rectangle'
)
data = schema().load(
{'main': {'color': 'blue',
'length': 1,
'width': 100},
'others': [
{'color': 'pink',
'length': 4,
'width': 93},
{'color': 'red',
'length': 3,
'width': 90}],
'type': 'rectangle'}
)
assert data == original
def test_deserialize_polyfield_partial_loading():
class CircleSchema(Schema):
color = fields.Str(required=True)
radius = fields.Int(required=True)
class PartialLoadingShapeSchema(Schema):
shape = PolyField(
deserialization_schema_selector=lambda _, __: CircleSchema,
required=True
)
data = {'shape': {'radius': 1}}
assert PartialLoadingShapeSchema().load(data, partial=True) == data
assert PartialLoadingShapeSchema(partial=True).load(data) == data
assert PartialLoadingShapeSchema().load(data, partial=("shape.color", )) == data
|
