content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
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  package com.datastax.oss.driver.api.core.paging;
  
  import static com.datastax.oss.driver.Assertions.assertThat;
  
  import com.datastax.oss.driver.api.core.paging.OffsetPager.Page;
  import com.datastax.oss.driver.internal.core.MockAsyncPagingIterable;
  import com.datastax.oss.driver.internal.core.util.concurrent.CompletableFutures;
  import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableList;
  import com.tngtech.java.junit.dataprovider.UseDataProvider;
  import java.util.concurrent.CompletionStage;
  import org.junit.Test;
  
  public class OffsetPagerAsyncTest extends OffsetPagerTestBase {
  
    @Override
    protected Page<String> getActualPage(
        OffsetPager pager, OffsetPagerTestFixture fixture, int fetchSize) {
      CompletionStage<Page<String>> pageFuture =
          pager.getPage(fixture.getAsyncIterable(fetchSize), fixture.getRequestedPage());
      return CompletableFutures.getCompleted(pageFuture);
    }
  
    /**
     * Covers the corner case where the server sends back an empty frame at the end of the result set.
     */
    @Test
    @UseDataProvider("fetchSizes")
    public void should_return_last_page_when_result_finishes_with_empty_frame(int fetchSize) {
      MockAsyncPagingIterable<String> iterable =
          new MockAsyncPagingIterable<>(ImmutableList.of("a", "b", "c"), fetchSize, true);
      OffsetPager pager = new OffsetPager(3);
      Page<String> page = CompletableFutures.getCompleted(pager.getPage(iterable, 1));
  
      assertThat(page.getElements()).containsExactly("a", "b", "c");
      assertThat(page.getPageNumber()).isEqualTo(1);
      assertThat(page.isLast()).isTrue();
    }
  }
  