### Question:
App { public static void main(String[] args) { var data1 = new Data(1, "data1", Data.DataType.TYPE_1); var data2 = new Data(2, "data2", Data.DataType.TYPE_2); var data3 = new Data(3, "data3", Data.DataType.TYPE_3); var data4 = new Data(4, "data4", Data.DataType.TYPE_1); var shard1 = new Shard(1); var shard2 = new Shard(2); var shard3 = new Shard(3); var manager = new LookupShardManager(); manager.addNewShard(shard1); manager.addNewShard(shard2); manager.addNewShard(shard3); manager.storeData(data1); manager.storeData(data2); manager.storeData(data3); manager.storeData(data4); shard1.clearData(); shard2.clearData(); shard3.clearData(); var rangeShardManager = new RangeShardManager(); rangeShardManager.addNewShard(shard1); rangeShardManager.addNewShard(shard2); rangeShardManager.addNewShard(shard3); rangeShardManager.storeData(data1); rangeShardManager.storeData(data2); rangeShardManager.storeData(data3); rangeShardManager.storeData(data4); shard1.clearData(); shard2.clearData(); shard3.clearData(); var hashShardManager = new HashShardManager(); hashShardManager.addNewShard(shard1); hashShardManager.addNewShard(shard2); hashShardManager.addNewShard(shard3); hashShardManager.storeData(data1); hashShardManager.storeData(data2); hashShardManager.storeData(data3); hashShardManager.storeData(data4); shard1.clearData(); shard2.clearData(); shard3.clearData(); }  static void main(String[] args);  }### Answer:
@Test public void shouldExecuteWithoutException() { assertDoesNotThrow(() -> App.main(new String[]{})); }