### Question:
BigQueryPlugin implements Plugin { @Override public Iterable<ConnectorFactory> getConnectorFactories() { return ImmutableList.of(new BigQueryConnectorFactory()); }  @Override Iterable<ConnectorFactory> getConnectorFactories();  }### Answer:
@Test public void testStartup() { BigQueryPlugin plugin = new BigQueryPlugin(); ConnectorFactory factory = getOnlyElement(plugin.getConnectorFactories()); assertInstanceOf(factory, BigQueryConnectorFactory.class); }