public function testJsonSerialize() { $attendeeObject = new Attendee($this->responseArray); $attendeeJson = $attendeeObject->jsonSerialize(); $this->assertArrayHasKey('firstName', $attendeeJson); $this->assertArrayHasKey('lastName', $attendeeJson); $this->assertArrayHasKey('email', $attendeeJson); $this->assertArrayHasKey('groupName', $attendeeJson); }