public function testNamespaces()
{
$this->converter->addNamespace('http://www.example.com', 'some\\php\\ns');
$namespaces = \PHPUnit_Framework_Assert::readAttribute($this->converter, 'namespaces');
$this->assertArrayHasKey('http://www.example.com', $namespaces);
$this->assertEquals('some\\php\\ns', $namespaces['http://www.example.com']);
}