"""Module docstring for testing."""

import os
import os.path
from typing import List, Optional
from collections.abc import Mapping
from . import utils
from ..core import BaseProcessor as BP

MAX_RETRIES = 3
DEFAULT_TIMEOUT = 30.0

def simple_function(x: int, y: int) -> int:
    """Add two numbers."""
    return x + y

async def fetch_data(url: str, timeout: float = 30.0) -> dict:
    """Fetch data from URL."""
    result = await http_client.get(url, timeout=timeout)
    return result.json()

class DataProcessor(BaseProcessor):
    """Processes data records."""

    def __init__(self, config: dict):
        """Initialize processor."""
        self.config = config
        self._cache = {}

    def process(self, data: List[dict]) -> List[dict]:
        """Process a list of records."""
        results = []
        for item in data:
            if self.validate(item):
                transformed = self.transform(item)
                results.append(transformed)
        return results

    @staticmethod
    def validate(item: dict) -> bool:
        """Validate a single item."""
        return 'id' in item and 'name' in item

    @classmethod
    def from_file(cls, path: str) -> 'DataProcessor':
        """Create processor from config file."""
        config = load_config(path)
        return cls(config)

    @property
    def cache_size(self) -> int:
        """Get current cache size."""
        return len(self._cache)

    def _internal_method(self):
        """Private method."""
        pass