public function testGetUsername()
 {
     // easy path
     $paths = array('identifier' => 'id');
     $this->responseObject->setPaths($paths);
     $this->responseObject->setResponse(json_encode(array('id' => 666)));
     $this->assertEquals(666, $this->responseObject->getUsername());
 }
 public function testGetUsernameWithoutResponseReturnsNull()
 {
     $this->responseObject->setPaths(array('identifier' => 'id'));
     $this->assertNull($this->responseObject->getUsername());
 }