// Covers TUI launch argument and environment construction.

import type { ChildProcess, SpawnOptions } from "node:child_process";

import { EventEmitter } from "node:events";

import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

import { afterEach, beforeEach, describe, expect, it, type MockInstance, vi } from "vitest";

const spawnMock = vi.hoisted(() => vi.fn());

const detachMock = vi.hoisted(() => vi.fn());

let pauseSpy: MockInstance;

let resumeSpy: MockInstance;

vi.mock("node:child_process", () => ({

spawn: spawnMock,

process.execArgv.length = 0;

spawnMock.mockReset();

detachMock.mockReset();

vi.spyOn(process.stdin, "pause").mockImplementation(() => process.stdin);

vi.spyOn(process.stdin, "resume").mockImplementation(() => process.stdin);

pauseSpy = vi.spyOn(process.stdin, "pause").mockImplementation(() => process.stdin);

resumeSpy = vi.spyOn(process.stdin, "resume").mockImplementation(() => process.stdin);

vi.spyOn(process.stdin, "isPaused").mockReturnValue(false);

});

expect(options.stdio).toBe("inherit");

});

it("keeps parent stdin paused after the relaunched TUI exits", async () => {

const child = createChildProcess();

spawnMock.mockImplementation((_cmd: string, _args: string[], _opts: SpawnOptions) => {

queueMicrotask(() => child.emit("exit", 0, null));

return child;

});

await launchTuiCli({ deliver: false });

expect(pauseSpy).toHaveBeenCalledOnce();

expect(resumeSpy).not.toHaveBeenCalled();

});

it("launches compiled CLI shapes without repeating the current command", async () => {

process.argv[1] = "setup";

const child = createChildProcess();