test_console_inspect_string_internals.cjs
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test_console_inspect_string_internals.cjs
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	const { spawnSync } = require('child_process');

	function assert(condition, message) {
	if (!condition) throw new Error(message);
	}

	function run(source) {
	const result = spawnSync(process.execPath, ['-e', source], { encoding: 'utf8' });
	if (result.error) throw result.error;
	assert(
	result.status === 0,
	`expected console.inspect probe to exit 0, got ${result.status}\nstdout:\n${result.stdout}\nstderr:\n${result.stderr}`
	);
	return result.stdout;
	}

	const flat = run('console.inspect("hello world")');
	assert(flat.includes('<String flat '), `expected flat string internals, got ${JSON.stringify(flat)}`);
	assert(/value=0x[0-9a-f]+/.test(flat), `expected raw value bits, got ${JSON.stringify(flat)}`);
	assert(/data=0x[0-9a-f]+/.test(flat), `expected raw data bits, got ${JSON.stringify(flat)}`);
	assert(/ptr=0x[0-9a-f]+/.test(flat), `expected flat string pointer, got ${JSON.stringify(flat)}`);
	assert(flat.includes('len=11'), `expected flat string length, got ${JSON.stringify(flat)}`);
	assert(flat.includes('ascii=yes'), `expected ASCII state, got ${JSON.stringify(flat)}`);
	assert(flat.includes('bytes="hello world"'), `expected byte preview, got ${JSON.stringify(flat)}`);

	const rope = run('console.inspect("a" + "b")');
	assert(rope.includes('<String rope '), `expected rope string internals, got ${JSON.stringify(rope)}`);
	assert(rope.includes('depth=1'), `expected rope depth, got ${JSON.stringify(rope)}`);
	assert(rope.includes('cached=undefined'), `expected untouched rope cache, got ${JSON.stringify(rope)}`);
	assert(rope.includes('left: <String flat '), `expected left flat leaf, got ${JSON.stringify(rope)}`);
	assert(rope.includes('right: <String flat '), `expected right flat leaf, got ${JSON.stringify(rope)}`);

	console.log('console.inspect string internals ok');

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