Lcobucci\JWT\Token::hasHeader PHP Method

    public function hasHeader(string $name) : bool
    {
        return array_key_exists($name, $this->headers);
    }

 /**
  * @test
  *
  * @uses Lcobucci\JWT\Token::__construct
  *
  * @covers Lcobucci\JWT\Token::hasHeader
  */
 public function hasHeaderMustReturnFalseWhenItIsNotConfigured()
 {
     $token = new Token(['test' => 'testing']);
     $this->assertFalse($token->hasHeader('testing'));
 }