/**
  * @covers ::event
  */
 public function testEvent()
 {
     $client = new Client('aaaaa', 'bbbbb');
     $event = $client->event('foo');
     $this->assertInstanceOf('MaartenStaa\\GameAnalytics\\Message', $event);
     $this->assertSame($client, $event->getClient());
     $this->assertStringEndsWith('aaaaa/events', $event->getEndpoint());
     $this->assertEquals(['category' => 'foo'], $event->getPayload());
 }