public function testResetHeaders()
{
$client = new Client();
$client->setHeader('X-Test', 'test');
$reflectionProperty = new \ReflectionProperty('Goutte\\Client', 'headers');
$reflectionProperty->setAccessible(true);
$this->assertEquals(array('X-Test' => 'test'), $reflectionProperty->getValue($client));
$client->resetHeaders();
$this->assertEquals([], $reflectionProperty->getValue($client));
}