import { spawn } from "node:child_process";

import { expect, test } from "vite-plus/test";

import { isNotFound } from "./errors.ts";
import { exitCode } from "./child.ts";

test("reports the exit code", async () => {
  expect(await exitCode(spawn("/bin/sh", ["-c", "exit 0"], { stdio: "ignore" }))).toBe(0);
  expect(await exitCode(spawn("/bin/sh", ["-c", "exit 3"], { stdio: "ignore" }))).toBe(3);
});

test("reports a signal as 128 plus its number", async () => {
  const child = spawn("/bin/sh", ["-c", "kill -KILL $$"], { stdio: "ignore" });
  expect(await exitCode(child)).toBe(137);
});

test("resolves on exit while a grandchild still holds the output open", async () => {
  const child = spawn("/bin/sh", ["-c", "sleep 2 & exit 5"], { stdio: ["ignore", "pipe", "pipe"] });
  const started = Date.now();
  expect(await exitCode(child)).toBe(5);
  expect(Date.now() - started).toBeLessThan(1500);
  child.stdout.destroy();
  child.stderr.destroy();
});

test("rejects when the command does not exist", async () => {
  const child = spawn("/nonexistent/command", [], { stdio: "ignore" });
  const code = exitCode(child);
  // The rejection must stay unhandled-safe until it is awaited.
  await new Promise((resolve) => {
    setTimeout(resolve, 50);
  });
  await expect(code).rejects.toSatisfy(isNotFound);
});