@Test
public void testDropStream() throws Exception {

    streamOperationsService.createStream(StreamsHelper.STREAM_NAME, StreamsHelper.COLUMNS);
    assertTrue(streamOperationsService.streamExist(StreamsHelper.STREAM_NAME));
    String queryId= streamOperationsService.addQuery(StreamsHelper.STREAM_NAME, StreamsHelper.QUERY);
    streamOperationsService.dropStream(StreamsHelper.STREAM_NAME);
    assertFalse("Expected false not found", streamOperationsService.streamExist(StreamsHelper.STREAM_NAME));
}