public function testSuccess()
{
$issuerClaim = $this->getMockBuilder('Emarref\\Jwt\\Claim\\Issuer')->getMock();
$issuerClaim->expects($this->once())->method('getValue')->will($this->returnValue('an_issuer'));
$this->token->expects($this->once())->method('getPayload')->will($this->returnValue($this->payload));
$this->payload->expects($this->once())->method('findClaimByName')->with(Claim\Issuer::NAME)->will($this->returnValue($issuerClaim));
$verifier = new IssuerVerifier('an_issuer');
$verifier->verify($this->token);
}