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from __future__ import annotations as _annotations
from datetime import date, datetime, time
from typing import Any, Callable
from pydantic_core import (
CoreSchema,
ErrorDetails,
PydanticKnownError,
SchemaError,
SchemaSerializer,
SchemaValidator,
ValidationError,
core_schema,
)
class Foo:
bar: str
def foo(bar: str) -> None: ...
def validator_deprecated(value: Any, info: core_schema.FieldValidationInfo) -> None: ...
def validator(value: Any, info: core_schema.ValidationInfo) -> None: ...
def wrap_validator(value: Any, call_next: Callable[[Any], Any], info: core_schema.ValidationInfo) -> None: ...
def test_schema_typing() -> None:
# this gets run by pyright, but we also check that it executes
schema: CoreSchema = {
'type': 'union',
'choices': [{'type': 'int'}, {'type': 'int', 'ge': 1}, {'type': 'float', 'lt': 1.0}],
}
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'tagged-union',
'discriminator': 'type',
'choices': {
'apple': {
'type': 'typed-dict',
'fields': {'pips': {'type': 'typed-dict-field', 'schema': {'type': 'int'}}},
},
'banana': {
'type': 'typed-dict',
'fields': {'curvature': {'type': 'typed-dict-field', 'schema': {'type': 'float'}}},
},
},
}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'int', 'ge': 1}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'float', 'lt': 1.0}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'str', 'pattern': r'http://.*'}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'bool', 'strict': False}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'literal', 'expected': [1, '1']}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'any'}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'none'}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'bytes'}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'list', 'items_schema': {'type': 'str'}, 'min_length': 3}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'set', 'items_schema': {'type': 'str'}, 'max_length': 3}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'tuple', 'items_schema': [{'type': 'str'}], 'variadic_item_index': 0, 'max_length': 3}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'tuple', 'items_schema': [{'type': 'str'}, {'type': 'int'}]}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'frozenset', 'items_schema': {'type': 'str'}, 'max_length': 3}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'dict', 'keys_schema': {'type': 'str'}, 'values_schema': {'type': 'any'}}
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'typed-dict',
'fields': {'bar': {'type': 'typed-dict-field', 'schema': {'type': 'str'}}},
}
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'model',
'cls': Foo,
'schema': {'type': 'model-fields', 'fields': {'bar': {'type': 'model-field', 'schema': {'type': 'str'}}}},
}
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'typed-dict',
'fields': {
'a': {'type': 'typed-dict-field', 'schema': {'type': 'str'}},
'b': {'type': 'typed-dict-field', 'schema': {'type': 'str'}, 'validation_alias': 'foobar'},
'c': {
'type': 'typed-dict-field',
'schema': {'type': 'str'},
'validation_alias': [['foobar', 0, 'bar'], ['foo']],
},
'd': {
'type': 'typed-dict-field',
'schema': {'type': 'default', 'schema': {'type': 'str'}, 'default': 'spam'},
},
},
}
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'function-wrap',
'function': {'type': 'with-info', 'function': wrap_validator, 'field_name': 'foobar'},
'schema': {'type': 'str'},
}
SchemaValidator(schema)
schema: CoreSchema = core_schema.with_info_plain_validator_function(validator)
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'definitions',
'schema': {'type': 'definition-ref', 'schema_ref': 'Branch'},
'definitions': [
{
'type': 'typed-dict',
'fields': {
'name': {'type': 'typed-dict-field', 'schema': {'type': 'str'}},
'sub_branch': {
'type': 'typed-dict-field',
'schema': {
'type': 'default',
'schema': {
'type': 'nullable',
'schema': {'type': 'definition-ref', 'schema_ref': 'Branch'},
