public function testGetContactsModifiedSince()
 {
     $curlResponse = CurlResponse::create(JsonLoader::getContactsModifiedSinceJson(), array('modified_since' => '2013-01-12T20:04:59.436Z', 'limit' => 2));
     $this->restClient->expects($this->once())->method('get')->with()->will($this->returnValue($curlResponse));
     $response = $this->contactService->getContacts('access_token', array('limit' => 2));
     $this->assertInstanceOf("Ctct\\Components\\ResultSet", $response);
     $contact = $response->results[0];
     $this->assertEquals('c3RhcnRBdD0yMjQmbGltaXQ9Mg', $response->next);
     $this->assertEquals('1', $contact->id);
     $this->assertEquals('John', $contact->first_name);
     $this->assertEquals('Doe', $contact->last_name);
     $this->assertEquals('6', $response->results[1]->id);
     $this->assertEquals('ACTIVE', $response->results[1]->status);
 }