// Derived from Node.js v24.16.0 (MIT; Copyright Node.js contributors, and Joyent, Inc. and
// other Node contributors). See LICENSE-node.
// Node's ERR_TEST_FAILURE (lib/internal/errors.js): message is `error.message ?? error`
// (inspected when not already a string), `.cause` keeps the original thrown value and
// `.failureType` tags why (kTestCodeFailure, kHookFailure, kTestTimeoutFailure, ...).
import { inspect } from "../inspect";

export interface TestFailureError extends Error {
  code: "ERR_TEST_FAILURE";
  failureType: string;
  cause: unknown;
}

export function testFailure(error: unknown, failureType: string): TestFailureError {
  const raw = (error as { message?: unknown } | null)?.message ?? error;
  const msg = typeof raw === "string" ? raw : inspect(raw);
  const e = new Error(msg) as TestFailureError;
  e.code = "ERR_TEST_FAILURE";
  e.failureType = failureType;
  e.cause = error;
  return e;
}