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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('interface map', function (t) {
	var obj = { a: [5, 6, 7], b: { c: [8] } };

	t.same(
		traverse.paths(obj)
			.sort()
			.map(function (path) { return path.join('/'); })
			.slice(1)
			.join(' ')
		,
		'a a/0 a/1 a/2 b b/c b/c/0'
	);

	t.same(
		traverse.nodes(obj),
		[
			{ a: [5, 6, 7], b: { c: [8] } },
			[5, 6, 7], 5, 6, 7,
			{ c: [8] }, [8], 8,
		]
	);

	t.same(
		traverse.map(obj, function (node) {
			if (typeof node === 'number') {
				return node + 1000;
			}
			if (Array.isArray(node)) {
				return node.join(' ');
			}
			return void undefined;
		}),
		{ a: '5 6 7', b: { c: '8' } }
	);

	var nodes = 0;
	traverse.forEach(obj, function () { nodes += 1; });
	t.equal(nodes, 8);

	t.end();
});