},
'default': None,
},
},
},
'ref': 'Branch',
}
],
}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'date', 'le': date.today()}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'time', 'lt': time(12, 13, 14)}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'datetime', 'ge': datetime.now()}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'is-instance', 'cls': Foo}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'callable'}
SchemaValidator(schema)
schema: CoreSchema = {
'type': 'arguments',
'arguments_schema': [
{'name': 'a', 'mode': 'positional_only', 'schema': {'type': 'int'}},
{'name': 'b', 'schema': {'type': 'str'}},
{'name': 'c', 'mode': 'keyword_only', 'schema': {'type': 'bool'}},
],
}
SchemaValidator(schema)
schema: CoreSchema = {'type': 'call', 'arguments_schema': {'type': 'any'}, 'function': foo}
SchemaValidator(schema)
def test_schema_typing_error() -> None:
_: CoreSchema = {'type': 'wrong'} # type: ignore
def test_schema_validator() -> None:
SchemaValidator({'type': 'int'})
def test_schema_validator_wrong() -> None:
# use this instead of pytest.raises since pyright complains about input when pytest isn't installed
try:
SchemaValidator({'type': 'bad'}) # type: ignore
except SchemaError:
pass
else:
raise AssertionError('SchemaValidator did not raise SchemaError')
def test_correct_function_signature() -> None:
def my_validator(value: Any, info: Any) -> str:
return str(value)
v = SchemaValidator(core_schema.with_info_plain_validator_function(my_validator))
assert v.validate_python(1) == '1'
def test_wrong_function_signature() -> None:
def wrong_validator(value: Any) -> Any:
return value
v = SchemaValidator(core_schema.with_info_plain_validator_function(wrong_validator)) # type: ignore
# use this instead of pytest.raises since pyright complains about input when pytest isn't installed
try:
v.validate_python(1)
except TypeError as exc:
assert 'takes 1 positional argument but 2 were given' in str(exc)
else:
raise AssertionError('v.validate_python(1) did not raise TypeError')
def test_type_error():
try:
PydanticKnownError('foobar') # type: ignore
except KeyError as exc:
assert str(exc) == '"Invalid error type: \'foobar\'"'
else:
raise AssertionError("PydanticKnownError('foobar') did not raise KeyError")
e = PydanticKnownError('recursion_loop')
assert isinstance(e, PydanticKnownError)
def test_ser_function_plain():
def f(input: Any, info: core_schema.SerializationInfo, /) -> str:
return str(info)
s = SchemaSerializer(
core_schema.any_schema(
serialization=core_schema.plain_serializer_function_ser_schema(
f, info_arg=True, return_schema=core_schema.str_schema()
)
)
)
assert s.to_python(123) == (
"SerializationInfo(include=None, exclude=None, context=None, mode='python', by_alias=False, exclude_unset=False, "
'exclude_defaults=False, exclude_none=False, exclude_computed_fields=False, round_trip=False, serialize_as_any=False)'
)
def test_ser_function_wrap():
def f(
input: Any, serialize: core_schema.SerializerFunctionWrapHandler, info: core_schema.SerializationInfo, /
) -> str:
return f'{serialize} {info}'
s = SchemaSerializer(
core_schema.any_schema(
serialization=core_schema.wrap_serializer_function_ser_schema(
f, info_arg=True, schema=core_schema.str_schema(), when_used='json'
)
)
)
# insert_assert(s.to_python(123, mode='json'))
assert s.to_python(123, mode='json') == (
'SerializationCallable(serializer=str) '
"SerializationInfo(include=None, exclude=None, context=None, mode='json', by_alias=False, exclude_unset=False, "
'exclude_defaults=False, exclude_none=False, exclude_computed_fields=False, round_trip=False, serialize_as_any=False)'
)
def test_error_details() -> None:
# Test that the ErrorDetails type is correctly exported.
def act_on_error_details(_: ErrorDetails) -> None:
pass
v = SchemaValidator({'type': 'int'})
try:
v.validate_python('not an int')
except ValidationError as err:
for details in err.errors(include_url=False):
act_on_error_details(details)
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