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from dataclasses import dataclass, field
from typing import NewType, Optional
from apischema import deserializer, schema, type_name
from apischema.json_schema import deserialization_schema
class Foo:
pass
@dataclass
class Bar:
foo: Optional[Foo]
@deserializer
def foo(bar: Bar) -> Foo:
return bar.foo or Foo()
def test_recursive_by_conversion_schema():
assert deserialization_schema(Foo) == {
"$ref": "#/$defs/Foo",
"$defs": {
"Foo": {
"type": "object",
"properties": {
"foo": {"anyOf": [{"$ref": "#/$defs/Foo"}, {"type": "null"}]}
},
"required": ["foo"],
"additionalProperties": False,
}
},
"$schema": "http://json-schema.org/draft/2020-12/schema#",
}
MoreThanTwo = NewType("MoreThanTwo", int)
schema(min=0, extra=lambda s: s.update({"minimum": 2}))(type_name(None)(MoreThanTwo))
@dataclass
class WithSchema:
attr1: MoreThanTwo = field(metadata=schema(min=3))
attr2: MoreThanTwo = field(metadata=schema(min=1))
def test_flattened_schema():
assert deserialization_schema(WithSchema) == {
"$schema": "http://json-schema.org/draft/2020-12/schema#",
"type": "object",
"properties": {
"attr1": {"type": "integer", "minimum": 3},
"attr2": {"type": "integer", "minimum": 2},
},
"required": ["attr1", "attr2"],
"additionalProperties": False,
}
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