public function testSetAuthenticationFailed()
{
$request = $this->getMock('\\Magento\\Framework\\App\\Request\\Http', array(), array(), '', false);
$cookieMock = $this->getMock('Magento\\Framework\\Stdlib\\Cookie', array(), array(), '', false);
$contextMock = $this->getMock('Magento\\Framework\\App\\Http\\Context', array(), array(), '', false);
$response = new \Magento\Framework\App\Response\Http($cookieMock, $contextMock);
$authentication = new \Magento\Framework\HTTP\Authentication($request, $response);
$realm = uniqid();
$response->headersSentThrowsException = false;
$authentication->setAuthenticationFailed($realm);
$headers = $response->getHeaders();
$this->assertArrayHasKey(0, $headers);
$this->assertEquals('401 Unauthorized', $headers[0]['value']);
$this->assertArrayHasKey(1, $headers);
$this->assertContains('realm="' . $realm . '"', $headers[1]['value']);
$this->assertContains('401', $response->getBody());
}
