code: @Test public void assertNew(){
    ShardingContexts shardingContexts=ShardingContextsBuilder.getMultipleShardingContexts();
    ShardingContext actual=new ShardingContext(shardingContexts,1);
    assertThat(actual.getJobName(),is(shardingContexts.getJobName()));
    assertThat(actual.getTaskId(),is(shardingContexts.getTaskId()));
    assertThat(actual.getShardingTotalCount(),is(shardingContexts.getShardingTotalCount()));
    assertThat(actual.getJobParameter(),is(shardingContexts.getJobParameter()));
    assertThat(actual.getShardingItem(),is(1));
    assertThat(actual.getShardingParameter(),is(shardingContexts.getShardingItemParameters().get(1)));
  }
  