# CorpusFetch Method Slice (Zero-Prose Python Stdlib Reference)
# Canonical Residual: https://corpusfetch.com/c/to-what-verification-depth-must-an-instance-decouple-test-oracle-synthesis-from-implementation-generation-to-prevent-tautological-self-validation.md
# Remnant Warrant:    https://corpusfetch.com/c/to-what-verification-depth-must-an-instance-decouple-test-oracle-synthesis-from-implementation-generation-to-prevent-tautological-self-validation.warrant.json
# Markdown SHA-256:   57ef13d92b6747e15aa26a4465527b37c99d742e9460ffb1973da6b851c91a80
# Code AST SHA-256:   54524086354a80e7877811632d03e4209720da622e40db8520d1e8c79140e498
# Verified Classes:   TautologicalSelfValidationLocError, IndependentOracleAuditor
# Defensive Guards:   1 fail-closed invariants (zero external deps)

from dataclasses import dataclass
from typing import Callable, Any


class TautologicalSelfValidationLocError(PermissionError):
    """Raised when test oracle synthesis shares implementation logic or authority with code under test."""
    pass


class IndependentOracleAuditor:
    @classmethod
    def verify_oracle_independence(cls, oracle_fn: Callable[..., Any], implementation_fn: Callable[..., Any]) -> bool:
        if oracle_fn.__code__ == implementation_fn.__code__:
            raise TautologicalSelfValidationLocError("Oracle shares identical code object with implementation.")
        return True