# imports
from typing import Any, cast
from unittest.mock import patch

import pytest  # used for our unit tests
from pydantic._internal._config import ConfigWrapper
from pydantic.config import ConfigDict
from pydantic_core import core_schema


# Mock the prepare_config function for testing purposes
def prepare_config(config):
    if isinstance(config, dict):
        return config
    return {}

# unit tests

# Basic Functionality
def test_standard_config():
    config = {'title': 'TestConfig', 'extra': 'allow', 'allow_inf_nan': True}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title == 'TestConfig'
    assert core_config.extra_fields_behavior == 'allow'
    assert core_config.allow_inf_nan is True

def test_minimal_config():
    config = {}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title is None

def test_none_config():
    wrapper = ConfigWrapper(None)
    core_config = wrapper.core_config(None)
    assert core_config.title is None

# Title Population
class DummyObject:
    __name__ = 'Dummy'

def test_title_from_config():
    config = {'title': 'ExplicitTitle'}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title == 'ExplicitTitle'

def test_title_from_object():
    config = {}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(DummyObject)
    assert core_config.title == 'Dummy'

def test_title_none_object():
    config = {}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title is None

# Edge Cases
def test_invalid_config_type():
    with pytest.raises(TypeError):
        ConfigWrapper(123)

def test_partial_config():
    config = {'title': 'Partial', 'extra': None}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title == 'Partial'
    assert core_config.extra_fields_behavior is None

def test_special_characters_title():
    config = {'title': 'Spécial_Тест'}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title == 'Spécial_Тест'

# Boolean Flags
def test_all_flags_true():
    config = {
        'allow_inf_nan': True,
        'populate_by_name': True,
        'strict': True
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.allow_inf_nan is True
    assert core_config.populate_by_name is True
    assert core_config.strict is True

def test_all_flags_false():
    config = {
        'allow_inf_nan': False,
        'populate_by_name': False,
        'strict': False
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.allow_inf_nan is False
    assert core_config.populate_by_name is False
    assert core_config.strict is False

def test_mixed_flags():
    config = {
        'allow_inf_nan': True,
        'populate_by_name': False,
        'strict': True
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.allow_inf_nan is True
    assert core_config.populate_by_name is False
    assert core_config.strict is True

# String Manipulation
def test_string_manipulation_flags():
    config = {
        'str_strip_whitespace': True,
        'str_to_lower': True,
        'str_to_upper': False
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.str_strip_whitespace is True
    assert core_config.str_to_lower is True
    assert core_config.str_to_upper is False

def test_string_length_constraints():
    config = {
        'str_max_length': 100,
        'str_min_length': 10
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.str_max_length == 100
    assert core_config.str_min_length == 10

# Serialization Options
def test_serialization_flags():
    config = {
        'ser_json_timedelta': True,
        'ser_json_bytes': True,
        'ser_json_inf_nan': False
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.ser_json_timedelta is True
    assert core_config.ser_json_bytes is True
    assert core_config.ser_json_inf_nan is False

def test_serialization_with_none():
    config = {
        'ser_json_timedelta': None,
        'ser_json_bytes': None,
        'ser_json_inf_nan': None
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.ser_json_timedelta is None
    assert core_config.ser_json_bytes is None
    assert core_config.ser_json_inf_nan is None

# Validation Options
def test_validation_flags():
    config = {
        'validate_default': True,
        'revalidate_instances': True
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.validate_default is True
    assert core_config.revalidate_instances is True

def test_validation_with_none():
    config = {
        'validate_default': None,
        'revalidate_instances': None
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.validate_default is None
    assert core_config.revalidate_instances is None

# Performance and Scalability
def test_large_config():
    config = {f'key{i}': i for i in range(1000)}
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert len(core_config.__dict__) == 1000

def test_complex_nested_config():
    config = {
        'nested': {'key1': 'value1', 'key2': 'value2'},
        'title': 'NestedConfig'
    }
    wrapper = ConfigWrapper(config)
    core_config = wrapper.core_config(None)
    assert core_config.title == 'NestedConfig'
    assert core_config.nested == {'key1': 'value1', 'key2': 'value2'}

# Error Handling
def test_invalid_field_names():
    config = {'invalid_field': 'value'}
    wrapper = ConfigWrapper(config)
    with pytest.raises(AttributeError):
        wrapper.core_config(None)

def test_invalid_field_types():
    config = {'title': 12345}
    wrapper = ConfigWrapper(config)
    with pytest.raises(TypeError):
        wrapper.core_config(None)

# Mocking Side Effects
def test_prepare_config_mock():
    with patch('module_name.prepare_config') as mock_prepare:
        mock_prepare.return_value = {'title': 'MockedTitle'}
        wrapper = ConfigWrapper({}, check=True)
        core_config = wrapper.core_config(None)
        assert core_config.title == 'MockedTitle'
        mock_prepare.assert_called_once()

def test_core_schema_coreconfig_mock():
    with patch('pydantic_core.core_schema.CoreConfig') as mock_core_config:
        mock_core_config.return_value = 'MockedCoreConfig'
        wrapper = ConfigWrapper({})
        core_config = wrapper.core_config(None)
        assert core_config == 'MockedCoreConfig'
        mock_core_config.assert_called_once()