public function testRandomToken()
 {
     $tokenProvider = new TokenProvider();
     $initialToken = $tokenProvider->getToken();
     $this->assertNotEmpty($initialToken);
     $this->assertSame($initialToken, $tokenProvider->getToken());
     $tokenProvider->generate();
     $this->assertNotSame($initialToken, $tokenProvider->getToken());
 }
 /**
  * Return process identifier token
  *
  * @return string
  */
 protected function getProcessIdentifier()
 {
     return $this->tokenProvider->getToken();
 }