public function testGetHeader()
 {
     $request = new Request($this->container, array(), array(), array(), array(), array());
     $this->assertEmpty($request->getHeader('X-Forwarded-For'));
     $request = new Request($this->container, array('HTTP_X_FORWARDED_FOR' => 'test'), array(), array(), array(), array());
     $this->assertEquals('test', $request->getHeader('X-Forwarded-For'));
 }