paseo/packages/server/src/utils/spawn.test.ts

import { mkdtempSync, realpathSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import path from "node:path";
import { afterEach, describe, expect, test } from "vitest";

import { execCommand } from "./spawn.js";

describe("execCommand", () => {
  const tempDirs: string[] = [];

  afterEach(() => {
    for (const tempDir of tempDirs) {
      rmSync(tempDir, { recursive: true, force: true });
    }
    tempDirs.length = 0;
  });

  test("returns stdout and stderr for a successful command", async () => {
    const result = await execCommand("echo", ["hello"]);

    expect(result.stdout.trim()).toBe("hello");
    expect(result.stderr).toBe("");
  });

  test("rejects when the command times out", async () => {
    const command =
      process.platform === "win32"
        ? {
            command: process.execPath,
            args: ["-e", "setTimeout(() => {}, 10_000)"],
          }
        : { command: "sleep", args: ["10"] };

    await expect(execCommand(command.command, command.args, { timeout: 100 })).rejects.toThrow();
  });

  test("runs the command in the provided cwd", async () => {
    const cwd = realpathSync(mkdtempSync(path.join(tmpdir(), "spawn-test-")));
    tempDirs.push(cwd);

    const command =
      process.platform === "win32"
        ? {
            command: process.execPath,
            args: ["-e", "console.log(process.cwd())"],
          }
        : { command: "pwd", args: [] };

    const result = await execCommand(command.command, command.args, { cwd });

    expect(result.stdout.trim()).toBe(cwd);
    expect(result.stderr).toBe("");
  });
});