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import pytest
from pydantic_core import SchemaSerializer, core_schema
def test_branch_nullable():
s = SchemaSerializer(
core_schema.definitions_schema(
core_schema.definition_reference_schema('Branch'),
[
core_schema.typed_dict_schema(
{
'name': core_schema.typed_dict_field(core_schema.str_schema()),
'sub_branch': core_schema.typed_dict_field(
core_schema.nullable_schema(core_schema.definition_reference_schema('Branch'))
),
},
ref='Branch',
)
],
)
)
assert s.to_python({'name': 'root', 'sub_branch': {'name': 'branch', 'sub_branch': None}}) == {
'name': 'root',
'sub_branch': {'name': 'branch', 'sub_branch': None},
}
assert s.to_python({'name': 'root', 'sub_branch': {'name': 'branch', 'sub_branch': None}}, exclude_none=True) == {
'name': 'root',
'sub_branch': {'name': 'branch'},
}
def test_cyclic_recursion():
s = SchemaSerializer(
core_schema.definitions_schema(
core_schema.definition_reference_schema('Branch'),
[
core_schema.typed_dict_schema(
{
'name': core_schema.typed_dict_field(core_schema.str_schema()),
'sub_branch': core_schema.typed_dict_field(
core_schema.nullable_schema(core_schema.definition_reference_schema('Branch'))
),
},
ref='Branch',
)
],
)
)
v = {'name': 'root'}
v['sub_branch'] = v
with pytest.raises(ValueError, match=r'Circular reference detected \(id repeated\)'):
s.to_python(v)
with pytest.raises(ValueError, match=r'Circular reference detected \(id repeated\)'):
s.to_python(v, mode='json')
with pytest.raises(ValueError, match=r'Circular reference detected \(id repeated\)'):
s.to_json(v)
def test_custom_ser():
s = SchemaSerializer(
core_schema.definitions_schema(
core_schema.definition_reference_schema('Branch'),
[
core_schema.typed_dict_schema(
{
'name': core_schema.typed_dict_field(core_schema.str_schema()),
'sub_branch': core_schema.typed_dict_field(
core_schema.nullable_schema(
core_schema.definition_reference_schema(
'Branch', serialization=core_schema.to_string_ser_schema(when_used='always')
)
)
),
},
ref='Branch',
)
],
)
)
assert s.to_python({'name': 'root', 'sub_branch': {'name': 'branch', 'sub_branch': None}}) == {
'name': 'root',
'sub_branch': "{'name': 'branch', 'sub_branch': None}",
}
def test_recursive_function():
s = SchemaSerializer(
core_schema.definitions_schema(
core_schema.definition_reference_schema('my_ref'),
[
core_schema.typed_dict_schema(
{'root': core_schema.typed_dict_field(core_schema.definition_reference_schema('my_ref'))},
ref='my_ref',
serialization=core_schema.wrap_serializer_function_ser_schema(function=lambda x, _handler: x),
)
],
)
)
assert s.to_python({'root': {'root': {}}}) == {'root': {'root': {}}}
def test_recursive_function_deeper_ref():
s = SchemaSerializer(
core_schema.typed_dict_schema(
{
'a': core_schema.typed_dict_field(
core_schema.definitions_schema(
core_schema.definition_reference_schema('my_ref'),
[
core_schema.typed_dict_schema(
{'b': core_schema.typed_dict_field(core_schema.definition_reference_schema('my_ref'))},
ref='my_ref',
)
],
)
)
},
serialization=core_schema.wrap_serializer_function_ser_schema(
function=lambda x, _handler: x, is_field_serializer=False
),
)
)
assert s.to_python({'a': {'b': {'b': {}}}}) == {'a': {'b': {'b': {}}}}
|
