/**
     * Check Symfony\Yaml bug
     *
     * @test
     */
    public function canParseNumericMap()
    {
        $yaml = <<<YAML
map:
  1: one
  2: two
YAML;
        $actual = Yaml::parse($yaml, true, true, true);
        $this->assertInternalType('object', $actual);
        $this->assertInternalType('object', $actual->map);
        $this->assertTrue(property_exists($actual->map, '1'));
        $this->assertTrue(property_exists($actual->map, '2'));
        $this->assertSame('one', $actual->map->{'1'});
        $this->assertSame('two', $actual->map->{'2'});
    }