morluto
949966712e
Tag physical read outcomes at the owning boundary and preserve opaque caller cancellation reasons through JSON pipelines and reference imports. Share named bounded-read options across consumers and retain failed cleanup ownership for retry. Closes #5686
41 lines
1.2 KiB
TypeScript
41 lines
1.2 KiB
TypeScript
import { open, type FileHandle } from "node:fs/promises";
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import { vi } from "vitest";
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type PositionalFileRead = (
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this: FileHandle,
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...args: [Buffer, number, number, number | null]
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) => Promise<{ readonly bytesRead: number; readonly buffer: Buffer }>;
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/** Fail one selected descriptor read after aborting with an independently chosen reason. */
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export const failFileReadAfterAbort = async (
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path: string,
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controller: AbortController,
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abortReason: unknown,
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physicalCause: unknown,
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): Promise<void> => {
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const probe = await open(path, "r");
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const identity = await probe.stat();
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const prototype = Object.getPrototypeOf(probe) as {
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read: PositionalFileRead;
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};
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await probe.close();
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const originalRead = prototype.read;
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let failed = false;
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vi.spyOn(prototype, "read").mockImplementation(async function (
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this: FileHandle,
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...args: [Buffer, number, number, number | null]
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) {
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const current = await this.stat();
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if (
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!failed &&
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current.dev === identity.dev &&
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current.ino === identity.ino
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) {
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failed = true;
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controller.abort(abortReason);
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throw physicalCause;
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}
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return originalRead.call(this, ...args);
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});
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};
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