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traverse and transform objects by visiting every node on a recursive walk

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'use strict';

var test = require('tape');
var traverse = require('../');

test('json test', function (t) {
	var id = 54;
	var callbacks = {};
	var obj = { moo: function () {}, foo: [2, 3, 4, function () {}] };

	var scrubbed = traverse(obj).map(function (x) {
		if (typeof x === 'function') {
			callbacks[id] = { id: id, f: x, path: this.path };
			this.update('[Function]');
			id += 1;
		}
	});

	t.equal(
		scrubbed.moo,
		'[Function]',
		'obj.moo replaced with "[Function]"'
	);

	t.equal(
		scrubbed.foo[3],
		'[Function]',
		'obj.foo[3] replaced with "[Function]"'
	);

	t.same(scrubbed, {
		moo: '[Function]',
		foo: [2, 3, 4, '[Function]'],
	}, 'Full JSON string matches');

	t.same(
		typeof obj.moo,
		'function',
		'Original obj.moo still a function'
	);

	t.same(
		typeof obj.foo[3],
		'function',
		'Original obj.foo[3] still a function'
	);

	t.same(callbacks, {
		54: { id: 54, f: obj.moo, path: ['moo'] },
		55: { id: 55, f: obj.foo[3], path: ['foo', '3'] },
	}, 'Check the generated callbacks list');

	t.end();
});