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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { assert, assertStringIncludes } from "../testing/asserts.ts";
/** Asserts that an error thrown in a callback will not be wrongly caught. */export async function assertCallbackErrorUncaught(  { prelude, invocation, cleanup }: {    /** Any code which needs to run before the actual invocation (notably, any import statements). */    prelude?: string;    /**     * The start of the invocation of the function, e.g. `open("foo.txt", `.     * The callback will be added after it.     */    invocation: string;    /** Called after the subprocess is finished but before running the assertions, e.g. to clean up created files. */    cleanup?: () => Promise<void> | void;  },) {  // Since the error has to be uncaught, and that will kill the Deno process,  // the only way to test this is to spawn a subprocess.  const p = new Deno.Command(Deno.execPath(), {    args: [      "eval",      "--unstable",      `${prelude ?? ""}          ${invocation}(err) => {          // If the bug is present and the callback is called again with an error,          // don't throw another error, so if the subprocess fails we know it had the correct behaviour.          if (!err) throw new Error("success");        });`,    ],    stderr: "piped",  });  const { stderr, success } = await p.output();  const error = new TextDecoder().decode(stderr);  await cleanup?.();  assert(!success);  assertStringIncludes(error, "Error: success");}