test_readline_question_prompt.cjs
No OneTemporary
Actions

Size

2 KB

Referenced Files

None

Subscribers

None

test_readline_question_prompt.cjs
View Options

	const { spawnSync } = require('child_process');
	const fs = require('fs');
	const path = require('path');

	function fail(message) {
	throw new Error(message);
	}

	function resolveExecutable(execPath) {
	if (path.isAbsolute(execPath)) return execPath;

	const localPath = path.resolve(execPath);
	if (fs.existsSync(localPath)) return localPath;

	for (const dir of (process.env.PATH \|\| '').split(path.delimiter)) {
	if (!dir) continue;
	const candidate = path.join(dir, execPath);
	if (fs.existsSync(candidate)) return candidate;
	}

	return execPath;
	}

	function runInPty() {
	const helper = path.join(__dirname, 'fixtures', 'readline_question_prompt_child.cjs');
	const script = `
	import os, select, signal, sys, time

	exec_path, helper = sys.argv[1], sys.argv[2]
	pid, master = os.forkpty()

	if pid == 0:
	os.execv(exec_path, [exec_path, helper])

	buf = bytearray()
	sent = False
	exit_code = None
	deadline = time.time() + 7.0

	while time.time() < deadline:
	done, status = os.waitpid(pid, os.WNOHANG)
	if done == pid:
	exit_code = os.waitstatus_to_exitcode(status)
	break

	r, _, _ = select.select([master], [], [], 0.1)
	if master not in r:
	continue

	try:
	chunk = os.read(master, 4096)
	except OSError:
	break

	if not chunk:
	break

	buf.extend(chunk)
	if (not sent) and b'Q: ' in buf:
	os.write(master, b'ab\\x7fc\\r')
	sent = True

	if exit_code is None:
	os.kill(pid, signal.SIGKILL)
	_, status = os.waitpid(pid, 0)
	exit_code = os.waitstatus_to_exitcode(status)

	while True:
	r, _, _ = select.select([master], [], [], 0.05)
	if master not in r:
	break
	try:
	chunk = os.read(master, 4096)
	except OSError:
	break
	if not chunk:
	break
	buf.extend(chunk)

	sys.stdout.buffer.write(bytes(buf))
	sys.exit(exit_code)
	`;

	if (process.platform === 'win32') {
	console.log('skipping readline question prompt tty test on win32');
	process.exit(0);
	}

	return spawnSync('python3', ['-c', script, resolveExecutable(process.execPath), helper], {
	encoding: 'utf8',
	timeout: 9000,
	});
	}

	const result = runInPty();

	if (result.error && result.error.code === 'ENOENT') {
	console.log('skipping readline question prompt tty test because `python3` is unavailable');
	process.exit(0);
	}

	if (result.error) throw result.error;

	const output = `${result.stdout \|\| ''}${result.stderr \|\| ''}`;

	if (result.status !== 0) {
	fail(`child exited ${result.status}\n${output}`);
	}

	if (!output.includes('Q: ')) {
	fail(`expected question prompt in output\n${output}`);
	}

	if (!output.includes('ANSWER "ac"')) {
	fail(`expected edited answer to round-trip\n${output}`);
	}

	if (output.includes('> ')) {
	fail(`default interface prompt leaked into question redraw\n${output}`);
	}

	console.log('readline question keeps the active prompt during redraw');

File Metadata

Mime Type: application/javascript
Expires: Sat, May 2, 3:45 PM (2 d)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 544302
Default Alt Text: test_readline_question_prompt.cjs (2 KB)

Event Timeline